Composite deck plate

Abstract

To provide a composite type deck plate allowing a beautiful ceiling surface to be formed by making the ceiling surface have an attractive design (ornamental design) with a woody base (natural material).SOLUTION: A composite type deck plate 10A is formed using a woody base 16 of a specific area, deck plates 15a to 15c with first to third bars arranged above the woody base 16 and aligned in a width direction. Metal bases 17 of the deck plates 15a to 15c with the first to third bars are fixed on an upper surface 37 of the woody base 16 with a plurality of staples 39 in a state of being aligned in a width direction between first and second side edge parts 33 and 34 of the woody base 16.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a composite deck plate of a given area having side edges and end edges. [Background technology]

[0002] Patent Document 1 discloses a deck plate comprising a steel plate (metal base) of a predetermined area having both side edges extending in the length direction and both end edges extending in the width direction, a plurality of reinforcing bar truss structures installed on the top surface of the steel plate and extending in the length direction, and a plurality of width reinforcement bars located on the top surface of the steel plate and extending in the width direction and arranged at a predetermined distance apart in the length direction. The steel plate has a plurality of ridges extending in the length direction, projecting upward from its top surface. The reinforcing bar truss is formed from upper end reinforcement bars located between a pair of ridges arranged in the width direction and above the top surface of the steel plate, a pair of lower end reinforcement bars located between the pair of ridges and between the steel plate and the upper end reinforcement bars and extending in the length direction, and a pair of lattice reinforcement bars extending in the length direction, repeatedly bending up and down in a wavy pattern, between the pair of ridges and between the steel plate and the upper end reinforcement bars.

[0003] The lattice reinforcement has an upper convex portion that bends convexly in contact with the upper reinforcing bars, and a lower concave portion that bends concavely in contact with the upper surface of the metal base, and flares outward in the width direction from the upper convex portion to the lower concave portion. In the deck plate, the upper convex portions of the lattice reinforcement are spot welded to the upper reinforcing bars, the middle portions of the lattice reinforcement are spot welded to the lower reinforcing bars, and the width reinforcement is spot welded to a convex strip formed on the steel plate and positioned in the lower concave portion of the lattice reinforcement, with the lower concave portion of the lattice reinforcement being sandwiched between the upper surface of the steel plate and the width reinforcement. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-163914 Summary of the Invention [Problem to be solved by the invention]

[0005] The deck plate disclosed in Patent Document 1 has the underside of the steel plate (metal base) exposed downwards, so when using the deck plate to construct a ceiling slab for a reinforced concrete building, reinforced concrete building, or reinforced steel-framed concrete building, the underside of the steel plate (metal base) cannot be used as the ceiling surface as is; instead, multiple suspension bolts must be installed on the deck plate and ceiling finishing materials such as decorative plywood, gypsum board, and aluminum panels must be attached to the suspension bolts, requiring additional ceiling finishing work which is time-consuming and costly.

[0006] Furthermore, the deck plate disclosed in Patent Document 1 cannot provide a ceiling surface with the attractive design (design) of a wood-based base (wood (wood-based plate), plywood (wood-based plate), wood-based siding material (wood-based plate), CLT (wood-based plate)), and therefore cannot create a ceiling surface that gives viewers the beauty, comfort, warmth, and peace of mind that a wood-based base (natural material) has. Wood and plywood, among wood materials, reveal designs such as different grains, colors, and textures created by nature depending on the cutting direction and part of the tree, which have the effect of calming and soothing the viewer's mood, and can create a comfortable ceiling surface. Wood siding material, among wood-based plates, has a high design quality, can give viewers the warmth of wood, and the finished image can be varied in various ways depending on the color. Among the wood-based panels, CLT has the same design features as wood and plywood, such as grain, color, and texture, and can create a comfortable ceiling surface.It is also highly strong and has excellent insulation, earthquake resistance, soundproofing, and fire resistance.

[0007] An object of the present invention is to provide a composite deck plate that can display the attractive design of a wood-based base (natural material) on the ceiling surface, creating a visually appealing ceiling surface that also conveys the beauty, comfort, warmth, and tranquility of the wood-based base to those who see it. Another object of the present invention is to provide a composite deck plate that can be used to construct a ceiling slab using hanging bolts without attaching ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels, thereby eliminating the need for ceiling finishing work. Another object of the present invention is to provide a composite deck plate that can be used to construct a ceiling slab that is free from the risk of falling even when shaking (vibrations) caused by earthquakes or the like occurs, preventing the occurrence of ceiling collapse accidents. [Means for solving the problem]

[0008] The present invention, which aims to solve the above-mentioned problems, is based on a composite deck plate of a predetermined area having both side edge portions extending in the length direction and both end edge portions extending in the width direction intersecting the length direction.

[0009] The features of the present invention based on the above premise are as follows: The composite deck plate is formed from a wooden base of a predetermined area having both side edges extending in the length direction and both end edges extending in the width direction, and first to nth reinforced deck plates of predetermined areas arranged above the wooden base and aligned in the width direction, the first to nth reinforced deck plates each comprising a metal base of a predetermined area having first and second edge portions extending in the width direction and spaced apart from each other in the length direction, and a central portion located between the first and second edge portions, and at least one reinforcement structure arranged on and fixed to the upper surface of the metal base and extending in the length direction between the first and second edge portions of the metal base, The wood base is formed from first to nth wood plates that extend in the length direction parallel to the reinforced structure and are aligned in the width direction, and the metal bases of the first to nth reinforced deck plates are fixed to the top surfaces of the first to nth wood plates aligned in the width direction by a predetermined fixing means. .

[0010] In one example of the present invention, the metal bases of the first to nth reinforced deck plates have a first side edge extending in the longitudinal direction and a second side edge located opposite the first side edge and extending in the longitudinal direction, and in the composite deck plate, the first and second side edges of the metal bases of adjacent reinforced deck plates in the width direction are spaced apart in the width direction, and the wood base is exposed between the first and second side edges of the metal bases of adjacent reinforced deck plates in the width direction, and at one side edge of the composite deck plate, one side edge of the wood base extends outward in the width direction from the first side edge of the metal base of the reinforced deck plate, and at the other side edge of the composite deck plate, the other side edge of the wood base extends outward in the width direction from the second side edge of the metal base of the reinforced deck plate.

[0011] In another example of the present invention, the metal bases of the first to nth reinforced deck plates have a first side edge portion that is located widthwise outside the reinforced structure and extends lengthwise, and a second side edge portion that is opposite the first side edge and is located widthwise outside the reinforced structure and extends lengthwise, and in the composite deck plate, the metal bases of adjacent reinforced deck plates are lined up widthwise with a portion of the first side edge portion and a portion of the second side edge portion overlapping.

[0012] In another example of the present invention, the metal bases of the first to nth reinforced deck plates have a first side edge extending in the lengthwise direction and a second side edge located opposite the first side edge and extending in the lengthwise direction, and in the composite deck plate, the metal bases of adjacent reinforced deck plates in the widthwise direction are lined up in the widthwise direction with the first side edge and the second side edge of the metal bases abutting each other.

[0013] In another example of the present invention, a first side edge and a second side edge of a metal base are formed into a wood-based base by a plurality of fastening means positioned on the side edges and arranged intermittently in the length direction. 1st~nth It is fixed to the top surface of a wooden plate.

[0014] Another example of the present invention is a staple in which the fixing means includes a shoulder portion having a predetermined shoulder width and a pair of legs having a predetermined leg length, and the staples are arranged intermittently at a predetermined distance apart in the length direction on a first side edge portion and a second side edge portion of a metal base with the shoulder portion extending in the width direction, and the legs penetrate the metal base. 1st~nth It is hammered into the inside of a wood plate.

[0015] In another example of the present invention, the number of staples driven in the central periphery of the central part of the metal base is greater than the number of staples driven in the remaining central part excluding the central periphery of the metal base, and the spacing dimension of the staples in the length direction around the central part of the metal base is smaller than the spacing dimension of the staples in the length direction in the remaining central part, and the staples with shoulders extending in the width direction are densely packed. 1st~nth It is hammered into the inside of a wood plate.

[0016] In another example of the present invention, a plurality of staples with shoulder portions extending in the width direction are arranged at predetermined intervals in the width direction around the center of the central portion of the metal base. 1st~nth It is hammered into the inside of a wood plate.

[0017] Another example of the present invention is a method for manufacturing a stapler having a shoulder portion extending in a width direction, in which the number of staples driven in the first and second end edges of the metal base is greater than the number of staples driven in the remaining first and second end edges excluding the end edges of the metal base, and the spacing between the staples in the length direction around the first and second end edges of the metal base is smaller than the spacing between the staples in the length direction around the first and second end edges. 1st~nth It is hammered into the inside of a wood plate.

[0018] In another example of the present invention, a plurality of staples with shoulders extending in the width direction are arranged at predetermined intervals in the width direction around the first and second edge portions of the metal base. 1st~nth It is hammered into the inside of a wood plate.

[0019] Another example of the present invention is a staple in which the fixing means includes a shoulder portion having a predetermined shoulder width and a pair of legs having a predetermined leg length, and the staples are arranged intermittently at a predetermined distance in the length direction on a first side edge portion and a second side edge portion of a metal base with the shoulders extending in the length direction, and the legs penetrate the metal base. 1st~nth It is hammered into the inside of a wood plate.

[0020] In another example of the present invention, the number of staples driven in the central periphery of the central part of the metal base is greater than the number of staples driven in the remaining central part excluding the central periphery of the metal base, and the spacing dimension of the staples in the length direction around the central part of the metal base is smaller than the spacing dimension of the staples in the length direction in the remaining central part, and the staples with shoulders extending in the length direction are densely packed. 1st~nth It is hammered into the inside of a wood plate.

[0021] In another example of the present invention, a plurality of staples with shoulder portions extending in the length direction are arranged at predetermined intervals in the width direction around the center of the central portion of the metal base. 1st~nth It is hammered into the inside of a wood plate.

[0022] Another example of the present invention is a method for manufacturing a stapler having a first and second end edge portion of a metal base, the number of staples driven in the first and second end edge portions of the metal base being greater than the number of staples driven in the remaining first and second end edge portions excluding the end edge portions of the metal base, and the spacing dimension of the staples in the length direction around the first and second end edge portions of the metal base being smaller than the spacing dimension of the staples in the length direction around the first and second end edge portions, and the staples having shoulder portions extending in the length direction are densely packed. 1st~nth It is hammered into the inside of a wood plate.

[0023] In another example of the present invention, a plurality of staples with shoulders extending in the length direction are arranged at predetermined intervals in the width direction around the first and second edge portions of the metal base. 1st~nth It is hammered into the interior of the wood plate.

[0024] In another embodiment of the present invention, the staples are coated with adhesive.

[0025] In another example of the present invention, the metal base is an iron plate, 1st~nth The wood-based plate is any one of a specified area of ​​wood, a specified area of ​​plywood, a specified area of ​​wood-based siding material, a specified area of ​​CLT, a specified area of ​​oriented strand board (OSB plywood), a specified area of ​​wood cement board, a specified area of ​​particle board, and a specified area of ​​medium density fiberboard (MDF). [Effects of the Invention]

[0026] According to the composite deck plate of the present invention, the metal bases of the first through nth reinforcement deck plates are fixed to the upper surface of the wooden base by a predetermined fixing means in a state where they are aligned widthwise between both side edges of the wooden base, and the wooden base is exposed below the composite deck plate to form the ceiling surface of the building. This allows the attractive design of the wooden base to be displayed on the ceiling surface, creating a spectacular ceiling surface and a ceiling surface that conveys the beauty, comfort, warmth, and peace of mind of the natural wooden base to viewers. Because the composite deck plate forms the ceiling surface by fixing the wooden base to the underside of the metal base of the reinforcement deck plate, a ceiling slab can be constructed using hanging bolts without attaching ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels. This eliminates the need for separate ceiling finishing work and reduces the effort and cost required for ceiling finishing work. Composite deck plates do not require the use of suspension bolts to attach ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels, so compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, ceiling finishing work can be omitted, and ceiling slabs can be constructed efficiently.In addition, even if shaking (vibration) occurs due to earthquakes, etc., there is no risk of the slab falling, and it is possible to construct a ceiling slab that can prevent ceiling collapse accidents.Composite deck plates use a wood base, which is a sustainable and recyclable resource, making it possible to make effective use of forest resources and reducing CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0027] A composite deck plate has a wood base extending lengthwise in parallel with the reinforcement structure and formed from first to nth wood plates aligned widthwise, and the metal base of the first to nth rebar trussed deck plate is fixed by a predetermined fixing means to the upper surfaces of the first to nth wood plates aligned widthwise. The metal base of the first to nth reinforced deck plate is fixed by a predetermined fixing means to the upper surfaces of the first to nth wood plates extending lengthwise, and the first to nth wood plates are exposed below the composite deck plate to form the ceiling surface of the building. This allows the attractive design of the first to nth wood plates extending lengthwise to be displayed on the ceiling surface, creating a ceiling surface that provides viewers with the beauty, comfort, warmth, and tranquility of the first to nth wood plates, which are natural materials. The composite deck plate uses the first to nth wood plates, a sustainable and recyclable resource, making effective use of forest resources and reducing CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0028] A composite deck plate has a wood base extending in the width direction intersecting the reinforcement structure and formed from first to nth wood plates arranged in the length direction, and the metal bases of the first to nth rebar trussed deck plates are fixed by a predetermined fixing means to the upper surfaces of the lengthwise arranged first to nth wood plates. By fixing the metal bases of the first to nth reinforcement deck plates to the upper surfaces of the widthwise extending first to nth wood bases by a predetermined fixing means, it is possible to utilize short scrap wood generated in the manufacturing of lumber and reduce wood waste. In the composite deck plate, the widthwise extending first to nth wood bases are exposed below the composite deck plate to form the ceiling surface of the building, allowing the attractive design of the wood plates to be displayed on the ceiling surface, creating a ceiling surface that provides viewers with the beauty, comfort, warmth, and tranquility of the natural wood plates. The composite deck plate uses wood-based plates No. 1 to No. n, which are sustainable and recyclable resources, making it possible to effectively utilize forest resources and reducing CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0029] The first to nth reinforced deck plates have a first side edge extending in the length direction and a second side edge located opposite the first side edge and extending in the length direction, the first side edge and the second side edge of the metal base of those reinforced deck plates adjacent in the width direction are spaced apart in the width direction, the wood base is exposed between the first side edge and the second side edge of the metal base of those reinforced deck plates adjacent in the width direction, and at one side edge of the composite deck plate, one side edge of the wood base extends outward in the width direction from the first side edge of the metal base of the reinforced deck plate, In a composite deck, the other side edge of the wood base extends widthwise outward from the second side edge of the metal base of the reinforced deck. This means that the metal base forming the reinforced deck is not distributed over the entire area of ​​the wood base, reducing the area of ​​the metal base in the composite deck and thereby reducing the amount of metal base used. This reduced amount of metal base allows for inexpensive construction of ceiling slabs and reduces the weight of the composite deck, resulting in a lighter ceiling slab. Because the wood base conceals the metal base and prevents it from being exposed below the composite deck, the wood plate forms the ceiling surface, allowing the attractive design of the wood plate to be displayed on the ceiling surface, creating a ceiling surface that is aesthetically pleasing, comfortable, warm, and relaxing, thanks to the natural wood material.

[0030] In a composite deck plate in which the metal bases of the first to nth reinforced deck plates have a first side edge that is located widthwise outside the reinforced structure and extends lengthwise, and a second side edge that is opposite the first side edge and is located widthwise outside the reinforced structure and extends lengthwise, and the metal bases of adjacent reinforced deck plates are lined up widthwise with a portion of the first side edge overlapping a portion of the second side edge of the metal base.By overlapping a portion of the first side edge and a portion of the second side edge of adjacent metal bases in the widthwise direction, it is possible to easily position the first to nth reinforced deck plates on the wood base (first to nth wood plates), and the metal bases can be accurately fixed to predetermined locations on the top surface of the wood base, making it possible to efficiently produce composite deck plates. In composite deck plates, wood plates are positioned on the underside of the metal bases lined up in the width direction, and the wood plates conceal the metal bases, so that the metal bases are not exposed below the composite deck plate.Instead, the wood plates are exposed below the composite deck plate to form the ceiling surface, so the attractive design of the wood plates can be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and peace of mind that comes from the wood plates, which are natural materials.

[0031] A composite deck plate has a first side edge extending in the length direction of the 1st to nth reinforced deck plates and a second side edge located opposite the first side edge and extending in the length direction, and the metal bases of adjacent reinforced deck plates are lined up in the width direction with the first side edge and second side edge of the metal bases abutting each other.By abutting the first side edge and second side edge of adjacent metal bases in the width direction, the 1st to nth reinforced deck plates can be easily positioned on the wood base (1st to nth wood plates), and the metal bases can be accurately fixed to predetermined locations on the top surface of the wood base, making it possible to efficiently produce composite deck plates. In composite deck plates, wood plates are positioned on the underside of the metal bases lined up in the width direction, and the wood plates conceal the metal bases, so that the metal bases are not exposed below the composite deck plate.Instead, the wood plates are exposed below the composite deck plate to form the ceiling surface, so the attractive design of the wood plates can be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and peace of mind that comes from the wood plates, which are natural materials.

[0032] In a composite deck plate in which the first and second side edges of a metal base are fixed to the upper surface of a wood plate forming a wood base by a plurality of fastening means located at those side edges and arranged intermittently along the length, the wood plate is fixed to the first and second side edges of the metal base by a plurality of fastening means arranged intermittently along the length, so that the metal base and the wood plate can be securely fixed together, and even if shaking (vibration) occurs due to an earthquake or the like, there is no risk of the plate falling, and a ceiling slab can be constructed that can prevent ceiling collapse accidents.The composite deck plate can create an attractive ceiling surface using the wood plate fixed to the underside of the metal base by a plurality of fastening means arranged intermittently along the length, and can create a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0033] In a composite deck plate, the fixing means is a staple having a shoulder with a predetermined shoulder width and a pair of legs with a predetermined leg length, and the staples are arranged intermittently at a predetermined distance in the length direction at the first and second side edges of the metal base with the shoulders extending widthwise, and the legs penetrate the metal base and are driven into the wood plate.Since the wood plate is fixed to the first and second side edges of the metal base by the staples arranged intermittently at a predetermined distance in the length direction at the first and second side edges of the metal base with the shoulders extending widthwise, the metal base and the wood plate can be securely fixed together.This means that even if shaking (vibration) occurs due to an earthquake or the like, there is no risk of the wood plate falling, and a ceiling slab can be constructed that can prevent ceiling collapse accidents. The composite deck plate uses a wood-based plate that is fixed to the underside of a metal base with staples spaced apart intermittently along the length with the shoulders extending widthwise, making it possible to create an attractive ceiling surface with an appealing design, and to create a ceiling surface that gives viewers the beauty, comfort, warmth, and peace of mind that comes from the wood-based plate, which is a natural material.

[0034] A composite deck plate in which the number of staples driven in around the center of the central part of the metal base is greater than the number of staples driven in the remaining central part excluding the central periphery of the metal base, the lengthwise spacing of the staples around the center of the metal base is smaller than the lengthwise spacing of the staples in the remaining central part, and the staples with shoulders extending in the width direction are driven densely into the interior of the wood-based plate, is fixed between the metal base and the wood-based plate by using a large number of staples with shoulders extending in the width direction around the center of the metal base. The wood plates can be firmly connected to the undersides of the sides, and after the composite deck plate is hung over the beams of the building, concrete is poured onto the top surface of the composite deck plate. Even if the load of the concrete acts so that the periphery of the center of the central part of the metal base curves downward, the fixation between the periphery of the center of the central part of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0035] A composite deck plate in which a plurality of staples with shoulders extending in the width direction are driven into the interior of a wood-based plate while being spaced apart in the width direction at a predetermined distance around the center of the central part of a metal base, can be firmly connected to the underside of the central part of the metal base by fixing the wood-based plate to the underside of the central part of the metal base by a plurality of staples that are spaced apart in the length direction and width direction at a predetermined distance with shoulders extending in the width direction, and the composite deck plate can be firmly connected to the underside of the central part of the metal base, and the composite deck plate can be used as a beam of a building. After the deck plate is laid over the metal base, concrete is poured onto the top surface of the composite deck plate, and even if the load of the concrete acts so that the periphery of the center of the central part of the metal base curves downward, the fixation between the periphery of the center of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0036] The composite deck plate has a greater number of staples driven into the edge periphery of the first and second end edges of the metal base than the number of staples driven into the remaining first and second end edges excluding the edge periphery of the metal base, and the lengthwise spacing of the staples around the edge periphery of the first and second end edges of the metal base is smaller than the lengthwise spacing of the staples around the edge periphery of the first and second end edges of the metal base, and the staples with shoulders extending in the width direction are driven densely into the inside of the wood-based plate.The composite deck plate has a greater number of staples driven into the bottom surface of the metal base than the remaining first and second end edges excluding the edge periphery of the metal base, and the staples with shoulders extending in the width direction are driven densely into the inside of the wood-based plate. The wood plate can be firmly connected to the underside of the edges of the first and second edges of the metal base, and even if the composite deck plate is placed over the beams of the building and concrete is poured onto the top surface of the composite deck plate and the load of the concrete acts so that the edges of the first and second edges of the metal base warp upward, the fixation between the edges of the first and second edges of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0037] A composite deck plate in which a plurality of staples with shoulders extending in the width direction are driven into the interior of a wood plate while being spaced apart in the width direction around the edges of the first and second edges of the metal base, can be firmly connected to the underside of the edges of the first and second edges of the metal base by fixing the wood plate to the underside of the edges of the first and second edges of the metal base with a plurality of staples that are spaced apart in the length direction and also spaced apart in the width direction with shoulders extending in the width direction. After the composite deck plate is laid across the beams of the building, concrete is poured onto the top surface of the composite deck plate, and even if the load of the concrete acts so that the edges of the first and second end edges of the metal base are warped upward, the fixation between the edges of the first and second end edges of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0038] In a composite deck plate, the fixing means is a staple having a shoulder with a predetermined shoulder width and a pair of legs with a predetermined leg length, and the staples are arranged intermittently at a predetermined distance in the longitudinal direction at the first and second side edges of the metal base with the shoulders extending longitudinally, and the legs penetrate the metal base and are driven into the wood plate.The wood plate is fixed to the underside of the first and second side edges of the metal base by the staples arranged intermittently at a predetermined distance in the longitudinal direction at the first and second side edges of the metal base with the shoulders extending longitudinally.This means that the wood plate can be securely fixed to the underside of the metal base, and even if shaking (vibration) occurs due to an earthquake or the like, there is no risk of the wood plate falling, making it possible to construct a ceiling slab that can prevent ceiling collapse accidents. The composite deck plate uses a wood-based plate that is fixed to the underside of a metal base with staples spaced apart intermittently along the length with the shoulders extending lengthwise, allowing for the creation of an attractive ceiling surface with an appealing design, and a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural wood-based plate.

[0039] A composite deck plate in which the number of staples driven in around the center of the central part of the metal base is greater than the number of staples driven in the remaining central part excluding the central periphery of the metal base, the lengthwise spacing of the staples around the center of the metal base is smaller than the lengthwise spacing of the staples in the remaining central part, and the staples with shoulders extending in the lengthwise direction are driven densely into the inside of the wood-based plate, is fixed to the underside of the metal base using a large number of staples with shoulders extending in the lengthwise direction around the center of the metal base, and the composite deck plate is formed by fixing the wood-based plate to the underside of the metal base using a large number of staples with shoulders extending in the lengthwise direction around the center of the metal base. A wood plate can be firmly connected to the underside of the central periphery, and after the composite deck plate is hung over the beams of the building, concrete is poured onto the top surface of the composite deck plate. Even if the load of the concrete acts so that the central periphery of the central part of the metal base curves downward, the fixation between the central periphery of the central part of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural wood plate.

[0040] In a composite deck plate in which a plurality of staples with shoulders extending in the length direction are driven into the interior of a wood-based plate while being spaced apart in the width direction at a predetermined distance around the center of the central part of a metal base, the wood-based plate is fixed to the underside of the central part of the metal base by a plurality of staples that are spaced apart intermittently in the length direction at a predetermined distance and also spaced apart in the width direction at a predetermined distance with the shoulders extending in the length direction, thereby firmly connecting the wood-based plate to the underside of the central part of the metal base, and the composite deck plate can be used as a base for a building. After it is laid across the beams, concrete is poured onto the top surface of the composite deck plate, and even if the load of the concrete acts so that the central periphery of the central part of the metal base curves downward, the fixation between the central periphery of the central part of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural wood plate.

[0041] A composite deck plate in which the number of staples driven in around the edges of the first and second edges of the metal base is greater than the number of staples driven in the remaining first and second edges excluding the edge periphery of the metal base, the lengthwise spacing of the staples around the edges of the first and second edges of the metal base is smaller than the lengthwise spacing of the staples around the edges of the first and second edges of the metal base, and the staples with shoulders extending in the lengthwise direction are driven densely into the interior of the wood-based plate, is formed by fixing the wood-based plate to the underside of the metal base using a large number of staples with shoulders extending in the lengthwise direction around the edges of the first and second edges of the metal base. The wood plate can be firmly connected to the underside of the edges of the first and second edges of the base, and after the composite deck plate is hung over the beams of the building, concrete is poured onto the top surface of the composite deck plate. Even if the load of the concrete acts so that the edges of the first and second edges of the metal base warp upward, the fixation between the edges of the first and second edges of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0042] In a composite deck plate in which a plurality of staples with shoulders extending in the length direction are lined up at a predetermined distance apart in the width direction around the edges of the first and second edge portions of the metal base and driven into the interior of the wood-based plate, the wood-based plate can be firmly connected to the underside of the edges of the first and second edge portions of the metal base by fixing the wood-based plate to the underside of the edges of the first and second edge portions of the metal base with a plurality of staples that are lined up intermittently at a predetermined distance apart in the length direction and also lined up at a predetermined distance apart in the width direction with the shoulders extending in the length direction. After the deck plate is hung over the beams of the building, concrete is poured onto the top surface of the composite deck plate, and even if the load of the concrete acts so that the edges of the first and second end edges of the metal base warp upward, the fixation between the edges of the first and second end edges of the metal base and the wood plate will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plate and the wood plate, creating a sturdy ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the wood plate, a natural material.

[0043] In a composite deck plate in which adhesive is applied to the staples, a wood plate is fixed to the underside of a metal base by a plurality of staples to which adhesive is applied, so the wood plate and metal base can be securely fixed using adhesive.Even if shaking (vibration) occurs due to an earthquake or the like, there is no risk of the wood plate falling, and a ceiling slab can be constructed that can prevent ceiling collapse accidents.In addition, by using wood plates fixed to the underside of a metal base by a plurality of staples to which adhesive is applied, it is possible to create an attractive ceiling surface with an attractive design, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and peace of mind that comes from the wood plate, which is a natural material.

[0044] A composite deck plate, in which the metal base is a steel plate and the wood-based plate is any of wood of a specified area, plywood of a specified area, wood-based siding material of a specified area, CLT of a specified area, oriented strand board (OSB plywood) of a specified area, wood cement board of a specified area, particle board of a specified area, and medium-density fiberboard (MDF), can create an attractive ceiling surface that features the attractive designs of wood, plywood, wood-based siding material, CLT, oriented strand board (OSB plywood), wood cement board, particle board, and medium-density fiberboard (MDF), and can create a ceiling surface that gives viewers the beauty, comfort, warmth, and peace of mind of the wood-based plate, which is a natural material. When the wood-based plate is wood, plywood, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF), the different grains, colors, textures, and other designs created by nature depending on the cutting direction and part of the tree appear, which have a calming and soothing effect on those who see the design, creating a comfortable ceiling surface.When the wood-based plate is wood siding material, it is possible to create a ceiling surface with high design potential that gives the viewer the warmth of wood and allows the finished image to be changed in various ways depending on the color.When the wood-based plate is CLT, it is possible to create a ceiling surface with the same design potential as wood and plywood, such as grains, colors, and textures, creating a comfortable ceiling surface, as well as high strength and excellent insulation, earthquake resistance, soundproofing, and fire resistance. [Brief explanation of the drawings]

[0045] [Figure 1] FIG. 1 is a perspective view of an example composite deck plate. [Figure 2] Top view of the composite deck plate in Figure 1. [Figure 3] FIG. 2 is a front view of the composite deck plate of FIG. 1. [Figure 4] FIG. 2 is a side view of the composite deck plate of FIG. 1. [Figure 5] FIG. 10 is a top view showing another example of staple arrangement. [Figure 6]FIG. 10 is a top view showing another example of staple arrangement. [Figure 7] FIG. 10 is a top view showing another example of staple arrangement. [Figure 8] FIG. 10 is a top view showing another example of staple arrangement. [Figure 9] FIG. 10 is a top view showing another example of staple arrangement. [Figure 10] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 11] FIG. 11 is a top view of the composite deck plate of FIG. [Figure 12] FIG. 11 is a front view of the composite deck plate of FIG. [Figure 13] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 14] FIG. 14 is a top view of the composite deck plate of FIG. 13. [Figure 15] FIG. 14 is a front view of the composite deck plate of FIG. 13 . [Figure 16] FIG. 14 is a side view of the composite deck plate 10C of FIG. 13. [Figure 17] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 18] FIG. 18 is a top view of the composite deck plate of FIG. [Figure 19] FIG. 18 is a front view of the composite deck plate of FIG. [Figure 20] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 21] FIG. 21 is a top view of the composite deck plate of FIG. 20. [Figure 22] FIG. 21 is a side view of the composite deck plate of FIG. 20 . [Figure 23] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 24] FIG. 24 is a top view of the composite deck plate of FIG. 23. [Figure 25] FIG. 24 is a side view of the composite deck plate of FIG. 23. [Figure 26] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 27] FIG. 27 is a top view of the composite deck plate of FIG. 26. [Figure 28] FIG. 1 is a perspective view of an example composite deck plate. [Figure 29] FIG. 29 is a top view of the composite deck plate of FIG. 28. [Figure 30] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 31] FIG. 31 is a top view of the composite deck plate of FIG. 30. [Figure 32] FIG. 31 is a front view of the composite deck plate of FIG. 30 . [Figure 33] FIG. 31 is a side view of the composite deck plate of FIG. 30 . [Figure 34] FIG. 10 is a perspective view of a composite deck plate shown as another example. [Figure 35] FIG. 35 is a top view of the composite deck plate of FIG. 34. [Figure 36] FIG. 35 is a front view of the composite deck plate of FIG. 34. [Figure 37] FIG. 35 is a side view of the composite deck plate of FIG. 34. DETAILED DESCRIPTION OF THE INVENTION

[0046] The composite deck plate according to the present invention will be described in detail below with reference to the accompanying drawings, such as Fig. 1, which is a perspective view of a composite deck plate 10A as an example. Fig. 2 is a top view of the composite deck plate 10A of Fig. 1, and Fig. 3 is a front view of the composite deck plate 10A of Fig. 1. Fig. 4 is a side view of the composite deck plate 10A of Fig. 1. In Fig. 1, the length direction (front-rear direction) is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0047] The composite deck plate 10A (including composite deck plates 10B-10J) is used to construct ceiling slabs for steel-framed buildings, reinforced concrete buildings, and reinforced steel-framed concrete buildings by connecting multiple composite deck plates in a widthwise arrangement. The composite deck plate 10A has a first side edge 11 and a second side edge 12 (side edges) that extend longitudinally and are spaced apart in the widthwise direction, and a first end edge 13 and a second end edge 14 (end edges) that extend longitudinally and are spaced apart in the lengthwise direction. The composite deck plate 10A is formed from first to third reinforced deck plates 15a-15c (first to nth reinforced deck plates) (first to nth rebar truss-equipped deck plates) of predetermined area and a wood base 16 (wood plate) of predetermined area.

[0048] In addition, the reinforced deck plate (deck plate with reinforcing bar trusses) that forms the composite deck plate 10A (including composite deck plates 10B to 10J) of the present invention can be any of the various reinforced deck plates (deck plates with reinforcing bar trusses) currently in use, in addition to those shown in Figures 1, 26, and 30, and can also be any form of reinforced deck plate (deck plate with reinforcing bar trusses) that will be developed in the future.

[0049] There is no limit to the number of reinforced deck plates (deck plates with reinforcing bar trusses), and the number of reinforced deck plates can be freely determined depending on the size of the ceiling slab to be constructed, the required strength, the amount of reinforcing bar required, etc., and composite deck plate 10A (including composite deck plates 10B to 10J) may be formed by one first reinforced deck plate, two first and second reinforced deck plates (deck plates with first and second reinforcing bar trusses), or four or more first to nth reinforced deck plates (deck plates with first to nth reinforcing bar trusses).

[0050] The first to third reinforced deck plates 15a to 15c are arranged parallel to each other in the width direction and are placed above a wooden base 16. The first to third reinforced deck plates 15a to 15c are formed from a metal base 17 having a predetermined area and extending in the length direction, and a reinforcing bar truss unit 19 (reinforced structure) placed and fixed (installed) on the top surface 18 of the metal base 17. In the reinforced deck plate of composite deck plate 10A (including composite deck plates 10B to 10J), one reinforcing bar truss unit 19 (reinforced structure) is installed on the upper surface 18 of one metal base 17, but there is no limit to the number of reinforcing bar truss units 19, and the number of reinforcing bar truss units 19 to be installed on the upper surface 18 of the metal base 17 can be freely determined depending on the size of the ceiling slab to be constructed, the strength required of the ceiling slab, the amount of reinforcing bar required for the ceiling slab, etc., and two or more reinforcing bar truss units 19 may be arranged and fixed (installed) on the upper surface 18 of one metal base 17.

[0051] The metal base 17 is made of a steel plate having a thickness of 2 to 4 mm. However, the metal base 17 may also be made of other metals such as galvanized steel, aluminum, stainless steel, or titanium. The metal base 17 has a first edge portion 20 and a second edge portion 21 extending widthwise and spaced apart in the longitudinal direction, a central portion 22 located between the first and second edge portions 20 and 21, a first side edge portion 23 extending lengthwise, and a second side edge portion 24 located opposite the first side edge portion 23 and extending lengthwise. The metal base 17 also has a substantially flat upper surface 18 and a substantially flat lower surface 25. The upper and lower surfaces 18 and 25 of the metal base 17 are plated. The area of ​​the metal base 17 is not particularly limited and can be freely determined depending on the size of the ceiling slab to be constructed, the strength required for the ceiling slab, the amount of reinforcing steel required for the ceiling slab, and other factors.

[0052] The reinforcing bar truss unit 19 (reinforced concrete structure) is disposed between the first and second side edges 23, 24 of the metal base 17, and extends longitudinally from the first end edge 20 to the second end edge 21. The reinforcing bar truss unit 19 is made (assembled) of one upper end bar 26, two (a pair) first and second lower end bars 27a, 27b, and two (a pair) first and second lattice bars 28a, 28b.

[0053] The upper end bars 26 are made from elongated iron bars. Deformed iron bars (deformed reinforcing bars) with multiple nodes (ribs) on their circumferential surfaces are used for the upper end bars 26. The upper end bars 26 are located between the first and second side edges 23, 24 of the metal base 17, in the center of the metal base 17 in the width direction, and extend linearly in the length direction, spaced apart upward from the top surface 18 of the metal base 17. The lengthwise dimension of the upper end bars 26 of each reinforcing bar truss unit 19 is approximately the same, and the upper end bars 26 of each reinforcing bar truss unit 19 are aligned parallel to each other in the width direction.

[0054] The first and second bottom reinforcement bars 27a, 27b are made from elongated iron rods. The bottom reinforcement bars 27a, 27b are made from deformed metal rods (deformed reinforcing bars) with multiple nodes (ribs) on their circumferential surfaces. The bottom reinforcement bars 27a, 27b are located between the first and second side edge portions 23, 24 of the metal base 17, below the top reinforcement bars 26, and on both sides of the top reinforcement bars 26 in the width direction. The first bottom reinforcement bars 27a are located on the widthwise outer side of the first lattice reinforcement bars 28a, and the second bottom reinforcement bars 27b are located on the widthwise outer side of the second lattice reinforcement bars 28b. The first and second bottom reinforcement bars 27a, 27b extend linearly in the length direction, spaced a predetermined distance upward from the top surface 18 of the metal base 17. The length dimensions of the first and second bottom end bars 27a, 27b of each reinforcing bar truss unit 19 in the longitudinal direction are approximately the same, and the bottom end bars 27a, 27b of each reinforcing bar truss unit 19 are arranged parallel to each other in the width direction.

[0055] The first and second lattice reinforcement bars 28a, 28b are made from elongated iron rods. The lattice reinforcement bars 28a, 28b are located between the first and second side edge portions 23, 24 of the metal base 17, and also between the upper surface 18 of the metal base 17 and the upper end reinforcement bars 26. The first and second lattice reinforcement bars 28a, 28b extend in the longitudinal direction, repeatedly bending (undulating) in an undulating manner in the vertical direction between the upper surface 18 of the metal base 17 and the upper end reinforcement bars 26. The lattice reinforcement bars 28a, 28b have an upper end convex portion 29 located on the upper end reinforcement bars 26 side and arching upward, a lower end concave portion 30 located on the upper surface 18 of the metal base 17 side, and an intermediate portion 31 extending at an angle in the longitudinal direction between the upper end convex portion 29 and the lower end concave portion 30.

[0056] 1 and 3, the first and second lattice reinforcement members 28a, 28b are not perpendicular to the upper surface 18 of the metal base 17, but are inclined at a predetermined angle to the upper surface 18 of the metal base 17, and flare outward in the width direction from the upper end convex portion 29 to the lower end concave portion 30. There are no particular restrictions on the inclination angle of these lattice reinforcement members 28a, 28b to the metal base 17, and the inclination angle can be freely changed.

[0057] The angle at which the first and second lattice reinforcement members 28a, 28b repeatedly bend in a wave-like manner in the vertical direction is constant, and the number of times the lattice reinforcement members 28a, 28b repeatedly bend in a wave-like manner in the vertical direction per unit length (e.g., 1 m) is the same. The angle at which the lattice reinforcement members 28a, 28b repeatedly bend in a wave-like manner in the vertical direction (the number of times the lattice reinforcement members 28a, 28b repeatedly bend in a wave-like manner in the vertical direction per unit length) can be freely changed, and by adjusting this angle (adjusting the number of times the lattice reinforcement members 28a, 28b repeatedly bend in a wave-like manner in the vertical direction per unit length), the vertical distance between the upper convex portions 29 of the lattice reinforcement members 28a, 28b can be adjusted, and the vertical distance between the lower concave portions 30 of the lattice reinforcement members 28a, 28b can be adjusted.

[0058] The first and second lattice reinforcement members 28a, 28b are arranged symmetrically in the width direction with the upper end reinforcement members 26 sandwiched between them. Therefore, the positions of the upper end convex portions 29 of the lattice reinforcement members 28a, 28b aligned in the width direction are aligned, the positions of the middle portions 31 are aligned, and the positions of the lower end concave portions 30 are aligned. The first and second lattice reinforcement members 28a, 28b have the same spacing between adjacent upper end convex portions 29 in the length direction, so that the upper end convex portions 29 are aligned at equal intervals in the length direction, and the spacing between adjacent lower end concave portions 30 in the length direction is the same, so that the lower end concave portions 30 are aligned at equal intervals in the length direction.

[0059] The upper end convex portions 29 of the first and second lattice reinforcement bars 28a, 28b are in contact with both widthwise sides (peripheral surfaces) of the upper end reinforcement bars 26, and the portions of the upper end convex portions 29 that intersect with the upper end reinforcement bars 26 (intersection portions) are welded (fixed) to the upper end reinforcement bars 26 by spot welding. The middle portions 31 of the lattice reinforcement bars 28a, 28b are located inside the lower end reinforcement bars 27a, 27b, and the portions of the middle portions 31 that intersect with the lower end reinforcement bars 27a, 27b (intersection portions) are welded (fixed) to the lower end reinforcement bars 27a, 27b by spot welding.

[0060] The lower end recesses 30 of the first and second lattice reinforcement bars 28a, 28b are bent outward in the width direction so as to be parallel to the upper surface 18 of the metal base 17, forming an arc that is convex outward in the width direction. The lower end recesses 30 are formed with bent portions 32 that extend outward in the width direction. The bent portions 32 of the lower end recesses 30 are located on the upper surface 18 of the metal base 17 and abut against the upper surface 18, and a portion of them (for example, the tip portion (one point) of the bent portion 32 or both side portions (two points) of the bent portion 32) is welded (fixed) to the metal base 17 by spot welding. Note that the lower end recesses 30 of the first and second lattice reinforcement bars 28a, 28b do not necessarily have to be bent outward in the width direction, and the bent portions 32 do not have to be formed in the lower end recesses 30. In this case, the lower end recesses 30 of the lattice bars 28a, 28b abut against the upper surface 18 of the metal base 17, and the intersection points (intersection portions) of the lower end recesses 30 abutting against the upper surface 18 of the metal base 17 are welded (fixed) to the metal base 17 by spot welding.

[0061] There are no particular restrictions on the thickness of the upper end reinforcement 26, the first and second lower end reinforcement 27a, 27b, and the first and second lattice reinforcement 28a, 28b, and the thickness of the upper end reinforcement 26, the lower end reinforcement 27a, 27b, and the lattice reinforcement 28a, 28b can be freely changed depending on the size of the ceiling slab to be constructed, the strength required of the ceiling slab, the amount of rebar required for the ceiling slab, etc. The upper end reinforcement 26, the first and second lower end reinforcement 27a, 27b, and the first and second lattice reinforcement 28a, 28b are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 26, the lower end reinforcement 27a, 27b, and the lattice reinforcement 28a, 28b are made of iron, they may be treated with an anti-rust treatment such as plating.

[0062] The metal base 17 (including the metal base 17 of the composite deck plates 10B-10J) may have a plurality of protrusions (ridges) extending upward from its upper surface 18. These protrusions (ridges) are located between the first and second edge portions 20, 21 of the metal base 17, spaced equally (at a predetermined interval) in the width direction, and extend longitudinally from one edge portion 20 to the other edge portion 21. These protrusions can be formed by bending a portion of the metal base 17 inward in the width direction and then making a mountain fold on a portion of the metal base 17 upward from its upper surface 18. These protrusions have a vertical height of 3 to 10 mm and a circular arc-shaped front view. The protrusions may have a front view like a plate extending linearly in the vertical direction, or an inverted V-shape.

[0063] When multiple protrusions (ridges) are formed on the metal base 17, the bent portions 32 of the lower end recesses 30 of the first and second lattice reinforcement bars 28a, 28b are positioned on the protrusions of the metal base 17, with portions of the bent portions protruding outward in the width direction from the protrusions and intersecting with the protrusions at two points (two locations). The locations of the bent portions 32 that intersect with the protrusions (intersections (two points)) are welded (fixed) to the protrusions by spot welding. When the lower end recesses 30 of the lattice reinforcement bars 28a, 28b are not bent outward in the width direction and no bent portions 32 are formed in the lower end recesses 30, the lower end recesses 30 of the lattice reinforcement bars 28a, 28b intersect and abut one location on the protrusions of the metal base 17, and the intersection location (intersection (one point)) of the lower end recesses 30 that intersect with one location on the protrusions is welded (fixed) to the protrusions by spot welding.

[0064] The wood base 16 (wood plate) is a single plate having first and second side edge portions 33, 34 (both side edge portions) that extend in the lengthwise direction and are spaced apart opposite each other in the widthwise direction, and first and second end edge portions 35, 36 (both end edge portions) that extend in the widthwise direction and are spaced apart opposite each other in the lengthwise direction, and has a substantially flat upper surface 37 and a substantially flat lower surface 38. The wood base 16 (wood plate) is made of any of the following: wood of a specified area extending approximately evenly in the length and width directions; plywood of a specified area extending approximately evenly in the length and width directions; wood siding material of a specified area extending approximately evenly in the length and width directions; CLT (Cross Laminated Timber) of a specified area extending approximately evenly in the length and width directions; oriented strand board (OSB plywood) of a specified area extending approximately evenly in the length and width directions; wood cement board of a specified area extending approximately evenly in the length and width directions; particle board of a specified area extending approximately evenly in the length and width directions; and medium density fiberboard (MDF) of a specified area extending approximately evenly in the length and width directions.

[0065] The wood used is either a variety of coniferous wood with different patterns of grain (decorative surface) and thickness dimensions, or a variety of hardwood wood with different patterns of grain (decorative surface) and thickness dimensions. The thickness of the wood ranges from 10 mm to 300 mm. Examples of wood include Japanese hackberry (Celtis sinensis), etimoye, Eviara, Elm, Sophora japonica (Sophora somnifera), Okume, Obangkol, Olive, Curly maple, Kaizuka-ibuki (Kazukai), Maple, Persimmon, Kago-noki (Kagonoki), Katsura (Katsura), Kanaryum (Canaryum), Birch (Betula vacua), Kapole (Kaya), Japanese larch (Larix leptolepis), Carantus, Karin (Quercus quinqueradiata), and Garo-garo (Garo-garo). , calophyllum, xoketone, Kiso cypress (Kiso hinoki), yellow jasmine (Kohada), ascetic cedar (Gyojasugi), paulownia (Kiri), quilted maple, camphor (Kusu), cloud cedar (Kumosugi), Claro walnut, chestnut (Kuri), walnut (Kurumi), black Ezo pine (Kuro-ezo-tsutsu), black persimmon (Kuro-gaki), black pine (Kuromatsu), mulberry (Morus), and zelkova (Zelkova).

[0066] Or, kempas, genpo pear, coffee nut, broadleaf cedar, ebony, black lotus, koshiabura, kosipo, cottonwood, small oak, magnolia, Japanese yew, honey locust, sassafras, southern cypress, sapele, sawagurumi, sawashiba , Sawara, Shii, Shiuri, Jelutong, Shioji, Sycamore, Schizomelia, Rosewood, Hornbeam, Shina, Striped Ebony, Jongkon, White Oak, Birch, Jindai Zelkova, Jindai Ash, and Jindai Nara can be used.

[0067] Alternatively, you can use ash, red oak, agathis, red pine, Akita cedar, Asada, asamela, adzuki pear, hinoki cypress, aspen, anigre, apa, apitong, African mahogany, amula, ayous, alder, yellow birch, yellow hardwood, yellow pine, yellow poplar, tussock, itaya, yew, ichii oak, ginkgo, ipe, iroko, willow, wenge, water gum, walnut, plum, ulin, lacquer, and ecop.

[0068] Or, Fuzhou cedar (Fukushusugi), beech (Fagus crenata), bubinga, black ash, sycamore, planchonella, American cedar (Beisugiga), American hemlock (Beihi), American cypress (Beihiba), American cypress leaf (Beihiba), Douglas fir (Douglas fir), red cypress (Benhihi), red pine (Benima matsu), berry, pericopsis, perpock, pencil cedar, magnolia (Hoh), bocote, bose, podocarpus, poplar, hopea, Borneo oak, white ash, white wenge, whitewood, white oak, white spruce, white seraya, white pine, white limba, Honduran mahogany, ponderous The following trees can be used: Rossa pine, birch (makaba), cypress (maki), makore, marupa, mango, mansonia, dogwood (cornus), water-eye (mizume), mulberry tree (zelkova), soapberry (soapberry), mutenie, white birch (birch), metasequoia, melapi, merukusi pine, merusawa, merbau, menkuran, menpisan, moabi, mobingi, fir (momi), maple (momiji), monkeypod, Yakusugi (yakusugi), willow (yanagi), willow cedar (yanagisugi), Yanase cedar (yanasesugi), wild cherry (yamazakura), Yamanashi (yamanashi), mountain bell (yamanarashi), and lily tree (tulip tree).

[0069] In addition, the following trees are also found: Jindai elm, cedar, spruce, cedar, zebrano, selangan batu, cork, sandalwood, sonokeling, soft maple, terminalia, Taiwan cypress, taucan, taung, ironwood, oak, ash, tara, teak, cherry, lettuce, Tibetan cypress, champaca, hemlock, camellia, tea tree, doshie, horse chestnut, linden pine, ash, durian, mud tree, oak, bitterwood, cinnamon, nyatoh, New Guinea Walnut, New Guinea basswood, elm, Japanese cypress, Albizia julibrissin, noble maple, birchera, birdseye maple, hard maple, purpleheart, Pao rose, basswood, wax tree, butternut, hackberry, willow, padauk, bark pine, locust, balsam, alder, pea maple, beech, bigleaf maple, hickory, cypress, hiba, Himekomatsu, bilinga, pinacado, and falcata can be used.

[0070] Additionally, European ash, European oak, European cherry, European fir, European maple, Yoshino cedar (Yoshinosugi), Yong, Lao cedar, Lao cypress, Radiata pine, rubberwood, Lavoie, Lauan, Lignum vitae, Reisugi (Raisugi), lacewood, redwood, red oak, red gum, red seraya, red pine, red meranti, and rosewood can be used.

[0071] Plywood is made from any of the following materials: natural wood veneer, low-pressure melamine veneer, veneered veneer, olefin veneer, polyester veneer, printed veneer, and DAP veneer, which vary in decorative surface pattern, design, color (tone), texture, gloss, thickness, etc. Plywood includes the various types currently in use as well as all types (forms) of plywood that will be developed in the future. Plywood thicknesses range from 10 mm to 200 mm.

[0072] Various types of wood-based siding materials are used, with different patterns and designs of decorative surfaces, colors (hues), textures, gloss, thicknesses, and other shapes. Wood-based siding includes all types (modes) of wood-based siding that are currently in use as well as those that will be developed in the future. Wood-based siding materials have thicknesses ranging from 15 mm to 30 mm. CLT (cross-laminated timber) includes all types (modes) of CLT that are currently in use as well as those that will be developed in the future. CLT has a thickness ranging from 30 mm to 350 mm. Oriented strand board (OSB plywood) includes all types (modes) of oriented strand board that are currently in use as well as those that will be developed in the future. Oriented strand board has a thickness ranging from 10 mm to 50 mm.

[0073] Wood cement boards include either wood wool cement boards or wood chip cement boards. Wood cement boards include all currently used types as well as all types (forms) of wood cement boards developed in the future. The thickness of wood cement boards ranges from 10mm to 150mm. Particle boards include any of bare particle boards, veneer particle boards, and decorative particle boards. Particle boards include all currently used types (forms) as well as all types developed in the future. The thickness of particle boards ranges from 5mm to 50mm. Medium density fiberboard (MDF) includes any of bare MDF, decorative MDF, and structural MDF. Medium density fiberboards include all currently used types as well as all types (forms) of medium density fiberboards developed in the future. The thickness of medium density fiberboards ranges from 5mm to 50mm.

[0074] In the composite deck plate 10A, the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b, which are adjacent in the width direction, extend parallel in the length direction while being spaced apart in the width direction. The top surface 37 of the wood base 16 (wood, plywood, wood-based siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)) is exposed between the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b.

[0075] In the composite deck plate 10A, the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c, which are adjacent in the width direction, extend parallel in the length direction while being spaced apart in the width direction. The top surface 37 of the wood-based base 16 (wood, plywood, wood-based siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)) is exposed between the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15a.

[0076] At the first side edge 11 (one side edge) of the composite deck plate 10A, the first side edge 33 (one side edge) of the wood base 16 extends widthwise outward from the first side edge 23 of the metal base 17 of the first reinforced deck plate 15a, exposing the top surface 37 of the first side edge 33 of the wood base 16. At the second side edge 12 (the other side edge) of the composite deck plate 10A, the second side edge 34 (the other side edge) of the wood base 16 extends widthwise outward from the second side edge 21 of the metal base 17 of the third reinforced deck plate 15c, exposing the top surface 37 of the second side edge 34 of the wood base 16.

[0077] In the composite deck plate 10A, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first to third reinforcement deck plates 15a to 15c (first to nth reinforcement deck plates) overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the wood-based base 16 (wood, plywood, wood-based siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)), and as shown in Figures 1 to 4, the metal base 17 and the wood-based base 16 are connected and fixed together by a plurality of staples 39 (industrial staples) (fixing means) spaced equally apart along the length. Note that the staples 39 may be spaced at different intervals along the length.

[0078] The metal base 17 of the first reinforced deck plate 15a has its first side edge 23 and second side edge 24 connected and fixed to the upper surface 37 of the wood base 16 by a plurality of staples 39, the metal base 17 of the second reinforced deck plate 15b has its first side edge 23 and second side edge 24 connected and fixed to the upper surface 37 of the wood base 16 by a plurality of staples 39, and the metal base 17 of the third reinforced deck plate 15c has its first side edge 23 and second side edge 24 connected and fixed to the upper surface 37 of the wood base 16 by a plurality of staples 39.

[0079] Each staple 39 has a shoulder 40 having a predetermined shoulder width (external width) and a pair of legs 41 having a predetermined leg length (leg length). The shoulder width (external width) of each staple 39 is in the range of 4 mm to 50 mm, and the leg length (leg length) of each leg 41 is in the range of 5 mm to 200 mm. The shoulder width (external width) and leg length (leg length) of each staple 39 are appropriately selected depending on the size and thickness of the metal base 17 and the wood base 16, the bonding strength required to connect the metal base 17 and the wood base 16, and other factors. These staples 39 are adhesive-coated. The adhesive (not shown) is applied to the entire shoulder 40 and leg 41 of each staple 39, or to the entire leg 41 of each staple 39, or to the lower half of each leg 41 of each staple 39.

[0080] The staples 39 are located on the first and second side edges 23, 24 of the metal base 17, and are lined up intermittently at a predetermined distance (equidistantly) apart in the length direction at the first and second side edges 23, 24 of the metal base 17, with their shoulders 40 extending in the width direction. The staples 39 are driven into the wood base 16 from the top surface 37 thereof, with their legs 41 penetrating the metal base 17.

[0081] The staples 39 are driven into the wood base 16 from the top surface 18 of the metal base 17 in the thickness direction of the wood base 16 by a staple gun. When the staples 39 are driven into the wood base 16, the legs 41 of the staples 39 connect the metal base 17 and the wood base 16, and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the wood base 16. The depth to which the legs 41 of the staples 39 are driven from the top surface 37 of the wood base 16 into the interior thereof is at least 50% and less than 98% of the thickness dimension of the wood base 16.

[0082] The composite deck plate 10A (including composite deck plates 10B-10J) can be fastened using adhesive together with the adhesive-backed staples 39, or at least one of adhesive, nails, bolts, and rivets can be used in addition to the adhesive-backed staples 39. When adhesive is used as the fastening means, it is applied to the entire underside 25 of the metal base 17 of the first to third reinforced deck plates 15a-15c. The underside 25 of the metal base 17 of each of the deck plates 15a-15c and the upper surface 37 of the wood base 16 are firmly joined by the adhesive (and the adhesive-backed staples 39). The metal base 17 and the wood base 16 may be fastened (joined) only by adhesive, or fastened (connected) only by nails, bolts, or rivets. Alternatively, the metal base 17 and the wood base 16 may be fastened (connected) by adhesive and nails, adhesive and bolts, or adhesive and rivets.

[0083] One example of using composite deck plates 10A (including composite deck plates 10B-10J) to construct a ceiling slab for a reinforced concrete building, a reinforced steel-framed concrete building, or a reinforced steel-framed concrete building involves lining up multiple composite deck plates 10A widthwise and connecting the first and second side edges 11 and 12 of the deck plates 10A using a predetermined connecting means to form an assembly of deck plates 10A (ceiling surface). Next, the assembly of connected composite deck plates 10A is positioned and fixed between the width beams (not shown) of the reinforced concrete building, the reinforced steel-framed concrete building, or the reinforced steel-framed concrete building. Alternatively, multiple composite deck plates 10A may be sequentially positioned and fixed between the width beams, and the first and second side edges 11 and 12 of the deck plates 10A may be connected using a predetermined connecting means to position and fix multiple composite deck plates 10A between the width beams.

[0084] After the assembly of composite deck plates 10A (assembly of composite deck plates 10B-10J) is fixed between the width beams of the building, formwork (not shown) is erected around the assembly of deck plates 10A, and concrete (not shown) is poured into the formwork with a specified covering dimension from above the reinforcing bar truss units 19 (reinforced concrete structure) toward the top surface 18 of the metal base 17, and the concrete is then cured for a specified period. When the concrete is poured onto the composite deck plate 10A (first to third reinforced concrete deck plates 15a-15c), the metal base 17 and reinforcing bar truss units 19 (reinforced concrete structure) are embedded in the concrete. After the concrete has cured, the formwork is removed to complete the ceiling slab. In the composite deck plate 10A (ceiling slab), the entire underside 25 of the metal base 17 is concealed, while the underside 38 (decorative surface) of the wood-based base 16 (wood, plywood, wood-based siding material, CLT, oriented strand board (OSB plywood), wood cement board, particle board, medium-density fiberboard (MDF)) is exposed downward (inside the building) from the ceiling of the building to form the ceiling surface.

[0085] The composite deck plate 10A is fixed to the upper surface 37 of the wood base 16 with a plurality of staples 39 (predetermined fixing means) in a state where the metal bases 17 of the first to third reinforcement deck plates 15a to 15c (first to nth reinforcement deck plates) are lined up in the width direction between the first and second side edges 33, 34 (side edges) of the wood base 16, and the wood base 16 (wood, plywood, wood siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, medium density fiberboard (MDF)) is exposed below the composite deck plate 10A to form the ceiling surface of the building. This allows the attractive design of the wood base 16 to be displayed on the ceiling surface, creating an attractive ceiling surface that not only offers a beautiful view, but also gives viewers the beauty, comfort, warmth, and serenity of the wood base 16, which is a natural material.

[0086] In composite deck plate 10A, the wood base 16 is fixed to the underside 25 of the metal base 17 of the first to third reinforcement deck plates 15a to 15c to form a ceiling surface. This allows a ceiling slab to be constructed using suspension bolts without attaching ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels. This eliminates the need for separate ceiling finishing work and reduces the effort and cost required for ceiling finishing work. Because composite deck plate 10A does not require the use of suspension bolts to attach ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels, compared to suspended ceiling structures in which ceiling finish materials are attached using suspension bolts, this eliminates the need for ceiling finishing work, allowing for more efficient construction of the ceiling slab. This also eliminates the risk of the ceiling collapsing even in the event of shaking (vibrations) due to earthquakes or other events, making it possible to construct a ceiling slab that is free from the risk of falling and prevents ceiling collapse accidents.

[0087] The composite deck plate 10A uses a wood-based base 16, which is a sustainable and recyclable resource, making it possible to effectively utilize forest resources and reduce CO 2This contributes to reducing the environmental impact. The essential oil components of the wood and CLT in the wood-based base 16 have the effect of suppressing the growth of mold and the proliferation of pathogenic bacteria, and by using the wood or CLT in the wood-based base 16 as the ceiling surface, the growth of mold and the proliferation of pathogenic bacteria in the ceiling can be suppressed. Furthermore, the wood and CLT in the wood-based base 16 have a humidity-regulating effect, absorbing moisture when the humidity in the air is high and releasing moisture when the humidity is low. By using the wood or CLT in the wood-based base 16 as the ceiling surface, humidity is regulated in the ceiling, and the humidity in the room is regulated. Furthermore, the wood and CLT in the wood-based base 16 have the effect of absorbing high, mid, and low frequencies in a balanced manner, mellowing the sound quality, and by using the wood or CLT in the wood-based base 16 as the ceiling surface, the sound in the room can be mellowed.

[0088] Fig. 5 is a top view showing another example of the arrangement of staples 39. In the arrangement of staples 39 (fixing means) shown in the top view of Fig. 5, the staples 39 are arranged intermittently at a predetermined distance in the length direction at the first side edge 23 and the second side edge 24 of the metal base 17 with their shoulders 40 extending in the width direction, and the number of staples 39 driven in around the center of the central portion 22 of the metal base 17 is greater than the number of staples 39 driven in the remaining central portion 22 excluding the central periphery of the metal base 17, and the number of staples 39 driven in around the edges of the first and second edge portions 20, 21 of the metal base 17 is greater than the number of staples 39 driven in the remaining first and second edge portions 20, 21 excluding the edge peripheries of the metal base 17.

[0089] Around the center of the central portion 22 of the metal base 17, the spacing between the staples 39 in the length direction is smaller than the spacing between the staples 39 in the remaining central portion 22, and the staples 39 with shoulders 40 extending in the width direction are closely packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from the top surface 37 thereof. Around the edges of the first and second end edges 20, 21 of the metal base 17, the spacing between the staples 39 in the length direction is smaller than the spacing between the staples 39 in the length direction at the remaining first and second end edges 20, 21, and the staples 39 with shoulders 40 extending in the width direction are closely packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from the top surface 37 thereof.

[0090] In the composite deck plate 10A in which the metal base 17 and the wood base 16 (wood plate) are connected and fixed by staples 39 arranged as shown in FIG. 5 , the metal base 17 and the wood base 16 (wood plate) are fixed using a large number of staples 39 with shoulder portions 40 extending in the width direction around the center of the central portion 22 of the metal base 17, and also using a large number of staples 39 with shoulder portions 40 extending in the width direction around the edges of the first and second edge portions 20, 21 of the metal base 17. This allows the wood base 16 (wood plate) to be firmly connected to the underside 25 around the center of the central portion 22 of the metal base 17, and also allows the wood base 16 (wood plate) to be firmly connected to the underside 25 around the edges of the first and second edge portions 20, 21 of the metal base 17.

[0091] When composite deck plate 10A (including deck plates 10B to 10J when using staples 39 (fixing means) arranged as shown in FIG. 5) in which metal base 17 and wood base 16 (wood plate) are fixed by staples 39 (fixing means) arranged as shown in FIG. 5 is laid across a beam of a building and concrete is poured onto the top surface of composite deck plate 10A, the load of the concrete acts so that the central periphery of central portion 22 of metal base 17 curves downward, and the concrete bends so that the peripheral edges of first and second edge portions 20, 21 of metal base 17 warp upward. Even if a load of this magnitude is applied, the fixation between the central periphery of the central portion 22 of the metal base 17 and the wood base 16 (wood plate) and the fixation between the peripheral edges of the first and second edge portions 20, 21 of the metal base 17 and the wood base 16 (wood plate) will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plates 15a to 15c and the wood base 16 (wood plate), making it possible to create a sturdy ceiling surface that is capable of giving viewers the beauty, comfort, warmth, and tranquility of the wood base 16 (wood plate), which is a natural material.

[0092] Fig. 6 is a top view showing another example of the arrangement of staples 39. In the arrangement of staples 39 (fixing means) shown in the top view of Fig. 6, the staples 39 are arranged intermittently at a predetermined distance in the length direction on the first side edge 23 and the second side edge 24 of the metal base 17 with their shoulders 40 extending in the width direction, and the number of staples 39 driven in around the center of the central portion 22 of the metal base 17 is greater than the number of staples 39 driven in the remaining central portion 22 excluding the central periphery of the metal base 17, and the number of staples 39 driven in around the edges of the first and second edge portions 20, 21 of the metal base 17 is greater than the number of staples 39 driven in the remaining first and second edge portions 20, 21 excluding the edge peripheries of the metal base 17. Furthermore, a plurality of staples 39 with shoulder portions 40 extending in the width direction are lined up at equal intervals (predetermined distances) in the width direction around the center of the central portion 22 of the metal base 17, and a plurality of staples 39 with shoulder portions 40 extending in the width direction are lined up at equal intervals (predetermined distances) in the width direction around the edges of the first and second edge portions 20, 21 of the metal base 17.

[0093] Around the center of the central portion 22 of the metal base 17, the longitudinal spacing of the staples 39 is smaller than the longitudinal spacing of the staples 39 in the remaining central portion 22, and the staples 39 with shoulder portions 40 extending in the width direction are densely packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and at the same time, the multiple staples 39 with shoulder portions 40 extending in the width direction are lined up at a predetermined distance apart in the width direction, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37.

[0094] Around the edges of the first and second end edges 20, 21 of the metal base 17, the longitudinal spacing of the staples 39 is smaller than the longitudinal spacing of the staples 39 at the remaining first and second end edges 20, 21, and the staples 39 with shoulders 40 extending in the width direction are packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and at the same time, the multiple staples 39 with shoulders 40 extending in the width direction are lined up at a predetermined distance apart in the width direction, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and so on.

[0095] In the composite deck plate 10A in which the metal base 17 and the wood base 16 (wood plate) are connected and fixed by the staples 39 arranged as shown in FIG. 6, a large number of staples 39 with shoulder portions 40 extending in the width direction are arranged in the length direction and width direction around the center of the central portion 22 of the metal base 17, and the metal base 17 and the wood base 16 (wood plate) are fixed using these staples. By arranging a large number of staples 39 with shoulder portions 40 extending widthwise in the lengthwise and widthwise directions and using these staples 39 to fix the metal base 17 and the wood base 16 (wood plate), the wood base 16 (wood plate) can be firmly connected to the underside 25 around the center of the central portion 22 of the metal base 17, and the wood base 16 (wood plate) can be firmly connected to the underside 25 around the edges of the first and second edge portions 20, 21 of the metal base 17.

[0096] When composite deck plate 10A (including deck plates 10B to 10J when using staples 39 (fixing means) arranged as shown in FIG. 6) in which metal base 17 and wood base 16 (wood plate) are fixed by staples 39 (fixing means) arranged as shown in FIG. 6 is laid across a beam of a building and concrete is poured onto the top surface of composite deck plate 10A, the load of the concrete acts so that the central periphery of central portion 22 of metal base 17 curves downward, and the concrete bends so that the peripheral edges of first and second edge portions 20, 21 of metal base 17 warp upward. Even if a load of this magnitude is applied, the fixation between the central periphery of the central portion 22 of the metal base 17 and the wood base 16 (wood plate) and the fixation between the peripheral edges of the first and second edge portions 20, 21 of the metal base 17 and the wood base 16 (wood plate) will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plates 15a to 15c and the wood base 16 (wood plate), making it possible to create a sturdy ceiling surface that is capable of giving viewers the beauty, comfort, warmth, and tranquility of the wood base 16 (wood plate), which is a natural material.

[0097] Fig. 7 is a top view showing another example of the arrangement of staples 39. The arrangement of staples 39 (fixing means) shown in the top view of Fig. 7 is such that the staples 39 are located at the first side edge 23 and the second side edge 24 of the metal base 17, and are lined up intermittently at a predetermined distance in the lengthwise direction at the first side edge 23 and the second side edge 24 of the metal base 17 with their shoulders 40 extending in the lengthwise direction. The staples 39 with their shoulders 40 extending in the lengthwise direction have their legs 41 penetrated through the metal base 17 and driven into the wood base 16 from the top surface 37 thereof. When the staple 39 is driven into the wooden base 16, the leg 41 of the staple 39 connects the metal base 17 and the wooden base 16, and the adhesive applied to the entire shoulder 40 and leg 41 of the staple 39, or the entire leg 41 of the staple 39, or the lower half of the leg 41 of the staple 39 firmly bonds the staple 39 to the wooden base 16.

[0098] The composite deck plate 10A (including deck plates 10B to 10J when using staples 39 (fixing means) arranged as shown in FIG. 7) in which the metal base 17 and the wood base 16 (wood plate) are connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 7 is attached to the metal base 17 by the staples 39 arranged intermittently at a predetermined distance in the length direction at the first side edge 23 and the second side edge 24 of the metal base 17 with the shoulders 40 extending in the length direction. Since the wood base 16 is fixed to the underside 25 of the first and second side edges 23, 24 of the metal base 17, the wood base 16 can be securely fixed to the underside 25 of the metal base 17, and by using the wood base 16 fixed to the underside 25 of the metal base 17 with staples 39, a beautiful ceiling surface with an attractive design can be created, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and peace of mind that the wood base 16, which is a natural material, possesses.

[0099] Fig. 8 is a top view showing another example of the arrangement of staples 39. In the arrangement of staples 39 (fixing means) shown in the top view of Fig. 8, the staples 39 are arranged intermittently at a predetermined distance in the length direction on the first side edge 23 and the second side edge 24 of the metal base 17 with their shoulders 40 extending in the length direction, and the number of staples 39 driven in around the center of the central portion 22 of the metal base 17 is greater than the number of staples 39 driven in the remaining central portion 22 excluding the center periphery of the metal base 17, and the number of staples 39 driven in around the edges of the first and second end edges 20, 21 of the metal base 17 is greater than the number of staples 39 driven in the remaining first and second end edges 20, 21 excluding the edge peripheries of the metal base 17.

[0100] Around the center of the central portion 22 of the metal base 17, the spacing between the staples 39 in the longitudinal direction is smaller than the spacing between the staples 39 in the remaining central portion 22, and the staples 39, with their shoulders 40 extending in the longitudinal direction, are closely packed together and their legs 41 penetrate the metal base 17 and are driven into the wood base 16 (wood plate) from the top surface 37 thereof. Around the edges of the first and second end edges 20, 21 of the metal base 17, the spacing between the staples 39 in the longitudinal direction is smaller than the spacing between the staples 39 in the remaining first and second end edges 20, 21, and the staples 39, with their shoulders 40 extending in the longitudinal direction, are closely packed together and their legs 41 penetrate the metal base 17 and are driven into the wood base 16 (wood plate) from the top surface 37 thereof.

[0101] In the composite deck plate 10A in which the metal base 17 and the wood base 16 (wood plate) are connected and fixed by staples 39 arranged as shown in Figure 8, the metal base 17 and the wood base 16 (wood plate) are fixed using a large number of staples 39 with shoulder portions 40 extending in the longitudinal direction around the center of the central portion 22 of the metal base 17, and also using a large number of staples 39 with shoulder portions 40 extending in the longitudinal direction around the edges of the first and second end edges 20, 21 of the metal base 17, thereby firmly connecting the wood base 16 to the underside 25 around the center of the central portion 22 of the metal base 17, and firmly connecting the wood base 16 to the underside 25 around the edges of the first and second end edges 20, 21 of the metal base 17.

[0102] When composite deck plate 10A (including deck plates 10B to 10J when using staples 39 (fixing means) arranged as shown in FIG. 8) in which metal base 17 and wood base 16 (wood plate) are fixed by staples 39 (fixing means) arranged as shown in FIG. 8 is laid across a beam of a building and concrete is poured onto the top surface of composite deck plate 10A, the load of the concrete acts so that the central periphery of central portion 22 of metal base 17 curves downward, and the peripheral edges of first and second edge portions 20, 21 of metal base 17 warp upward. Even if the load of the concrete acts in this way, the fixation between the central periphery of the central portion 22 of the metal base 17 and the wood base 16 (wood plate) and the fixation between the peripheral edges of the first and second edge portions 20, 21 of the metal base 17 and the wood base 16 (wood plate) will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plates 15a to 15c and the wood base 16, making it possible to create a sturdy ceiling surface that can give viewers the beauty, comfort, warmth, and peace of mind that the wood base 16, which is a natural material, possesses.

[0103] Fig. 9 is a top view showing another example of the arrangement of staples 39. In the arrangement of staples 39 (fixing means) shown in the top view of Fig. 9, the staples 39 are arranged intermittently at a predetermined distance in the length direction on the first side edge 23 and the second side edge 24 of the metal base 17 with their shoulders 40 extending in the length direction, and the number of staples 39 driven in around the center of the central portion 22 of the metal base 17 is greater than the number of staples 39 driven in the remaining central portion 22 excluding the center periphery of the metal base 17, and the number of staples 39 driven in around the edges of the first and second end edges 20, 21 of the metal base 17 is greater than the number of staples 39 driven in the remaining first and second end edges 20, 21 excluding the edge peripheries of the metal base 17. Furthermore, a plurality of staples 39 with shoulder portions 40 extending in the length direction are arranged at equal intervals (predetermined distances) in the width direction around the center of the central portion 22 of the metal base 17, and a plurality of staples 39 with shoulder portions 40 extending in the length direction are arranged at equal intervals (predetermined distances) in the width direction around the edges of the first and second edge portions 20, 21 of the metal base 17.

[0104] Around the center of the central portion 22 of the metal base 17, the longitudinal spacing of the staples 39 is smaller than the longitudinal spacing of the staples 39 in the remaining central portion 22, and the staples 39 with shoulder portions 40 extending in the longitudinal direction are packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and at the same time, the multiple staples 39 with shoulder portions 40 extending in the longitudinal direction are lined up at a predetermined distance apart in the width direction, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and at the same time.

[0105] Around the edges of the first and second end edges 20, 21 of the metal base 17, the longitudinal spacing of the staples 39 is smaller than the longitudinal spacing of the staples 39 at the remaining first and second end edges 20, 21, and the staples 39 with shoulders 40 extending in the longitudinal direction are packed together, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and at the same time, the multiple staples 39 with shoulders 40 extending in the longitudinal direction are lined up at a predetermined distance apart in the width direction, with their legs 41 penetrating the metal base 17 and driven into the wood base 16 (wood plate) from its upper surface 37, and so on.

[0106] In the composite deck plate 10A in which the metal base 17 and the wood base 16 (wood plate) are connected and fixed by the staples 39 arranged as shown in FIG. 9, a large number of staples 39 with shoulder portions 40 extending in the length direction are arranged in the length direction and width direction around the center of the central portion 22 of the metal base 17, and the metal base 17 and the wood base 16 (wood plate) are fixed using these staples. By arranging a large number of staples 39 with shoulder portions 40 extending lengthwise in the lengthwise and widthwise directions and using these staples 39 to fix the metal base 17 and the wood base 16 (wood plate), the wood base 16 (wood plate) can be firmly connected to the underside 25 around the center of the central portion 22 of the metal base 17, and the wood base 16 (wood plate) can be firmly connected to the underside 25 around the edges of the first and second edge portions 20, 21 of the metal base 17.

[0107] When composite deck plate 10A (including deck plates 10B to 10J when using staples 39 (fixing means) arranged as shown in FIG. 9) in which metal base 17 and wood base 16 (wood plate) are fixed by staples 39 (fixing means) arranged as shown in FIG. 9 is laid across a beam of a building and concrete is poured onto the top surface of composite deck plate 10A, the load of the concrete acts so that the central periphery of central portion 22 of metal base 17 curves downward, and the concrete bends so that the peripheral edges of first and second edge portions 20, 21 of metal base 17 warp upward. Even if a load of this magnitude is applied, the fixation between the central periphery of the central portion 22 of the metal base 17 and the wood base 16 (wood plate) and the fixation between the peripheral edges of the first and second edge portions 20, 21 of the metal base 17 and the wood base 16 (wood plate) will not be inadvertently released, and a sturdy reinforced concrete ceiling slab can be constructed from the reinforced deck plates 15a to 15c and the wood base 16 (wood plate), making it possible to create a sturdy ceiling surface that is capable of giving viewers the beauty, comfort, warmth, and tranquility of the wood base 16 (wood plate), which is a natural material.

[0108] Figure 10 is a perspective view of a composite deck plate 10B as another example, and Figure 11 is a top view of the composite deck plate 10B of Figure 10. Figure 12 is a front view of the composite deck plate 10B of Figure 10. In Figure 10, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0109] The composite deck plate 10B has first and second side edge portions 11, 12 (both side edge portions) that extend in the lengthwise direction and are spaced apart opposite each other in the widthwise direction, and first and second end edge portions 13, 14 (both end edge portions) that extend in the widthwise direction and are spaced apart opposite each other in the lengthwise direction, and is formed from first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) of predetermined area that extend in the lengthwise direction, and first to third wood-based plates 42a to 42c (wood-based base 16) of predetermined area that extend in the lengthwise direction.

[0110] Furthermore, there is no limit to the number of wood-based plates, and two first and second wood-based plates (wood-based bases 16) may form composite deck plate 10B (including composite deck plates 10C and 10D), or four or more first to nth wood-based plates (wood-based bases 16) may form composite deck plate 10B (including composite deck plates 10C and 10D).

[0111] The first to third reinforced deck plates 15a to 15c are arranged above the first to third wood plates 42a to 42c (wood base 16) and are aligned parallel to each other in the width direction. The first to third reinforced deck plates 15a to 15c are formed from a metal base 17 of a predetermined area that is long in the length direction, and a reinforcing bar truss unit 19 (reinforced structure) that is arranged and fixed (installed) on the top surface 18 of the metal base 17. The metal base 17 and reinforcing bar truss unit 19 are the same as those of the composite deck plate 10A.

[0112] The first to third wood-based plates 42a to 42c (wood-based base 16) have first and second side edges 33, 34 (both side edges) that extend in the lengthwise direction and are spaced apart from each other in the widthwise direction, and first and second end edges 35, 36 (both end edges) that extend in the widthwise direction and are spaced apart from each other in the lengthwise direction, and have a substantially flat upper surface 37 and a substantially flat lower surface 38. The first to third wood-based plates 42a to 42c are the same shape and size, and are formed into a rectangular shape that is long in the lengthwise direction. The first to third wood-based plates 42a to 42c have the same length dimensions in the lengthwise direction and the same length dimensions in the widthwise direction, and are lined up in the widthwise direction to form the wood-based base 16 with a predetermined area.

[0113] The first to third wood-based plates 42a to 42c (wood-based base 16) are made of any of the following materials already described in the description of the composite deck plate 10A: wood with a specified area, plywood with a specified area, wood-based siding material with a specified area, CLT (Cross Laminated Timber) with a specified area, oriented strand board (OSB plywood) with a specified area, wood cement board with a specified area, particle board with a specified area, and medium-density fiberboard (MDF) with a specified area.

[0114] A first upper joint 43a extending in the longitudinal direction is formed on the second side edge 34 of the first wood-based plate 42a. The first upper joint 43a is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge 34 of the first wood-based plate 42a from the lower surface 38 toward the upper surface 37 of the plate 42a. A first lower joint 44a extending in the longitudinal direction is formed on the first side edge 33 of the second wood-based plate 42b. The first lower joint 44a is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge 33 of the plate 42b from the upper surface 37 toward the lower surface 38 of the second wood-based plate 42b.

[0115] A second upper joint 43b extending in the longitudinal direction is formed on the second side edge 34 of the second wood-based plate 42b. The second upper joint 43b is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge 34 of the second wood-based plate 42b from the lower surface 38 toward the upper surface 37 of the plate 42b. A second lower joint 44b extending in the longitudinal direction is formed on the first side edge 33 of the third wood-based plate 42c. The second lower joint 44b is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge 33 of the third wood-based plate 42c from the upper surface 37 toward the lower surface 38 of the plate 42c.

[0116] In the wood-based base 16, the second wood-based plate 42b is located laterally in the width direction of the first wood-based plate 42a, and the third wood-based plate 42c is located laterally in the width direction of the second wood-based plate 42b. The first to third wood-based plates 42a to 42c are arranged such that the first lower joint portion 44a of the second wood-based plate 42b is located directly below the first upper joint portion 43a of the first wood-based plate 42a, and the first upper joint portion 43a of the first wood-based plate 42a and the first lower joint portion 44a of the second wood-based plate 42b are joined and connected to each other with an adhesive (predetermined fixing means) in a state where they are overlapped in the vertical direction. The second lower joint part 44b of the third wood-based plate 42c is located directly below the second upper joint part 43b of the second wood-based plate 42b, and the second upper joint part 43b of the second wood-based plate 42b and the second lower joint part 44b of the third wood-based plate 42c are joined and connected to each other with an adhesive (predetermined fixing means) in a state where they are overlapped in the vertical direction. Note that the joint parts 43a, 43b, 44a, 44b may also be connected and fixed to each other with staples 39, nails, rivets, fixing bolts, or other fixing means.

[0117] In the composite deck plate 10B, a first longitudinally extending reinforced deck plate 15a is placed on a first longitudinally extending wood-based plate 42a, a second longitudinally extending reinforced deck plate 15b is placed on a second longitudinally extending wood-based plate 42b, and a third longitudinally extending reinforced deck plate 15c is placed on a third longitudinally extending wood-based plate 42c.

[0118] In the composite deck plate 10B, the second side edge 25 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 24 of the metal base 17 of the second reinforced deck plate 15b, which are adjacent in the width direction, extend parallel in the length direction while being spaced apart and facing each other in the width direction. Between the second side edge 25 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 24 of the metal base 17 of the second reinforced deck plate 15b, the top surface 37 of the second side edge 34 of the first wood-based plate 42a (wood, plywood, wood-based siding material, CLT, oriented strand board (OSB plywood), wood cement board, particle board, medium density fiberboard (MDF)) and the top surface 37 of the first side edge 33 of the second wood-based plate 42b (wood, plywood, wood-based siding material, CLT, oriented strand board (OSB plywood), wood cement board, particle board, medium density fiberboard (MDF)) are exposed.

[0119] In the composite deck plate 10B, the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c, which are adjacent in the width direction, extend parallel in the length direction while being spaced apart in the width direction. Between the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c, the top surface 37 of the second side edge 34 of the second wood-based plate 42b and the top surface 37 of the first side edge 33 of the third wood-based plate 42c (wood, plywood, wood-based siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)) are exposed.

[0120] At the first side edge 11 (one side edge) of the composite deck plate 10B, the first side edge 33 (one side edge) of the first wood plate 42a extends widthwise outward from the first side edge 23 of the metal base 17 of the first reinforced deck plate 15a, exposing the top surface 37 of the first side edge 33 of the first wood plate 42a. At the second side edge 12 (the other side edge) of the composite deck plate 10B, the second side edge 34 (the other side edge) of the third wood plate 42c extends widthwise outward from the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c, exposing the top surface 37 of the second side edge 34 of the third wood plate 42c.

[0121] In the composite deck plate 10B, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the second wood-based plate 42b, and the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the third wood-based plate 42c, and as shown in Figures 10 to 12, the metal base 17 and the first wood-based plate 42a are connected and fixed by a plurality of staples 39 (fixing means) arranged at equal intervals along the length. It should be noted that the staples 39 may be spaced apart at different intervals along the length.

[0122] The metal base 17 of the first reinforced deck plate 15a has its first side edge 23 and second side edge 24 fixed to the top surface 37 of the first wood plate 42a by a plurality of staples 39, the metal base 17 of the second reinforced deck plate 15b has its first side edge 23 and second side edge 24 fixed to the top surface 37 of the second wood plate 42b by a plurality of staples 39, and the metal base 17 of the third reinforced deck plate 15c has its first side edge 23 and second side edge 24 fixed to the top surface 37 of the third wood plate 42c by a plurality of staples 39.

[0123] The staples 39 are located on the first and second side edges 23, 24 of the metal base 17 of the first to third reinforced deck plates 15a to 15c, and are lined up intermittently at a predetermined distance in the length direction at the first and second side edges 23, 24 of the metal base 17, with their shoulders 40 extending in the width direction. The staples 39 have their legs 41 penetrating the metal base 17 and driven into the first to third wood plates 42a to 42c from their upper surfaces 37. When the staple 39 is driven into the first to third wood plates 42a to 42c, the leg 41 of the staple 39 connects the metal base 17 to the first to third wood plates 42a to 42c (wood base), and the adhesive applied to the entire shoulder 40 and leg 41 of the staple 39, or the entire leg 41 of the staple 39, or the lower half of the leg 41 of the staple 39 firmly bonds the staple 39 to the first to third wood plates 42a to 42c (wood base 16).

[0124] In the composite deck plate 10B (including composite deck plates 10C and 10D), the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 5, or the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 6, or the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 7. In the composite deck plate 10B (including composite deck plates 10C and 10D), the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed together by staples 39 arranged as shown in FIG. 8, or the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed together by staples 39 arranged as shown in FIG. 9.

[0125] The composite deck plate 10B has the following effects in addition to the effects of the composite deck plate 10A. The composite deck plate 10B has the metal bases 17 of the first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) fixed to the upper surfaces 37 of the first to third wood plates 42a to 42c (first to nth wood plates) (wood base 16) extending in the longitudinal direction using a plurality of staples 39 (predetermined fixing means), and the first to third wood plates 42a to 42c are exposed below the composite deck plate 10B to form the ceiling surface of the building.This allows the attractive designs of the first to third wood plates 42a to 42c extending in the longitudinal direction to be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural materials of the first to third wood plates 42a to 42c. The composite deck plate 10B uses first to third wood-based plates 42a to 42c (first to nth wood-based plates) (wood-based base 16), which are sustainable and recyclable resources, and can effectively utilize forest resources and reduce CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0126] Fig. 13 is a perspective view of a composite deck plate 10C showing another example, and Fig. 14 is a top view of the composite deck plate 10C of Fig. 13. Fig. 15 is a front view of the composite deck plate 10C of Fig. 13, and Fig. 16 is a side view of the composite deck plate 10C of Fig. 13. In Fig. 13, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0127] The composite deck plate 10C shown in Figures 13 to 16 differs from the composite deck plate 10B of Figures 10 to 12 in that fixing bolts 54 or fixing screws 54 are used as the fixing means rather than staples 39.The other configurations are the same as those of the composite deck plate 10B of Figures 10 to 12, so the detailed description of the composite deck plate 10C will be omitted by quoting the description of the composite deck plate 10B of Figures 10 to 12 and assigning the same symbols as in Figures 10 to 12.

[0128] The composite deck plate 10C has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that also extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through third wood plates 42a-42c (wood base 16) that also extend lengthwise and have a predetermined area. The first through third wood plates 42a-42c that form the wood base 16 are the same as those of the composite deck plate 10B. In the composite deck plate 10C, a first reinforced deck plate 15a is placed on top of a first wood-based plate 42a, a second reinforced deck plate 15b is placed on top of a second wood-based plate 42b, and a third reinforced deck plate 15c is placed on top of a third wood-based plate 42c.

[0129] In the composite deck plate 10C, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a and the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are connected and fixed to the upper surface 37 of the first wood-based plate 42a by a plurality of fixing bolts 54 or fixing screws 54 arranged at equal intervals along the length, and the lower surface 25 of the metal base 17 is fixed (bonded) to the upper surface 37 of the first wood-based plate 42a by an adhesive (not shown) applied to the entire lower surface 25 of the metal base 17 or partially (intermittently) to the lower surface 25. Note that adhesive may also be applied to the entire upper surface 37 of the first wood-based plate 42a or partially (intermittently) to the upper surface 37.

[0130] The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b and the substantially flat upper surface 37 (opposing surface) of the second wood plate 42b overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are connected and fixed to the upper surface 37 of the second wood plate 42b by a plurality of fixing bolts 54 or fixing screws 54 arranged at equal intervals along the length, and the lower surface 25 of the metal base 17 is fixed (bonded) to the upper surface 37 of the second wood plate 42b by an adhesive (not shown) applied to the entire or partial lower surface 25 of the metal base 17. Note that adhesive may also be applied to the entire or partial upper surface 37 of the second wood plate 42b (intermittently).

[0131] The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c and the substantially flat upper surface 37 (opposing surface) of the third wood plate 42c overlap (abut), and the first side edge 23 and second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are connected and fixed to the upper surface 37 of the third wood plate 42c by a plurality of fixing bolts 54 or fixing screws 54 arranged at equal intervals along the length, and the lower surface 25 of the metal base 17 is fixed (bonded) to the upper surface 37 of the third wood plate 42c by adhesive (not shown) applied to the entire or partial lower surface 25 of the metal base 17. Note that adhesive may also be applied to the entire or partial upper surface 37 of the third wood plate 42c (intermittently).

[0132] The fixing bolts 54 or fixing screws 54 have a head 55 and a threaded portion 56, and an adhesive (not shown) is applied to the entire threaded portion 56. The threaded portions 56 of the fixing bolts 54 or fixing screws 54 are screwed (threaded) into the first to third wood plates 42a to 42c. When the fixing bolts 54 or fixing screws 54 are screwed (threaded) into the first to third wood plates 42a to 42c, the threaded portions 56 of the fixing bolts 54 or fixing screws 54 connect the metal base 17 and the first to third wood plates 42a to 42c (wood base 16), and the adhesive applied to the entire threaded portion 56 firmly bonds the fixing bolts 54 or fixing screws 54 to the first to third wood plates 42a to 42c (wood base 16). The screw depth (threading depth) of the fixing bolt 54 or the threaded portion 56 of the fixing screw 54 from the upper surface 37 of the first to third wood plates 42a to 42c (wood base 16) to the interior thereof is at least 50% and less than 98% of the thickness of the first to third wood plates 42a to 42c. Note that the metal base 17 and the first to third wood plates 42a to 42c may be connected and fixed only by the fixing bolt 54 or the fixing screw 54 (without adhesive).

[0133] In the composite deck plate 10C, similar to the arrangement of staples 39 shown in Figure 5, the number of threaded fixing bolts 54 or fixing screws 54 around the center of the central portion 22 of the metal base 17 may be greater than the number of threaded fixing bolts 54 or fixing screws 54 in the remaining central portion 22 excluding the center periphery of the metal base 17, and the number of threaded fixing bolts 54 or fixing screws 54 around the edges of the first and second edge portions 20, 21 of the metal base 17 may be greater than the number of threaded fixing bolts 54 or fixing screws 54 in the remaining first and second edge portions 20, 21 excluding the edges of the metal base 17.

[0134] Furthermore, similar to the arrangement of staples 39 shown in Figure 6, the number of threaded fixing bolts 54 or fixing screws 54 around the center of the central portion 22 of the metal base 17 may be greater than the number of threaded fixing bolts 54 or fixing screws 54 in the remaining central portion 22 excluding the center periphery of the metal base 17, the number of threaded fixing bolts 54 or fixing screws 54 around the edges of the first and second end edge portions 20, 21 of the metal base 17 may be greater than the number of threaded fixing bolts 54 or fixing screws 54 in the remaining first and second end edge portions 20, 21 excluding the edges of the metal base 17, and further, a plurality of fixing bolts 54 or fixing screws 54 may be arranged around the center of the central portion 22 of the metal base 17 at equal intervals (predetermined distance apart) in the width direction, and a plurality of fixing bolts 54 or fixing screws 54 may be arranged around the edges of the first and second end edge portions 20, 21 of the metal base 17 at equal intervals (predetermined distance apart) in the width direction. Furthermore, similar to the composite deck plate 10C shown in Figure 13, the metal base 17 and wood base 16 of the composite deck plates 10D to 10H may be connected and fixed by fixing bolts 54 or fixing screws 54 and adhesive (or no adhesive may be used).

[0135] In addition to the effects of composite deck plates 10A and 10B, composite deck plate 10C has the following effect: By fixing metal base 17 and first to third wood plates 42a to 42c (wood plates) using a large number of fixing bolts 54 or fixing screws 54 and adhesive (or sometimes no adhesive), composite deck plate 10C can firmly connect upper surfaces 37 of first to third wood plates 42a to 42c to underside 25 of metal base 17.

[0136] Figure 17 is a perspective view of a composite deck plate 10D as another example, and Figure 18 is a top view of the composite deck plate 10D of Figure 17. Figure 19 is a front view of the composite deck plate 10D of Figure 17. In Figure 17, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0137] The composite deck plate 10D shown in Figures 17 to 19 differs from the composite deck plate 10B of Figures 10 to 12 in that a portion of the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a overlaps in the width direction with a portion of the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b, and a portion of the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b overlaps in the width direction with a portion of the first side edge 23 of the metal base 17 of the third reinforced deck plate 15c.The rest of the configuration is the same as that of the composite deck plate 10B of Figures 10 to 12, so the description of the composite deck plate 10B of Figures 10 to 12 will be used and the same symbols as in Figures 10 to 12 will be used, and a detailed description of the composite deck plate 10D will be omitted.

[0138] The composite deck plate 10D has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that also extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through third wood plates 42a-42c (wood base 16) that also extend lengthwise and have a predetermined area. The first through third wood plates 42a-42c that form the wood base 16 are the same as those of the composite deck plate 10B.

[0139] In the composite deck plate 10D, the first reinforced deck plate 15a is placed on top of the first wood plate 42a, the second reinforced deck plate 15b is placed on top of the second wood plate 42b, and the third reinforced deck plate 15c is placed on top of the third wood plate 42c. In the composite deck plate 10D, the metal base 17 of the first reinforced deck plate 15a and the metal base 17 of the second reinforced deck plate 15b are aligned widthwise, with a portion of the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a and a portion of the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b overlapping widthwise. Furthermore, the metal base 17 of the second reinforcement deck plate 15b and the metal base 17 of the third reinforcement deck plate 15c are aligned widthwise with each other, with a portion of the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and a portion of the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c overlapping widthwise. In the composite deck plate 10D, the side edge of the first side edge 23 of the metal base 17 of the first reinforcement deck plate 15a coincides with the side edge of the first side edge 33 of the first wood plate 42a, and the first side edge 23 of the metal base 17 of the first reinforcement deck plate 15a overlaps with the first side edge 33 of the first wood plate 42a. The side edge of the second side edge portion 24 of the metal base 17 of the third reinforced deck plate 15c and the side edge of the second side edge portion 34 of the third wood-based plate 42c are aligned, and the second side edge portion 24 of the metal base 17 of the third reinforced deck plate 15c and the second side edge portion 34 of the third wood-based plate 42c overlap.

[0140] In the composite deck plate 10D, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a and the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are connected and fixed to the upper surface 37 of the first wood-based plate 42a by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b and the substantially flat upper surface 37 (opposing surface) of the second wood plate 42b overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are connected and fixed to the upper surface 37 of the second wood plate 42b by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c and the substantially flat upper surface 37 (opposing surface) of the third wood plate 42c overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are connected and fixed to the upper surface 37 of the third wood plate 42c by a plurality of staples 39 arranged at equal intervals in the lengthwise direction.

[0141] When the staples 39 are driven into the first to third wood plates 42a to 42c, the legs 41 of the staples 39 connect the metal base 17 to the first to third wood plates 42a to 42c (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to third wood plates 42a to 42c (wood base 16). Furthermore, in the composite deck plate 10D, similar to the composite deck plate 10C shown in Figure 13, the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed by fixing bolts 54 or fixing screws 54, or may be connected and fixed by fixing bolts 54 or fixing screws 54 and adhesive.

[0142] In addition to the advantages of composite deck plates 10A and 10B, composite deck plate 10D has the following advantages: By overlapping a portion of the first side edge 23 and a portion of the second side edge 24 of the metal bases 17 of the first through third reinforcement deck plates 15a through 15c that are adjacent in the width direction, composite deck plate 10D makes it easy to position the first through third reinforcement deck plates 15a through 15b on the first through third wood plates 42a through 42c (wood base 16), and the metal bases 17 can be accurately fixed to predetermined locations on the top surfaces 37 of the first through third wood plates 42a through 42c (wood base 16).This allows composite deck plate 10D to be produced efficiently, quickly, and without labor.

[0143] In the composite deck plate 10D, the first to third wood-based plates 42a to 42c (wood-based bases 16) are positioned on the undersides 25 of the metal bases 17 that are lined up in the width direction, and these wood-based plates 42a to 42c conceal the metal base 17 so that the metal base 17 is not exposed below the composite deck plate 10D.Instead, the first to third wood-based plates 42a to 42c are exposed below the composite deck plate 10D to form the ceiling surface, so the attractive design of the first to third wood-based plates 42a to 42c can be displayed on the ceiling surface, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and tranquility of the wood-based plates 42a to 42c, which are made of natural materials.

[0144] Figure 20 is a perspective view of a composite deck plate 10E as another example, and Figure 21 is a top view of the composite deck plate 10E of Figure 20. Figure 22 is a front view of the composite deck plate 10E of Figure 20. In Figure 20, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0145] The composite deck plate 10E shown in Figures 20 to 22 differs from that shown in Figures 10 to 12 in that the side edge of the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a abuts the side edge of the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b, and the side edge of the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b abuts the side edge of the first side edge 23 of the metal base 17 of the third reinforced deck plate 15c.The rest of the configuration is the same as that of the composite deck plate 10B in Figures 10 to 12, so the description of the composite deck plate 10B in Figures 10 to 12 will be used and the same symbols as in Figures 10 to 12 will be used, and a detailed description of the composite deck plate 10E will be omitted.

[0146] The composite deck plate 10E has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through third wood plates 42a-42c (wood base 16) that also extend lengthwise and have a predetermined area. The first through third wood plates 42a-42c that form the wood base 16 are the same as those of the composite deck plate 10B.

[0147] In the composite deck plate 10E, the first reinforced deck plate 15a is placed on top of the first wood plate 42a, the second reinforced deck plate 15b is placed on top of the second wood plate 42b, and the third reinforced deck plate 15c is placed on top of the third wood plate 42c. In the composite deck plate 10E, the metal base 17 of the first reinforced deck plate 15a and the metal base 17 of the second reinforced deck plate 15b are aligned widthwise, with the side edge of the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a abutting (closely contacting) with the side edge of the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b. Furthermore, the side edge of the second side edge portion 24 of the metal base 17 of the second reinforced deck plate 15b and the side edge of the first side edge portion 23 of the metal base 17 of the third reinforced deck plate 15c are in abutting (close contact) state, and the metal base 17 of the second reinforced deck plate 15b and the metal base 17 of the third reinforced deck plate 15c are lined up in the width direction.

[0148] In the composite deck plate 10E, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a and the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are connected and fixed to the upper surface 37 of the first wood-based plate 42a by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b and the substantially flat upper surface 37 (opposing surface) of the second wood plate 42b overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are connected and fixed to the upper surface 37 of the second wood plate 42b by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 18 of the third reinforced deck plate 15c and the substantially flat upper surface 37 (opposing surface) of the third wood plate 42c overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are connected and fixed to the upper surface 37 of the third wood plate 42c by a plurality of staples 39 arranged at equal intervals along the length.

[0149] When the staples 39 are driven into the first to third wood plates 42a to 42c, the legs 41 of the staples 39 connect the metal base 17 to the first to third wood plates 42a to 42c (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to third wood plates 42a to 42c (wood base 16). The staples 39 may be spaced apart at different intervals (randomly spaced) in the length direction. Furthermore, in the composite deck plate 10E, similar to the composite deck plate 10C shown in Figure 13, the metal base 17 and the first to third wood-based plates 42a to 42c (wood-based base 16) may be connected and fixed by fixing bolts 54 or fixing screws 54, or may be connected and fixed by fixing bolts 54 or fixing screws 54 and adhesive.

[0150] In addition to the advantages of composite deck plates 10A and 10B, composite deck plate 10E has the following advantages: By abutting the side edges of the first side edges 23 and second side edges 24 of the metal bases 17 of widthwise adjacent first through third reinforcement deck plates 15a-15c, composite deck plate 10E facilitates positioning of first through third reinforcement deck plates 15a-15c on first through third wood plates 42a-42c (wood base 16), and allows the metal bases 17 to be accurately fixed in predetermined locations on the top surfaces 37 of first through third wood plates 42a-42c (wood base 16). This allows composite deck plate 10E to be produced efficiently, quickly, and without labor.

[0151] In the composite deck plate 10E, the first to third wood-based plates 42a to 42c (wood-based bases 16) are positioned on the undersides 25 of the metal bases 17 that are lined up in the width direction, and these wood-based plates 42a to 42c conceal the metal base 17, so that the metal base 17 is not exposed below the composite deck plate 10E.Instead, the first to third wood-based plates 42a to 42c (wood-based bases 16) are exposed below the composite deck plate 10E to form the ceiling surface, so the attractive design of the first to third wood-based plates 42a to 42c can be displayed on the ceiling surface, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and tranquility of the wood-based plates 42a to 42c, which are natural materials.

[0152] Figure 23 is a perspective view of a composite deck plate 10F showing another example, and Figure 24 is a top view of the composite deck plate 10F of Figure 23. Figure 25 is a side view of the composite deck plate 10F of Figure 23. In Figure 23, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0153] The composite deck plate 10F has first and second side edge portions 11, 12 (both side edge portions) that extend in the lengthwise direction and are spaced apart opposite each other in the widthwise direction, and first and second end edge portions 13, 14 (both end edge portions) that extend in the widthwise direction and are spaced apart opposite each other in the lengthwise direction, and is formed from first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) of predetermined areas that extend in the lengthwise direction, and first to fifth wood-based plates 42a to 42e (wood-based base 16) of predetermined areas that extend in the widthwise direction.

[0154] There is no limit to the number of wood-based plates, and the composite deck plate 10F (including composite deck plates 10F and 10G) may be formed by two first and second wood-based plates (wood-based bases 16) extending in the width direction, three first to third wood-based plates (wood-based bases 16), or four first to fourth wood-based plates (wood-based bases 16), or the composite deck plate 10F (including composite deck plates 10F and 10G) may be formed by six or more first to nth wood-based plates (wood-based bases 16) extending in the width direction.

[0155] The first to fifth wood-based plates 42a to 42e (wood-based base 16) have first and second side edges 33, 34 (both side edges) that extend in the width direction and are spaced apart in the length direction, and first and second end edges 35, 36 (both end edges) that extend in the length direction and are spaced apart in the width direction, and have a substantially flat upper surface 37 and a substantially flat lower surface 38. The first to fifth wood-based plates 42a to 42e are the same shape and size, and are formed into a rectangular shape that is long in the length direction. The first to fifth wood-based plates 42a to 42e have the same length dimensions in the length direction and width direction, and are lined up in the width direction to form the wood-based base 16 with a predetermined area.

[0156] The first to fifth wood-based plates 42a to 42e (wood-based base 16) are made of any of the following materials already described in the description of the composite deck plate 10A: wood with a specified area, plywood with a specified area, wood-based siding material with a specified area, CLT (Cross Laminated Timber) with a specified area, oriented strand board (OSB plywood) with a specified area, wood cement board with a specified area, particle board with a specified area, and medium-density fiberboard (MDF) with a specified area.

[0157] A first upper joint 43a extending in the width direction is formed on the second side edge 34 of the first wood-based plate 42a. The first upper joint 43a is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge 34 of the first wood-based plate 42a from the lower surface 38 to the upper surface 37 of the plate 42a. A first lower joint 44a extending in the width direction is formed on the first side edge 33 of the second wood-based plate 42b. The first lower joint 44a is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge 33 of the plate 42b from the upper surface 37 to the lower surface 38 of the second wood-based plate 42b. A second upper joint 43b extending in the width direction is formed on the second side edge 34 of the second wood-based plate 42b. The second upper joint portion 43b is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge portion 34 of the second wood-based plate 42b from the lower surface 38 toward the upper surface 37. A second lower joint portion 44b extending in the width direction is formed in the first side edge portion 33 of the third wood-based plate 42c. The second lower joint portion 44b is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge portion 33 of the third wood-based plate 42c from the upper surface 37 toward the lower surface 38.

[0158] A third upper joint 43c extending in the width direction is formed on the second side edge 34 of the third wood-based plate 42c. The third upper joint 43c is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge 34 of the third wood-based plate 42c from the lower surface 38 to the upper surface 37 of the plate 42c. A third lower joint 44c extending in the width direction is formed on the first side edge 33 of the fourth wood-based plate 42d. The third lower joint 44c is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge 33 of the plate 42d from the upper surface 37 to the lower surface 38 of the fourth wood-based plate 42d. A fourth upper joint 43d extending in the width direction is formed on the second side edge 34 of the fourth wood-based plate 42d. The fourth upper joint 43d is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the second side edge 34 of the fourth wood-based plate 42d from the underside 38 toward the top side 37. A fourth lower joint 44d extending in the width direction is formed in the first side edge 33 of the fifth wood-based plate 42e. The fourth lower joint 44d is formed by cutting (on-site processing or pre-cutting) a portion (approximately half) of the first side edge 33 of the fifth wood-based plate 42e from the top side 37 toward the bottom side 38.

[0159] In the wood-based base 16, the second wood-based plate 42b is located longitudinally behind the first wood-based plate 42a, the third wood-based plate 42c is located longitudinally behind the second wood-based plate 42b, the fourth wood-based plate 42d is located longitudinally behind the third wood-based plate 42c, and the fifth wood-based plate 42e is located longitudinally behind the fourth wood-based plate 42d. The first to fifth wood-based plates 42a to 42e are arranged such that the first lower joint portion 44a of the second wood-based plate 42b is located directly below the first upper joint portion 43a of the first wood-based plate 42a, and the first upper joint portion 43a of the first wood-based plate 42a and the first lower joint portion 44a of the second wood-based plate 42b are overlapped in the vertical direction, and these joint portions 43a, 44a are joined and connected to each other with an adhesive (predetermined fixing means). The second lower joint part 44b of the third wood-based plate 42c is located directly below the second upper joint part 43b of the second wood-based plate 42b, and the second upper joint part 43b of the second wood-based plate 42b and the second lower joint part 44b of the third wood-based plate 42c are overlapped in the vertical direction, and these joint parts 43b, 44b are joined and connected to each other with an adhesive (predetermined fixing means).

[0160] The third lower joint part 44c of the fourth wood-based plate 42d is located directly below the third upper joint part 43c of the third wood-based plate 42c, and the third upper joint part 43c of the third wood-based plate 42c and the third lower joint part 44c of the fourth wood-based plate 42d are joined and connected to each other with an adhesive (predetermined fixing means) while they are overlapping in the vertical direction. The fourth lower joint part 44d of the fifth wood-based plate 42e is located directly below the fourth upper joint part 43d of the fourth wood-based plate 42d, and the fourth upper joint part 43d of the fourth wood-based plate 42d and the fourth lower joint part 44d of the fifth wood-based plate 42e are joined and connected to each other with an adhesive (predetermined fixing means) while they are overlapping in the vertical direction. The joint portions 43a to 43d and 44a to 44d may be connected and fixed to each other by staples 39, nails, rivets, fixing bolts, or rivets (fixing means).

[0161] In the composite deck plate 10F, first to third reinforced deck plates 15a to 15c extending in the lengthwise direction are arranged side by side in the widthwise direction and placed on top of first to fifth wood-based plates 42a to 42e extending in the widthwise direction. In the composite deck plate 10F, the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b, which are adjacent in the widthwise direction, extend parallel in the lengthwise direction while being spaced apart in the widthwise direction. Between the second side edge 24 of the metal base 17 of the first reinforced deck plate 15a and the first side edge 23 of the metal base 17 of the second reinforced deck plate 15b, the top surfaces 37 of the first to fifth wood-based plates 42a to 42e (wood, plywood, wood-based siding material, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)) are exposed.

[0162] In the composite deck plate 10F, the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c, which are adjacent in the width direction, extend parallel in the length direction while being spaced apart in the width direction. The top surfaces 37 of the first through fifth wood-based plates 42a through 42e (wood, plywood, wood-based siding, CLT, oriented strand board (OSB plywood), wood cement board, particle board, or medium-density fiberboard (MDF)) are exposed between the second side edge 24 of the metal base 17 of the second reinforcement deck plate 15b and the first side edge 23 of the metal base 17 of the third reinforcement deck plate 15c.

[0163] At the first side edge 11 (one side edge) of the composite deck plate 10F, the first edge 35 (one edge) of the first to fifth wood plates 42a to 42e extends widthwise outward from the first side edge 23 of the metal base 17 of the first reinforced deck plate 15a, exposing the top surfaces 37 of the first edge 35 of the first to fifth wood plates 42a to 42e. At the second side edge 12 (the other side edge) of the composite deck plate 10F, the second edge 36 (the other edge) of the first to fifth wood plates 42a to 42e extends widthwise outward from the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c, exposing the top surfaces 37 of the second edge 36 of the first to fifth wood plates 42a to 42e.

[0164] In the composite deck plate 10F, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b overlaps with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and the metal base 17 and the first to fifth wood-based plates 42a to 42e are connected and fixed by a plurality of staples 39 (fixing means) spaced equally apart in the length direction, as shown in Figures 19 to 21. Note that the staples 39 may be spaced at different intervals in the length direction.

[0165] In the composite deck plate 10F, the first side edge 23 and second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by multiple staples 39, the first side edge 23 and second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by multiple staples 39, and the first side edge 23 and second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by multiple staples 39.

[0166] The staples 39 are located on the first and second side edges 23, 24 of the metal base 17 of the first to third reinforced deck plates 15a to 15c, and are lined up intermittently at a predetermined distance in the length direction at the first and second side edges 23, 24 of the metal base 17, with their shoulders 40 extending in the width direction. The staples 39 have their legs 41 penetrating the metal base 17 and driven into the first to fifth wood plates 42a to 42e from their upper surfaces 37. When the staples 39 are driven into the first to fifth wood-based plates 42a to 42e, the legs 41 of the staples 39 connect the metal base 17 to the first to fifth wood-based plates 42a to 42e (wood-based base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to fifth wood-based plates 42a to 42e.

[0167] In the composite deck plate 10F (including composite deck plates 10G and 10H), the metal base 17 and the first to fifth wood-based plates 42a to 42e may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 5, or the metal base 17 and the first to fifth wood-based plates 42a to 42e may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 6, or the metal base 17 and the first to fifth wood-based plates 42a to 42e may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 7. In the composite deck plate 10F (including composite deck plates 10G and 10H), the metal base 17 and the first to fifth wood plates 42a to 42e may be connected and fixed by staples 39 arranged as shown in Fig. 8, or the metal base 17 and the first to fifth wood plates 42a to 42e may be connected and fixed by staples 39 arranged as shown in Fig. 9. Furthermore, in the composite deck plate 10F (including composite deck plates 10G and 10H), similar to the composite deck plate 10C shown in Fig. 13, the metal base 17 and the first to fifth wood plates 42a to 42e (wood base 16) may be connected and fixed by fixing bolts 54 or fixing screws 54, or by fixing bolts 54 or fixing screws 54 and adhesive.

[0168] The composite deck plate 10F has the following effects in addition to the effects of the composite deck plate 10A. The composite deck plate 10F has the metal bases 17 of the first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) fixed to the upper surfaces 37 of the first to fifth wood-based plates 42a to 42e (first to nth wood-based plates) extending in the width direction using a plurality of staples 39 (predetermined fixing means), and the first to fifth wood-based plates 42a to 42e (wood-based bases 16) are exposed below the composite deck plate 10F to form the ceiling surface of the building.This allows the attractive designs of the first to fifth wood-based plates 42a to 42e extending in the width direction to be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural materials of the first to fifth wood-based plates 42a to 42e. The composite deck plate 10F uses the first to fifth wood-based plates 42a to 42e (first to nth wood-based plates), which are sustainable and recyclable resources, and can effectively utilize forest resources and reduce CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0169] Figure 26 is a perspective view of another example of a composite deck plate 10G, and Figure 27 is a top view of the composite deck plate 10G of Figure 26. In Figure 26, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C. The composite deck plate 10G shown in Figures 26 and 27 differs from the composite deck plate 10D of Figures 17 to 19 in that the wood base 16 is formed from a plurality of first to fifth wood plates 42a to 42e that extend in the width direction and have a predetermined area. The other components are the same as those of the composite deck plate 10D of Figures 17 to 19. Therefore, the description of the composite deck plate 10D of Figures 17 to 19 will be used, and the same reference numerals as those in Figures 17 to 19 will be used, and a detailed description of the composite deck plate 10G will be omitted.

[0170] The composite deck plate 10G has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through fifth wood plates 42a-42e (wood base 16) that extend widthwise and have a predetermined area. The first through fifth wood plates 42a-42e that form the wood base 16 are the same as those of the composite deck plate 10E.

[0171] In composite deck plate 10G, first to third reinforced deck plates 15a to 15c extending in the lengthwise direction are arranged side by side in the widthwise direction and placed on top of first to fifth wood-based plates 42a to 42e extending in the widthwise direction. In composite deck plate 10G, metal base 17 of first reinforced deck plate 15a and metal base 17 of second reinforced deck plate 15b are arranged side by side in the widthwise direction, with part of second side edge 24 of metal base 17 of first reinforced deck plate 15a and part of first side edge 23 of metal base 17 of second reinforced deck plate 15b overlapping in the widthwise direction. Furthermore, a portion of the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b and a portion of the first side edge 23 of the metal base 17 of the third reinforced deck plate 15c overlap in the width direction, and the metal base 17 of the second reinforced deck plate 15b and the metal base 17 of the third reinforced deck plate 15c are lined up in the width direction.

[0172] In the composite deck plate 10G, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b overlaps with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and as shown in Figures 22 and 23, the metal base 17 and the first to fifth wood-based plates 42a to 42e are connected and fixed by a plurality of staples 39 (fixing means) arranged at equal intervals in the longitudinal direction.

[0173] When the staples 39 are driven into the first to fifth wood plates 42a to 42e, the legs 41 of the staples 39 connect the metal base 17 to the first to fifth wood plates 42a to 42e (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to fifth wood plates 42a to 42e. The staples 39 may be spaced apart at different intervals (randomly spaced) in the length direction.

[0174] The composite deck plate 10G has a first side edge 23 and a second side edge 24 of the metal base 17 of the first reinforced deck plate 15a fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39, a first side edge 23 and a second side edge 24 of the metal base 17 of the second reinforced deck plate 15b fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39, and a first side edge 23 and a second side edge 24 of the metal base 17 of the third reinforced deck plate 15c fixed to the top surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39.

[0175] In addition to the advantages of composite deck plates 10A and 10F, composite deck plate 10G has the following advantages: By overlapping a portion of the first side edge 23 and a portion of the second side edge 24 of the metal bases 17 of widthwise adjacent first through third reinforcement deck plates 15a through 15c, composite deck plate 10G makes it easy to position first through third reinforcement deck plates 15a through 15c on first through fifth wood plates 42a through 42e (wood base 16), and allows the metal bases 17 to be accurately fixed in predetermined locations on the top surfaces 37 of first through fifth wood plates 42a through 42e, allowing composite deck plate 10G to be produced efficiently, quickly, and without labor.

[0176] In the composite deck plate 10G, the first to fifth wood-based plates 42a to 42e (wood-based base 16) are positioned on the undersides 25 of the metal bases 17 of the first to third reinforced deck plates 15a to 15c that are lined up in the width direction, and these wood-based plates 42a to 42e conceal the metal base 17 so that the metal base 17 is not exposed below the composite deck plate 10G.Instead, the first to fifth wood-based plates 42a to 42e are exposed below the composite deck plate 10G to form the ceiling surface, so that the attractive designs of the first to fifth wood-based plates 42a to 42e can be displayed on the ceiling surface, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and tranquility of the wood-based plates 42a to 42e, which are natural materials.

[0177] Figure 28 is a perspective view of another example of a composite deck plate 10H, and Figure 29 is a top view of the composite deck plate 10H of Figure 28. In Figure 28, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C. The composite deck plate 10H shown in Figures 28 and 29 differs from the composite deck plate 10E of Figures 20 to 22 in that the wood base 16 is formed from a plurality of first to fifth wood plates 42a to 42e that extend in the width direction and have a predetermined area. The other components are the same as those of the composite deck plate 10E of Figures 20 to 22. Therefore, the description of the composite deck plate 10E of Figures 20 to 22 will be used, and the same reference numerals as those in Figures 20 to 22 will be used, and a detailed description of the composite deck plate 10H will be omitted.

[0178] The composite deck plate 10H has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through fifth wood plates 42a-42e (wood base 16) that extend widthwise and have a predetermined area. The first through fifth wood plates 42a-42e that form the wood base 16 are the same as those of the composite deck plate 10E.

[0179] In composite deck plate 10H, first to third reinforced deck plates 15a to 15c extending in the lengthwise direction are arranged side by side in the widthwise direction and placed on top of first to fifth wood-based plates 42a to 42e extending in the widthwise direction. In composite deck plate 10H, the side edge of the second side edge 24 of the metal base 17 of first reinforced deck plate 15a and the side edge of the first side edge 23 of the metal base 17 of second reinforced deck plate 15b are abutting (closely contacting) each other, and the metal base 17 of first reinforced deck plate 15a and the metal base 17 of second reinforced deck plate 15b are arranged side by side in the widthwise direction. Furthermore, the side edge of the second side edge portion 24 of the metal base 17 of the second reinforced deck plate 15b and the side edge of the first side edge portion 23 of the metal base 17 of the third reinforced deck plate 15c are in abutting (close contact) state, and the metal base 17 of the second reinforced deck plate 15b and the metal base 17 of the third reinforced deck plate 15c are lined up in the width direction.

[0180] In the composite deck plate 10H, the substantially flat lower surface 27 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b overlaps with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c overlaps (abuts) with the substantially flat upper surfaces 37 (opposing surfaces) of the first to fifth wood-based plates 42a to 42e, and as shown in Figures 24 and 25, the metal base 17 and the first to fifth wood-based plates 42a to 42e are connected and fixed by a plurality of staples 39 (fixing means) arranged at equal intervals in the longitudinal direction.

[0181] When the staples 39 are driven into the first to fifth wood plates 42a to 42e, the legs 41 of the staples 39 connect the metal base 17 to the first to fifth wood plates 42a to 42e (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to fifth wood plates 42a to 42e. The staples 39 may be spaced apart at different intervals (randomly spaced) in the length direction.

[0182] In the composite deck plate 10H, the first side edge 23 and second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are fixed to the upper surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39, the first side edge 23 and second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are fixed to the upper surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39, and the first side edge 23 and second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are fixed to the upper surfaces 37 of the first to fifth wood plates 42a to 42e by a plurality of staples 39.

[0183] In addition to the advantages of composite deck plates 10A and 10F, composite deck plate 10H has the following advantages: By abutting the side edges of the first side edges 23 and second side edges 24 of the metal bases 17 of widthwise adjacent first through third reinforcement deck plates 15a-15c, composite deck plate 10H makes it easy to position first through third reinforcement deck plates 15a-15c on first through fifth wood plates 42a-42e (wood base 16), and allows the metal bases 17 to be accurately fixed in predetermined locations on the top surfaces 37 of first through fifth wood plates 42a-42e, allowing composite deck plate 10H to be produced efficiently and without labor.

[0184] In the composite deck plate 10H, the first to fifth wood-based plates 42a to 42e (wood-based bases 16) are positioned on the underside of the metal bases 17 that are lined up in the width direction, and these wood-based plates 42a to 42e conceal the metal bases 17 so that the metal bases 17 are not exposed below the composite deck plate 10H.Instead, the first to fifth wood-based plates 42a to 42e are exposed below the composite deck plate 10H to form the ceiling surface, so that the attractive designs of the first to fifth wood-based plates 42a to 42e can be displayed on the ceiling surface, and a ceiling surface can be created that gives viewers the beauty, comfort, warmth, and tranquility of the wood-based plates 42a to 42e, which are natural materials.

[0185] Figure 30 is a perspective view of a composite deck plate 10I shown as another example, and Figure 31 is a top view of the composite deck plate 10I of Figure 30. Figure 32 is a front view of the composite deck plate 10I of Figure 30, and Figure 33 is a side view of the composite deck plate 10I of Figure 32. In Figure 30, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0186] The composite deck plate 10I has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that also extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through third wood plates 42a-42c (wood base 16) that also extend lengthwise and have a predetermined area. The first through third wood plates 42a-42c that form the wood base 16 are the same as those of the composite deck plate 10B.

[0187] Furthermore, there is no limit to the number of wood-based plates; similar to composite deck plate 10A, composite deck plate 10I may be formed by a single wood-based base 16, or composite deck plate 10I may be formed by two longitudinally extending first and second wood-based plates (wood-based bases 16) or four or more longitudinally extending first to nth wood-based plates (wood-based bases 16).

[0188] Similarly to composite deck plates 10F-10G, wood base 16 may be formed from first through fifth wood plates 42a-42e extending widthwise and aligned lengthwise. In this case, there is no limit to the number of wood plates. Composite deck plate 10I may be formed from two first and second wood plates (wood bases 16) extending widthwise and aligned lengthwise, or three first through third wood plates (wood bases 16), or four first through fourth wood plates (wood bases 16), or composite deck plate 10I may be formed from six or more first through nth wood plates (wood bases 16) extending widthwise and aligned lengthwise.

[0189] The first to third reinforced deck plates 15a-15c that make up the composite deck plate 10I are arranged above the first to third wood plates 42a-42c (wood base 16) and are aligned parallel to one another in the width direction. The first to third reinforced deck plates 15a-15c are formed from a metal base 17 of a predetermined area that is elongated in the length direction, and reinforcing bar truss units 19 (reinforced bar structure) that are positioned and fixed (installed) on the top surface 25 of the metal base 17. The reinforcing bar truss units 19 (reinforced bar structure) are positioned between first and second side edges 23, 24 of the metal base 17 and are aligned at equal intervals (predetermined intervals) in the width direction, extending lengthwise from the first edge 20 to the second edge 21.

[0190] Each rebar truss unit 19 is formed (assembled) from one upper end rebar 26, one lower end rebar 27, one lattice rebar 28, and multiple connecting rebars 45 that connect the upper end rebars 26 together. The upper end rebars 26 are made from elongated iron bars. Deformed iron bars (deformed rebars) with multiple nodes (ribs) on their periphery are used for the upper end rebars 26. The upper end rebars 26 are located between the first and second side edges 23, 24 of the metal base 17, at the center of the metal base 17 in the width direction, and extend linearly in the length direction at a predetermined distance upward from the top surface 18 of the metal base 17. The length dimensions of the upper end rebars 26 aligned in the width direction in each rebar truss unit 19 are approximately the same, and the upper end rebars 26 are aligned parallel to one another.

[0191] The lower end bars 27 are made from elongated iron bars. Deformed metal bars (deformed reinforcing bars) having multiple nodes (ribs) on their circumferential surfaces are used for the lower end bars 27. The lower end bars 27 are located between the first and second side edge portions 23, 24 of the metal base 17, in the center of the metal base 17 in the width direction, and are arranged below (directly below) the upper end bars 26. The lower end bars 27 extend linearly in the length direction, spaced a predetermined distance upward from the top surface 18 of the metal base 17. The length dimensions of the lower end bars 27 lined up in the width direction in each reinforcing bar truss unit 19 are approximately the same, and the lower end bars 27 are lined up in parallel.

[0192] The lattice reinforcement 28 is made from elongated iron rods. The lattice reinforcement 28 is located between the first and second side edge portions 23, 24 of the metal base 17, at the center of the width of the metal base 17, and is arranged between the upper end reinforcement 26 and the lower end reinforcement 27. The lattice reinforcement 28 is spaced a predetermined distance upward from the upper surface 18 of the metal base 17 and extends in the longitudinal direction, repeatedly bending (undulating) in a wavy manner in the vertical direction between the upper end reinforcement 26 and the lower end reinforcement 27. The lattice reinforcement 28 has an upper end convex portion 29 located on the upper end reinforcement 26 side and forming an arc that is convex upward, a lower end concave portion 30 located on the lower end reinforcement 27 side and forming an arc that is concave downward, and an intermediate portion 31 that extends at an angle in the longitudinal direction between the upper end convex portion 29 and the lower end concave portion 30.

[0193] The angle at which the lattice reinforcement 28 repeatedly bends in a wave-like manner in the up and down direction (the number of times the lattice reinforcement 28 repeatedly bends in a wave-like manner in the up and down direction per unit length) can be freely changed. The upper end convex portions 29 of the lattice reinforcement 28 are in contact with the circumferential surface of the upper end reinforcement 26, and the points of the upper end convex portions 29 that intersect with the upper end reinforcement 26 (intersection portions) are welded (fixed) to the upper end reinforcement 26 by spot welding. The lower end concave portions 30 of the lattice reinforcement 28 are in contact with the circumferential surface of the lower end reinforcement 27, and the points of the lower end concave portions 30 that intersect with the lower end reinforcement 27 (intersection portions) are welded (fixed) to the lower end reinforcement 27 by spot welding.

[0194] The connecting bars 45 are arranged at equal intervals (predetermined distances) along the length and extend widthwise, repeatedly bending (undulating) in a vertical wavy pattern. Each connecting bar 45 has an upper end 46 that abuts the circumferential surface of the upper end bars 26, spaced a predetermined distance above the upper surface 18 of the metal base 17 and straddling the upper end bars 26; a lower end 47 that is bent outward in the widthwise direction parallel to the upper surface 18 of the metal base 17; and an intermediate portion 48 that extends at an incline vertically between the upper end 46 and the lower end 47. The upper end 46 of the connecting bar 45 is welded (fixed) to the upper end bars 26 by spot welding at the portion where it abuts the circumferential surface of the upper end bars 26 (abutting portion). The lower end 47 of the connecting bar 45 is welded and fixed (joined) to the metal base 17 by spot welding at the portion where it abuts the metal base 17 (abutting portion).

[0195] There are no particular restrictions on the thickness of the upper end reinforcement 26, the lower end reinforcement 27, the lattice reinforcement 28, and the connecting reinforcement 45, and the thickness of the upper end reinforcement 26, the lower end reinforcement 27, the lattice reinforcement 28, and the connecting reinforcement 45 can be freely changed depending on the size of the ceiling slab to be constructed, the required strength, the amount of rebar required, etc. The upper end reinforcement 26, the lower end reinforcement 27, the lattice reinforcement 28, and the connecting reinforcement 45 are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 26, the lower end reinforcement 27, the lattice reinforcement 28, and the connecting reinforcement 45 are made of iron, they may be treated with an anti-rust treatment such as plating.

[0196] In the composite deck plate 10I, a first reinforced deck plate 15a is placed on a first wood-based plate 42a, a second reinforced deck plate 15b is placed on a second wood-based plate 42b, and a third reinforced deck plate 15c is placed on a third wood-based plate 42c. In the composite deck plate 10I, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a, and the first side edge 23 and second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are connected and fixed to the upper surface 37 of the first wood-based plate 42a by a plurality of staples 39 arranged at equal intervals along the length.

[0197] The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b and the substantially flat upper surface 37 (opposing surface) of the second wood plate 42b overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are connected and fixed to the upper surface 37 of the second wood plate 42b by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c and the substantially flat upper surface 37 (opposing surface) of the third wood plate 42c overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are connected and fixed to the upper surface 37 of the third wood plate 42c by a plurality of staples 39 arranged at equal intervals in the lengthwise direction.

[0198] In the composite deck plate 10I, when staples 39 are driven into the first to third wood plates 42a to 42c, the legs 41 of the staples 39 connect the metal base 17 to the first to third wood plates 42a to 42c (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to third wood plates 42a to 42c. Note that the staples 39 may be spaced apart at different intervals (randomly spaced) in the longitudinal direction.

[0199] 17 and composite deck plate 10G of Fig. 26, composite deck plate 10I may have a portion of first side edge 23 of metal base 17 and a portion of second side edge 24 of metal base 17 overlapping in the width direction. Composite deck plate 10I may have a side edge of first side edge 23 of metal base 17 and a side edge of second side edge 24 of metal base 17 abutting each other, similar to composite deck plate 10E of Fig. 20 and composite deck plate 10H of Fig. 28.

[0200] Furthermore, the composite deck plate 10I may be configured such that the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 5, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 6, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 7.

[0201] The composite deck plate 10I may be configured such that the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed together by staples 39 arranged as shown in FIG. 8, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed together by staples 39 arranged as shown in FIG. 9. In the composite deck plate 10I, similar to the composite deck plate 10C shown in FIG. 13, the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed by fixing bolts 54 or fixing screws 54, or may be connected and fixed by fixing bolts 54 or fixing screws 54 and adhesive.

[0202] The composite deck plate 10I has the following effects in addition to the effects of the composite deck plate 10A. The composite deck plate 10I has the metal bases 17 of the first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) fixed to the upper surfaces 37 of the first to third wood-based plates 42a to 42c (first to nth wood-based plates) extending in the longitudinal direction using a plurality of staples 39 (predetermined fixing means), and the first to third wood-based plates 42a to 42c (wood-based bases 16) are exposed below the composite deck plate 10I to form the ceiling surface of the building.This allows the attractive design of the first to third wood-based plates 42a to 42c extending in the longitudinal direction to be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural materials of the first to third wood-based plates 42a to 42c. The composite deck plate 10I uses first to third wood-based plates 42a to 42c (first to nth wood-based plates), which are sustainable and recyclable resources, and can effectively utilize forest resources and reduce CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced.

[0203] Figure 34 is a perspective view of an example composite deck plate 10J, Figure 35 is a top view of the composite deck plate 10J of Figure 34, and Figure 36 is a front view of the composite deck plate 10J of Figure 34. Figure 37 is a side view of the composite deck plate 10J of Figure 34. In Figure 34, the length direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction (thickness direction) is indicated by arrow C.

[0204] The composite deck plate 10J has first and second side edges 11, 12 (side edges) that extend lengthwise and are spaced apart, and first and second end edges 13, 14 (end edges) that also extend widthwise and are spaced apart. It is made up of first through third reinforced deck plates 15a-15c (first through nth reinforced deck plates) that extend lengthwise and have a predetermined area, and first through third wood plates 42a-42c (wood base 16) that also extend lengthwise and have a predetermined area. The first through third wood plates 42a-42c that form the wood base 16 are the same as those of the composite deck plate 10B.

[0205] Furthermore, there is no limit to the number of wood-based plates, and similar to the composite deck plate 10A, the composite deck plate 10J may be formed by a single wood-based base 16, or the composite deck plate 10J may be formed by two longitudinally extending first and second wood-based plates (wood-based bases) or four or more longitudinally extending first to nth wood-based plates (wood-based bases 16).

[0206] Similarly to composite deck plates 10F-10G, wood base 16 may be formed from first through fifth wood plates 42a-42e extending widthwise and aligned lengthwise. In this case, there is no limit to the number of wood plates. Composite deck plate 10J may be formed from two first and second wood plates (wood bases 16) extending widthwise and aligned lengthwise, or three first through third wood plates (wood bases 16), or four first through fourth wood plates (wood bases 16). Composite deck plate 10J may also be formed from six or more first through nth wood plates (wood bases 16) extending widthwise and aligned lengthwise.

[0207] The first to third reinforced deck plates 15a-15c that make up the composite deck plate 10J are arranged above the first to third wood plates 42a-42c (wood base 16) and are aligned parallel to one another in the width direction. The first to third reinforced deck plates 15a-15c are formed from a metal base 17 of a predetermined area that is elongated in the length direction, and reinforcing bar truss units 19 (reinforced bar structure) that are positioned and fixed (installed) on the top surface 18 of the metal base 17. The reinforcing bar truss units 19 (reinforced bar structure) are positioned between first and second side edges 23, 24 of the metal base 17 and are aligned at equal intervals (predetermined intervals) in the width direction, extending lengthwise from the first edge 20 to the second edge 21.

[0208] Each rebar truss unit 19 is formed (assembled) with one upper end bar 26, one lower end bar 27, one lattice bar 28, multiple upper horizontal bars 49, multiple lower horizontal bars 50, and multiple connecting members 51 (spacers). The upper end bars 26 are made of elongated iron rods. Deformed iron bars (deformed rebars) with multiple nodes (ribs) on their periphery are used for the upper end bars 26. The upper end bars 26 are located between the first and second side edges 23, 24 of the metal base 17, in the widthwise center of the metal base 17, and extend linearly in the lengthwise direction, spaced apart from the upper surface 18 of the metal base 17. The lengthwise dimensions of the upper end bars 26 aligned in the widthwise direction in each rebar truss unit 19 are approximately the same, and the upper end bars 26 are aligned parallel to one another.

[0209] The lower end bars 27 are made from elongated iron bars. Deformed metal bars (deformed reinforcing bars) having multiple nodes (ribs) on their circumferential surfaces are used for the lower end bars 27. The lower end bars 27 are located between the first and second side edge portions 23, 24 of the metal base 17, in the center of the metal base 17 in the width direction, and are arranged below (directly below) the upper end bars 26. The lower end bars 27 extend linearly in the length direction, spaced a predetermined distance upward from the top surface 18 of the metal base 17. The length dimensions of the lower end bars 27 lined up in the width direction in each reinforcing bar truss unit 19 are approximately the same, and the lower end bars 27 are lined up in parallel.

[0210] The lattice reinforcement 28 is made from elongated iron rods. The lattice reinforcement 28 is located between the first and second side edge portions 23, 24 of the metal base 17, at the center of the width of the metal base 17, and is arranged between the upper end reinforcement 26 and the lower end reinforcement 27. The lattice reinforcement 28 is spaced a predetermined distance upward from the upper surface 18 of the metal base 17 and extends in the longitudinal direction, repeatedly bending (undulating) in a wavy manner in the vertical direction between the upper end reinforcement 26 and the lower end reinforcement 27. The lattice reinforcement 28 has an upper end convex portion 29 located on the upper end reinforcement 26 side and forming an arc that is convex upward, a lower end concave portion 30 located on the lower end reinforcement 27 side and forming an arc that is concave downward, and an intermediate portion 31 that extends at an angle in the longitudinal direction between the upper end convex portion 29 and the lower end concave portion 30.

[0211] The angle at which the lattice reinforcement 28 repeatedly bends in a wave-like manner in the up and down direction (the number of times the lattice reinforcement 28 repeatedly bends in a wave-like manner in the up and down direction per unit length) can be freely changed. The upper end convex portions 29 of the lattice reinforcement 28 are in contact with the circumferential surface of the upper end reinforcement 26, and the points of the upper end convex portions 29 that intersect with the upper end reinforcement 26 (intersection portions) are welded (fixed) to the upper end reinforcement 26 by spot welding. The lower end concave portions 30 of the lattice reinforcement 28 are in contact with the circumferential surface of the lower end reinforcement 27, and the points of the lower end concave portions 30 that intersect with the lower end reinforcement 27 (intersection portions) are welded (fixed) to the lower end reinforcement 27 by spot welding.

[0212] The upper horizontal reinforcements 49 are made from elongated steel bars. The upper horizontal reinforcements 49 are deformed metal bars (deformed reinforcing bars) with multiple nodes (ribs) on their periphery. The upper horizontal reinforcements 49 are spaced a predetermined distance upward from the upper surface 18 of the metal base 17 and extend parallel to each other at equal intervals along the length. The upper horizontal reinforcements 49 are located directly below the upper end reinforcements 26 and the upper convex portions 29 of the lattice reinforcement bars 28, connecting the upper end reinforcements 26 arranged in the width direction and also connecting the upper convex portions 29 of the lattice reinforcement bars 28 arranged in the width direction. The upper horizontal reinforcements 49 intersect with the upper end reinforcements 26 and are welded (fixed) to the upper end reinforcements 26 and the lattice reinforcement bars 28 by spot welding at their intersections with the upper end reinforcements 26 and the upper convex portions 29 of the lattice reinforcement bars 28.

[0213] The lower cross bars 50 are made from elongated iron rods. The lower cross bars 50 are deformed metal bars (deformed reinforcing bars) with multiple nodes (ribs) on their periphery. The lower cross bars 50 are spaced a predetermined distance upward from the upper surface 18 of the metal base 17 and extend parallel to each other at equal intervals along the length. The lower cross bars 50 are located directly above the lower end bars 27 and the lower end recesses 30 of the lattice bars 28, connecting the lower end bars 27 arranged in the width direction and also connecting the lower end recesses 30 of the lattice bars 28 arranged in the width direction. The lower cross bars 50 intersect with the lower end bars 27 and are welded (fixed) to the lower end bars 27 and lattice bars 28 by spot welding at the intersections where they intersect with the lower end recesses 30 of the lattice bars 28.

[0214] These connecting members 51 (spacers) are made from iron bars and have hook portions 52 that convex upward in the vertical direction and form an arc, and leg portions 53 that extend widthwise from both ends of the hook portions 52, and connect and fix the rebar truss units 19 to the metal base 17. The hook portions 52 of the connecting members 51 are arranged at the points where the bottom end reinforcement 27, the bottom end recesses 30 of the lattice reinforcement 28, and the bottom cross reinforcement 50 intersect, and straddle the bottom end reinforcement 27, the bottom end recesses 30 of the lattice reinforcement 28, and the bottom cross reinforcement 50. The hook portions 52 of the connecting members 51 are welded (fixed) to the bottom cross reinforcement 50 or the lattice reinforcement 28 by spot welding at the points where they intersect with the bottom cross reinforcement 50 (intersections) or the points where they intersect with the bottom end recesses 30 of the lattice reinforcement 28 (intersections). The legs 53 of the connecting member 51 abut against the upper surface 18 of the metal base 17 and are welded (fixed) to the upper surface 18 of the metal base 17 by spot welding.

[0215] The reinforcing bar truss unit 19 does not necessarily have to have the bottom horizontal bars 50 attached. In this case, the hook portions 52 of the connecting members 51 straddle the bottom end bars 27 and the bottom end recesses 30 of the lattice bars 28, and the intersections (intersections) with the bottom end recesses 30 of the lattice bars 28 are welded (fixed) to the lattice bars 28 by spot welding. There are no particular restrictions on the thickness of the top end bars 26, bottom end bars 27, lattice bars 28, upper horizontal bars 49, and lower horizontal bars 50, and the thicknesses of the top end bars 26, bottom end bars 27, lattice bars 28, upper horizontal bars 49, and lower horizontal bars 50 can be freely changed depending on the size of the ceiling slab to be constructed, the required strength, the amount of reinforcing bar required, etc. The top end bars 26, bottom end bars 27, lattice bars 28, upper horizontal bars 49, and lower horizontal bars 50 are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 26, the lower end reinforcement 27, the lattice reinforcement 28, the upper horizontal reinforcement 49, and the lower horizontal reinforcement 50 are made of iron, they may be subjected to an anti-rust treatment such as plating.

[0216] In the composite deck plate 10J, a first reinforced deck plate 15a is placed on a first wood-based plate 42a, a second reinforced deck plate 15b is placed on a second wood-based plate 42b, and a third reinforced deck plate 15c is placed on a third wood-based plate 42c. In the composite deck plate 10J, the substantially flat lower surface 25 (opposing surface) of the metal base 17 of the first reinforced deck plate 15a overlaps (abuts) with the substantially flat upper surface 37 (opposing surface) of the first wood-based plate 42a, and the first side edge 23 and second side edge 24 of the metal base 17 of the first reinforced deck plate 15a are connected and fixed to the upper surface 37 of the first wood-based plate 42a by a plurality of staples 39 arranged at equal intervals along the length.

[0217] The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the second reinforced deck plate 15b and the substantially flat upper surface 37 (opposing surface) of the second wood plate 42b overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the second reinforced deck plate 15b are connected and fixed to the upper surface 37 of the second wood plate 42b by a plurality of staples 39 arranged at equal intervals along the length. The substantially flat lower surface 25 (opposing surface) of the metal base 17 of the third reinforced deck plate 15c and the substantially flat upper surface 37 (opposing surface) of the third wood plate 42c overlap (abut), and the first side edge 23 and the second side edge 24 of the metal base 17 of the third reinforced deck plate 15c are connected and fixed to the upper surface 37 of the third wood plate 42c by a plurality of staples 39 arranged at equal intervals in the lengthwise direction.

[0218] In the composite deck plate 10J, when staples 39 are driven into the first to third wood plates 42a to 42c, the legs 41 of the staples 39 connect the metal base 17 to the first to third wood plates 42a to 42c (wood base 16), and the adhesive applied to the entire shoulders 40 and legs 41 of the staples 39, or the entire legs 41 of the staples 39, or the lower halves of the legs 41 of the staples 39 firmly bonds the staples 39 to the first to third wood plates 42a to 42c. The staples 39 may be spaced apart at different intervals (randomly spaced) in the longitudinal direction.

[0219] 16 and composite deck plate 10G of Fig. 26, composite deck plate 10J may have a portion of first side edge 23 of metal base 17 and a portion of second side edge 24 of metal base 17 overlapping in the width direction. Composite deck plate 10J may have a side edge of first side edge 23 of metal base 17 and a side edge of second side edge 24 of metal base 17 abutting each other, similar to composite deck plate 10E of Fig. 20 and composite deck plate 10H of Fig. 28.

[0220] Furthermore, in the composite deck plate 10J, the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 5, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 6, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) may be connected and fixed by staples 39 (fixing means) arranged as shown in FIG. 7.

[0221] The composite deck plate 10J may be configured such that the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed together by staples 39 arranged as shown in FIG. 8, or the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed together by staples 39 arranged as shown in FIG. 9. In the composite deck plate 10J, similar to the composite deck plate 10C shown in FIG. 13, the metal base 17 and the first to third wood-based plates 42a to 42c arranged in the width direction (or the first to fifth wood-based plates 42a to 42e arranged in the length direction) are connected and fixed by fixing bolts 54 or fixing screws 54, or may be connected and fixed by fixing bolts 54 or fixing screws 54 and adhesive.

[0222] The composite deck plate 10J has the following effects in addition to the effects of the composite deck plate 10A. The composite deck plate 10J has the metal bases 17 of the first to third reinforced deck plates 15a to 15c (first to nth reinforced deck plates) fixed to the upper surfaces 37 of the first to third wood-based plates 42a to 42c (first to nth wood-based plates) extending in the longitudinal direction using a plurality of staples 39 (predetermined fixing means), and the first to third wood-based plates 42a to 42c (wood-based bases 16) are exposed below the composite deck plate 10J to form the ceiling surface of the building.This allows the attractive design of the first to third wood-based plates 42a to 42c extending in the longitudinal direction to be displayed on the ceiling surface, creating a ceiling surface that gives viewers the beauty, comfort, warmth, and tranquility of the natural materials of the first to third wood-based plates 42a to 42c. The composite deck plate 10J uses the first to third wood-based plates 42a to 42c (first to nth wood-based plates), which are sustainable and recyclable resources, and can effectively utilize forest resources and reduce CO 2 By contributing to the reduction of CO2 emissions, the burden on the environment can be reduced. [Explanation of symbols]

[0223] 10A Composite Deck Plate 10B composite deck plate 10C Composite Deck Plate 10D composite deck plate 10E composite deck plate 10F Composite deck plate 10G composite deck plate 10H composite deck plate 10I composite deck plate 10J composite deck plate 11 First side edge 12 Second side edge 13 First edge 14 Second edge 15a First reinforced deck plate 15b Secondary reinforced deck plate 15c Third reinforced deck plate 16 Wood base (wood plate) 17 Metal Base 18 Top 19 Steel truss unit 20 First edge 21 Second edge 22 Central part 23 First side edge 24 Second side edge 25 Bottom side 26 Top bar 27 Bottom reinforcement 27a 1st bottom reinforcement 27b 2nd bottom reinforcement 28 Lattice muscle 28a First lattice muscle 28b Second lattice muscle 29 Upper convex part 30 Lower recess 31 Middle section 32 Bent part 33 First side edge 34 Second side edge 35 First edge 36 Second edge 37 Top 38 Bottom side 39 Staples 40 Shoulder 41 Legs 42a First wood plate 42b Second wood plate 42c 3rd wood plate 42d 4th wood plate 42e No. 5 Wood Plate 43a First upper joint 43b Second upper joint 43c Third upper joint 43d Fourth upper joint 44a First lower joint 44b Second lower joint 44c Third lower joint 44d 4th lower joint 45 Connecting muscles 46 Upper end 47 Lower end 48 Middle section 49 Superior transverse muscle 50 Lower transverse muscle 51 Connecting member (spacer) 52 Hook part 53 Legs 54 Fixing bolt or fixing screw 55 Head 56 Threaded part

Claims

1. A composite deck plate having a predetermined area and both side edges extending in a length direction and both end edges extending in a width direction intersecting the length direction, The composite deck plate is formed from a wooden base of a predetermined area having both side edges extending in the length direction and both end edges extending in the width direction, and first to nth reinforced deck plates of predetermined areas arranged above the wooden base and aligned in the width direction, and the first to nth reinforced deck plates each comprise a metal base of a predetermined area having first and second edge portions extending in the width direction and spaced apart from each other in the length direction, and a central portion located between the first and second edge portions, and at least one reinforcement structure arranged on and fixed to the upper surface of the metal base and extending in the length direction between the first and second edge portions of the metal base, A composite deck plate characterized in that the wood base is formed from first to nth wood plates extending in the lengthwise direction in parallel with the reinforcement structure and aligned in the widthwise direction, and the metal bases of the first to nth reinforced deck plates are fixed to the upper surfaces of the first to nth wood plates aligned in the widthwise direction by a predetermined fixing means.

2. 10. The composite deck plate of claim 1, wherein the metal bases of the first through nth reinforced deck plates have a first side edge extending longitudinally and a second side edge extending longitudinally opposite the first side edge, the first and second side edges of the metal bases of adjacent widthwise reinforced deck plates being spaced apart widthwise, the wood bases being exposed between the first and second side edges of the metal bases of adjacent widthwise reinforced deck plates, one side edge of the wood base extending widthwise outward from the first side edge of the metal base of the reinforced deck plate at one side edge of the composite deck plate, and the other side edge of the wood base extending widthwise outward from the second side edge of the metal base of the reinforced deck plate at the other side edge of the composite deck plate.

3. 2. The composite deck plate of claim 1, wherein the metal bases of the first to nth reinforced deck plates have a first side edge portion located widthwise outside the reinforced structure and extending lengthwise, and a second side edge portion located widthwise outside the reinforced structure on the opposite side of the first side edge and extending lengthwise, and the composite deck plate is arranged widthwise such that a portion of the first side edge and a portion of the second side edge of the metal bases of adjacent reinforced deck plates overlap.

4. 2. The composite deck plate of claim 1, wherein the metal bases of the first to nth reinforced deck plates have a first side edge extending in the longitudinal direction and a second side edge located opposite the first side edge and extending in the longitudinal direction, and the composite deck plate is arranged in the width direction with the first side edge and the second side edge of the metal bases of adjacent reinforced deck plates abutting each other in the width direction.

5. A composite deck plate as described in any one of claims 1 to 4, wherein the first side edge and the second side edge of the metal base are fixed to the upper surfaces of the first to nth wood plates forming the wood base by a plurality of fixing means located on those side edges and arranged intermittently in the longitudinal direction.

6. The composite deck plate of claim 5, wherein the fastening means is a staple having a shoulder portion with a predetermined shoulder width and a pair of legs with a predetermined leg length, the staples being arranged intermittently at a predetermined distance apart in the length direction on the first and second side edges of the metal base with their shoulders extending in the width direction, and the legs being driven into the interior of the first to nth wood-based plates while penetrating the metal base.

7. 7. The composite deck plate of claim 6, wherein the number of staples driven in around the center of the central portion of the metal base is greater than the number of staples driven in the remaining central portion excluding the central periphery of the metal base, and the longitudinal spacing of the staples around the center of the central portion of the metal base is smaller than the longitudinal spacing of the staples in the remaining central portion, and the staples with their shoulders extending widthwise are driven into the interior of the first to nth wood-based plates in a dense state.

8. The composite deck plate of claim 7, wherein a plurality of staples with shoulders extending in the width direction are arranged at a predetermined distance apart in the width direction around the center of the central portion of the metal base and driven into the interior of the first to nth wood-based plates.

9. 9. A composite deck plate as claimed in any one of claims 6 to 8, wherein the number of staples driven into the edge periphery of the first and second end edges of the metal base is greater than the number of staples driven into the remaining first and second end edges excluding the edge periphery of the metal base, and the longitudinal spacing of the staples around the edge periphery of the first and second end edges of the metal base is smaller than the longitudinal spacing of the staples at the remaining first and second end edges, and the staples with their shoulders extending widthwise are driven into the interior of the first to nth wood-based plates in a dense state.

10. The composite deck plate of claim 9, wherein a plurality of staples with shoulders extending in the width direction are arranged at predetermined intervals in the width direction around the edges of the first and second edge portions of the metal base and driven into the interior of the first to nth wood-based plates.

11. The composite deck plate of claim 5, wherein the fastening means is a staple having a shoulder portion with a predetermined shoulder width and a pair of legs with a predetermined leg length, the staples being arranged intermittently at a predetermined distance in the longitudinal direction on the first and second side edges of the metal base with their shoulders extending in the longitudinal direction, and the legs being driven into the first to nth wood-based plates while penetrating the metal base.

12. 12. The composite deck plate of claim 11, wherein the number of staples driven in around the center of the central portion of the metal base is greater than the number of staples driven in the remaining central portion excluding the central periphery of the metal base, and the longitudinal spacing of the staples around the center of the central portion of the metal base is smaller than the longitudinal spacing of the staples in the remaining central portion, and the staples with their shoulders extending longitudinally are driven into the interior of the first to nth wood-based plates in a dense state.

13. The composite deck plate of claim 12, wherein a plurality of staples with shoulders extending longitudinally are arranged at a predetermined distance apart in the width direction around the center of the central portion of the metal base and driven into the interior of the first to nth wood-based plates.

14. 14. A composite deck plate according to claim 11, wherein the number of staples driven into the first and second edge portions of the metal base around the edges thereof is greater than the number of staples driven into the remaining first and second edge portions excluding the edge peripheries of the metal base, and the longitudinal spacing of the staples around the edges of the first and second edge portions of the metal base is smaller than the longitudinal spacing of the staples at the remaining first and second edge portions, and the staples with their shoulders extending longitudinally are driven into the interior of the first to nth wood-based plates in a dense state.

15. The composite deck plate of claim 14, wherein a plurality of staples with shoulders extending longitudinally are arranged at predetermined intervals in the width direction around the edges of the first and second edge portions of the metal base and driven into the interior of the first to nth wood-based plates.

16. 16. The composite deck plate according to claim 6, wherein the staples are coated with an adhesive.

17. 17. The composite deck plate of claim 1, wherein the metal base is a steel plate, and the first to nth wood-based plates are any of a predetermined area of ​​wood, a predetermined area of ​​plywood, a predetermined area of ​​wood-based siding material, a predetermined area of ​​CLT, a predetermined area of ​​oriented strand board (OSB plywood), a predetermined area of ​​wood cement board, a predetermined area of ​​particle board, and a predetermined area of ​​medium-density fiberboard (MDF).

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