Reinforced deck plate

Abstract

To provide a deck plate with reinforcement which can make the underside of a metallic base nice-looking and which can make the underside of the metallic base exposed to the inside of a building structure a nice-looking ceiling plane as it is.SOLUTION: A deck plate 10A with reinforcement that is used for construction of a ceiling slab comprises: a metallic base 11 with a specified area having both side edge parts 16 extending in a longitudinal direction and both end edge parts 17 extending in a width direction; at least one reinforcement truss 13 installed and fixed to a top face 12 of the metallic base 11 and positioned between both end edge parts 17 of the metallic base 11 and extending in a longitudinal direction; and a ceiling finishing material 15 which is joined to the side of an underside 14 exposed to the inside of a building structure in the metallic base 11, by predetermined joining means and which forms a ceiling plane of the building structure. The ceiling finishing material 15 is at least one of a cloth with a specified area extending flatly in longitudinal and width directions, plywood with a specified area extending flatly in longitudinal and width directions and a siding material with a specified area extending flatly in longitudinal and width directions.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a steel-reinforced deck plate of a predetermined area having side edge portions and end edge portions. [Background technology]

[0002] Patent Document 1 discloses a deck plate comprising a steel plate (metal base) of a predetermined area having side edges extending in the front-to-rear direction and both end edges extending in the width direction, a plurality of reinforcing bar trusses installed on the top surface of the steel plate and extending in the front-to-rear 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 in the front-to-rear direction (see Patent Document 1). The steel plate has a plurality of ridges extending upward in the front-to-rear direction from its top surface. The reinforcing bar trusses are formed from upper end reinforcement bars located above the top surface of the steel plate and extending in the front-to-rear direction between a pair of ridges arranged in the width direction, 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 front-to-rear direction, and a pair of lattice reinforcement bars extending in the front-to-rear direction while repeatedly bending in a wave-like pattern in the up-and-down direction 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] When constructing a ceiling slab for a steel-framed building, a reinforced concrete building, or a reinforced steel-framed concrete building using the deck plate disclosed in Patent Document 1, the underside of the steel plate (metal base) cannot be used as the ceiling surface as is, and 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 separate ceiling finishing work, which requires time and cost.Furthermore, in suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, there is a risk of ceiling collapse accidents in which the ceiling finishing materials fall when shaking (vibrations) due to earthquakes or the like occur.

[0006] An object of the present invention is to provide a reinforcing steel deck plate that can improve the visibility of the underside of the metal base and enable the underside of the metal base exposed inside the building to be used as a ceiling surface with a good view. Another object of the present invention is to provide a reinforcing steel 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 reinforcing steel deck plate that can be used to construct a ceiling slab that is not at risk of falling even when shaking (vibrations) caused by earthquakes or the like occurs, and that can prevent ceiling collapse accidents. [Means for solving the problem]

[0007] The premise of the present invention for solving the above problem is a reinforced deck plate of a specified area that has both side edges extending in the front-to-rear direction and both end edges extending in the width direction and is used to construct ceiling slabs in reinforced concrete buildings, reinforced concrete buildings, and reinforced steel-framed concrete buildings.

[0008] The feature of the present invention based on the above premise is that the reinforced concrete deck plate comprises a metal base of a predetermined area having both side edges extending in the front-to-rear direction and both end edges extending in the width direction, at least one reinforcing bar installed and fixed to the upper surface of the metal base and positioned between both end edges of the metal base and extending in the front-to-rear direction, and a ceiling finishing material joined by a predetermined joining means to the underside of the metal base exposed to the inside of the building, and the decorative surface of the ceiling finishing material forms the ceiling surface of the building.

[0009] One example of the present invention is a ceiling finishing material that is at least one of a wallpaper of a predetermined area that extends flatly in the front-to-back and width directions, a plywood of a predetermined area that extends flatly in the front-to-back and width directions, a siding material of a predetermined area that extends flatly in the front-to-back and width directions, and a wood material of a predetermined area that extends flatly in the front-to-back and width directions, and at least one of the wallpaper, plywood, siding material, and wood material is joined to the underside of a metal base by joining means to conceal the entire underside of the metal base while its decorative surface forms the ceiling surface of the building. In another example of the present invention, the joining means are staples with adhesive applied to the needles, and in a reinforced deck plate, at least one of wallpaper, plywood, siding material, and wood is joined to the underside of the metal base by a plurality of staples driven from the top surface of the metal base. In another example of the present invention, the joining means is an adhesive, and in the reinforced deck plate, at least one of wallpaper, plywood, siding material, and wood is joined to the underside of the metal base by the adhesive.

[0010] Another example of the present invention is a ceiling finishing material that is at least one of a wallpaper of a predetermined area that extends flatly in the front-to-back and width directions, a plywood of a predetermined area that extends flatly in the front-to-back and width directions, a siding material of a predetermined area that extends flatly in the front-to-back and width directions, a wood piece of a predetermined area that extends flatly in the front-to-back and width directions, and a tile material that is arranged in the front-to-back and width directions, and a base material of a predetermined area that extends flatly in the front-to-back and width directions is joined to the underside of a metal base by a joining means, and at least one of the wallpaper, plywood, siding material, wood, and tile material is joined to the underside of the base material by a joining means, concealing the entire underside of the metal base while its decorative surface forms the ceiling surface of the building. In another example of the present invention, the joining means are staples with adhesive applied to the needles, and in a reinforced deck plate, the base material is joined to the underside of the metal base by a plurality of staples driven from the top surface of the metal base, and at least one of wallpaper, plywood, siding material, and wood is joined to the underside of the base material by a plurality of staples driven from the top surface of the metal base. In another example of the present invention, the joining means is an adhesive, and in a reinforced deck plate, the base material is joined to the underside of the metal base by the adhesive, and at least one of wallpaper, plywood, siding material, wood, and tile material is joined to the underside of the base material by the adhesive.

[0011] Another example of the present invention is a ceiling finishing material having side edges extending in the front-to-rear direction parallel to side edges of the metal base, the metal base having a first engagement portion formed on one side edge and a second engagement portion formed on the other side edge, and in the reinforced concrete deck plate, in the process of connecting multiple deck plates in the width direction by facing the side edges of the ceiling finishing material to each other in the width direction, at least one of the first engagement portion of the metal base of one of the reinforced concrete deck plates and the second engagement portion of the metal base of the other of the reinforced concrete deck plates elastically deforms, and when the side edges of the ceiling finishing material are abutted against each other, the first engagement portion and the second engagement portion engage.

[0012] Another example of the present invention is a ceiling finishing material having side edge portions extending in the front-to-rear direction parallel to side edge portions of the metal base, the metal base having a first engagement portion formed on one side edge portion and a second engagement portion formed on the other side edge portion, and in a reinforced concrete deck plate, during the process of connecting multiple deck plates in the width direction, the side edge portions of the ceiling finishing material are abutted against each other, and then at least one of the first engagement portion of the metal base of one of the reinforced concrete deck plates and the second engagement portion of the metal base of the other reinforced concrete deck plate is plastically deformed to engage the first engagement portion with the second engagement portion.

[0013] Another example of the present invention is a construction in which the wallpaper is any one of vinyl wallpaper, fabric wallpaper, glass cloth, paper wallpaper, inorganic wallpaper, wood-based wallpaper, and olefin wallpaper; the plywood is any one of high-pressure melamine decorative boards, low-pressure melamine decorative boards, veneer decorative boards, olefin decorative boards, polyester decorative boards, printed decorative boards, DAP decorative boards, and PVC decorative boards; the siding material is any one of metal siding, ceramic siding, wood-based siding, and resin siding; the wood is any one of softwood and hardwood; the tile material is any one of porcelain tile, stoneware tile, and ceramic tile; and the joining means is at least one of nails, bolts, and rivets in addition to adhesive and staples, or at least one of nails, bolts, and rivets is used together with adhesive and staples. [Effects of the Invention]

[0014] According to the reinforced concrete deck plate of the present invention, the ceiling finishing material joined to the underside of the metal base by a predetermined joining means forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel-framed concrete building, thereby improving the visibility of the underside of the metal base exposed on the inside of such buildings, and when a ceiling slab is constructed using the reinforced concrete deck plate, the underside of the metal base exposed on the inside of such buildings can be used as a ceiling surface with a good view. Since the reinforced concrete deck plate has a ceiling finishing material joined to the underside of the metal base and forms the ceiling surface of the ceiling slab of such buildings, the ceiling slab of such buildings can be constructed without using suspension bolts to attach ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels, thereby eliminating the need for separate ceiling finishing work to install the ceiling finishing material and saving the effort and cost involved in ceiling finishing work. Because rebar deck plates do not require the use of suspension bolts to attach ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels, they can be used to construct ceiling slabs that are less likely to fall and prevent ceiling collapse accidents, even in the event of shaking (vibrations) caused by an earthquake, etc. By selecting the desired ceiling finish material from a variety of options, rebar deck plates allow you to create the ceiling surface you desire, exposing the desired ceiling finish material.

[0015] The ceiling finishing material is at least one of a cloth of a predetermined area extending flatly in the front-to-back and width directions, a plywood of a predetermined area extending flatly in the front-to-back and width directions, a siding material of a predetermined area extending flatly in the front-to-back and width directions, and a wood material of a predetermined area extending flatly in the front-to-back and width directions, and at least one of the cloth, plywood, siding material, and wood material is joined to the underside of a metal base by joining means to conceal the entire underside of the metal base while its decorative surface forms the ceiling surface of the building. At least one decorative surface of wallpaper, plywood, siding, or wood bonded to the underside of the steel-reinforced deck plate forms the ceiling surface of the ceiling slab of a steel-reinforced concrete building, a steel-reinforced concrete building, or a steel-reinforced concrete building, and because the decorative surface of the wallpaper, plywood, siding, or wood is exposed to the inside of the building as the ceiling surface of the ceiling slab, the underside of the metal base exposed to the inside of the building can be seen clearly, and the underside of the metal base (wallpaper, plywood, siding, or wood) can be used as the ceiling surface of the ceiling slab with a good appearance. Because the decorative surface of the wallpaper, plywood, siding, or wood bonded to the underside of the metal base of the steel-reinforced deck plate forms the ceiling surface of the ceiling slab of the building, the ceiling slab of the building can be constructed without using suspension bolts to attach ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels, eliminating the need for separate ceiling finishing work to install the ceiling finishing material and reducing the effort and cost involved in ceiling finishing work. Because reinforced deck plates do not require the use of suspension bolts to attach ceiling finishing materials such as decorative plywood, gypsum board, or aluminum panels, compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, even if shaking (vibrations) occurs due to an earthquake or other cause, there is no risk of wallpaper, plywood, siding, or wood falling, and a ceiling slab can be constructed that can prevent ceiling collapse accidents.The steel-reinforced deck plate allows the user to select the desired wallpaper, plywood, siding material, or wood from a variety of options, thereby creating a ceiling surface of his choice with the desired wallpaper, plywood, siding material, or wood exposed, and also allows the user to easily recreate a desired ceiling surface by replacing the old wallpaper, plywood, siding material, or wood with the desired new wallpaper, plywood, siding material, or wood. In a reinforced deck plate in which the joining means are staples with adhesive applied to the needles, and at least one of wallpaper, plywood, siding material, and wood is joined to the underside of the metal base by a plurality of staples driven from the top surface of the metal base, the decorative surface of at least one of the wallpaper, plywood, siding material, and wood joined to the underside of the metal base by the staples forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel-framed concrete building, and the decorative surface of the wallpaper, plywood, siding material, or wood is exposed to the inside of the building as the ceiling surface of the ceiling slab, so the underside of the metal base exposed to the inside of the building can be seen to be good looking, and the underside of the metal base (wallpaper, plywood, siding material, wood) can be used as the ceiling surface of the ceiling slab, which looks good, and you can create a ceiling surface that exposes the desired wallpaper, plywood, siding material, or wood. Because reinforced deck plates allow wallpaper, plywood, siding, and wood to be joined to the underside of the metal base with staples, it is possible to eliminate the need for separate ceiling finishing work to install ceiling finishing materials, thereby saving the effort and cost of ceiling finishing work.In addition, compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, there is no risk of wallpaper, plywood, siding, or wood falling even in the event of shaking (vibration) due to an earthquake, etc., and it is possible to construct a ceiling slab that can prevent ceiling collapse accidents. In a reinforced deck plate in which the joining means is an adhesive and at least one of wallpaper, plywood, siding material, and wood is adhesively bonded to the underside of the metal base, the decorative surface of at least one of the wallpaper, plywood, siding material, and wood adhesively bonded to the underside of the metal base forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel-framed concrete building, and the decorative surface of the wallpaper, plywood, siding material, or wood is exposed to the inside of the building as the ceiling surface of the ceiling slab, so the underside of the metal base exposed to the inside of the building can be seen to be good looking, and the underside of the metal base (wallpaper, plywood, siding material, wood) can be used as the ceiling surface of the ceiling slab with a good appearance, and a desirable ceiling surface can be created with the desired exposed wallpaper, plywood, siding material, or wood. Because reinforced deck plates allow wallpaper, plywood, siding, and wood to be bonded to the underside of the metal base with adhesive, it is possible to eliminate the need for separate ceiling finishing work, saving the effort and cost of ceiling finishing work.In addition, compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, there is no risk of wallpaper, plywood, siding, or wood falling even in the event of shaking (vibration) due to an earthquake, etc., and it is possible to construct a ceiling slab that can prevent ceiling collapse accidents.

[0016] The ceiling finishing material is at least one of a wallpaper of a predetermined area extending flatly in the front-to-back and width directions, a plywood of a predetermined area extending flatly in the front-to-back and width directions, a siding material of a predetermined area extending flatly in the front-to-back and width directions, a wood material of a predetermined area extending flatly in the front-to-back and width directions, and a tile material arranged in the front-to-back and width directions, and the base material of a predetermined area extending flatly in the front-to-back and width directions is joined to the underside of the metal base by a joining means, and at least one of the wallpaper, plywood, siding material, wood, and tile material is joined to the underside of the base material by a joining means, thereby concealing the entire underside of the metal base and the decorative surface forming the ceiling surface of the building. In a ribbed deck plate, the base material is joined to the underside of the metal base by a joining means, and at least one decorative surface of wallpaper, plywood, siding, wood, or tile material joined to the underside of the base material by the joining means forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel concrete building.Since the wallpaper, plywood, siding, wood, or tile material is exposed to the inside of the building as the ceiling surface of the ceiling slab, the underside of the metal base exposed to the inside of the building can be seen well, and the underside of the metal base (wallpaper, plywood, siding, wood, or tile material) can be used as an attractive ceiling surface as is. With a reinforced deck plate, the decorative surface of wallpaper, plywood, siding, wood, or tile bonded to the inner surface of the base material forms the ceiling surface, so a ceiling slab can be constructed using suspension bolts without attaching ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels, eliminating the need for separate ceiling finishing work and reducing the effort and cost required for ceiling finishing work. Because reinforced deck plates do not require the use of suspension bolts to attach ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels, a ceiling slab can be constructed that eliminates the risk of the base material, wallpaper, plywood, siding, wood, or tile falling even in the event of shaking (vibration) due to an earthquake, etc., and prevents ceiling collapse accidents, compared to suspended ceiling structures in which ceiling finish materials are attached using suspension bolts.By selecting the desired wallpaper, plywood, siding material, wood, or tile material from various types of rebar deck plates, it is possible to create a desired ceiling surface with the desired wallpaper, plywood, siding material, wood, or tile material exposed, and by replacing the old wallpaper, plywood, siding material, wood, or tile material with the desired new wallpaper, plywood, siding material, wood, or tile material, it is possible to easily create a desired ceiling surface. In a reinforced deck plate in which the joining means are staples with adhesive applied to the needles, the base material is joined to the underside of the metal base by a plurality of staples driven from the top surface of the metal base, and at least one of wallpaper, plywood, siding material, and wood is joined to the underside of the base material by a plurality of staples driven from the top surface of the metal base, the decorative surface of at least one of the wallpaper, plywood, siding material, and wood joined to the underside of the base material by the staples forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel-framed concrete building, and the decorative surface of the wallpaper, plywood, siding material, or wood is exposed to the inside of the building as the ceiling surface of the ceiling slab, so the underside of the metal base exposed to the inside of the building can be seen to be good-looking, and the underside of the metal base (wallpaper, plywood, siding material, wood) can be used as the ceiling surface of the ceiling slab as is, and a desirable ceiling surface can be created with the desired wallpaper, plywood, siding material, or wood exposed. With reinforced deck plates, the base material is joined to the underside of the metal base with staples, and wallpaper, plywood, siding, and wood are also joined to the underside of the base material with staples. This eliminates the need for separate ceiling finishing work to install ceiling finishing materials, saving the effort and cost of ceiling finishing work.In addition, compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, there is no risk of the base material, wallpaper, plywood, siding, or wood falling even in the event of shaking (vibration) due to an earthquake, etc., and a ceiling slab can be constructed that can prevent ceiling collapse accidents. In a reinforced deck plate in which the joining means is an adhesive, the base material is joined to the underside of the metal base with the adhesive, and at least one of wallpaper, plywood, siding, wood, and tile material is joined to the underside of the base material with the adhesive, the decorative surface of at least one of the wallpaper, plywood, siding, wood, and tile material joined to the underside of the base material with the adhesive forms the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced concrete building, or a reinforced steel concrete building, and the decorative surface of the wallpaper, plywood, siding, wood, or tile material is exposed to the inside of the building as the ceiling surface of the ceiling slab, so the underside of the metal base exposed to the inside of the building can be seen to be good-looking, and the underside of the metal base (wallpaper, plywood, siding, wood, or tile material) can be used as the ceiling surface of the ceiling slab, making it possible to create a desirable ceiling surface with the desired wallpaper, plywood, siding, wood, or tile material exposed. With reinforced steel deck plates, the base material is bonded to the underside of the metal base with adhesive, and wallpaper, plywood, siding, wood, and tile materials are bonded to the underside of the base material with adhesive. This eliminates the need for separate ceiling finishing work, saving the effort and cost of ceiling finishing work. Furthermore, compared to suspended ceiling structures in which ceiling finishing materials are attached using suspension bolts, there is no risk of the base material, wallpaper, plywood, siding, wood, or tile materials falling even in the event of shaking (vibration) due to an earthquake, etc., and a ceiling slab can be constructed that can prevent ceiling collapse accidents.

[0017] The ceiling finishing material has both side edges extending in the front-to-rear direction parallel to both side edges of the metal base, and the metal base has a first engagement portion formed on one side edge and a second engagement portion formed on the other side edge, and in the process of connecting multiple deck plates in the width direction by opposing the side edges of the ceiling finishing material to each other in the width direction, at least one of the first engagement portion of the metal base of one reinforcing steel deck plate and the second engagement portion of the metal base of the other reinforcing steel deck plate elastically deforms, and when the side edges of the ceiling finishing material are abutted against each other, the first engagement portion and the second engagement portion engage. In the process of connecting multiple deck plates in the width direction, a reinforcing bar deck plate that engages with a mating portion can easily connect multiple deck plates in the width direction by elastically deforming at least one of the first engagement portion of one reinforcing bar deck plate and the second engagement portion of the other reinforcing bar deck plate, and by abutting the side edges of the ceiling finish materials against each other, the first engagement portion and the second engagement portion engage. This reduces the effort required to connect multiple deck plates in the width direction and shortens the connecting time. Because the reinforcing bar deck plate engages with the first engagement portion and the second engagement portion when the side edges of the ceiling finish materials are abutted against each other, the reinforcing bar deck plate can reliably connect multiple deck plates in the width direction while reliably abutting the side edges of the ceiling finish materials against each other.

[0018] The ceiling finishing material has both side edges extending in the front-to-rear direction parallel to both side edges of the metal base, and the metal base has a first engagement portion formed on one side edge and a second engagement portion formed on the other side edge, and in the process of connecting multiple deck plates in the width direction, the side edges of the ceiling finishing material are abutted against each other, and then at least one of the first engagement portion of the metal base of one reinforcing bar deck plate and the second engagement portion of the metal base of the other reinforcing bar deck plate is plastically deformed to engage the first engagement portion with the second engagement portion. When connecting multiple deck plates in the width direction, the side edges of the ceiling finishing materials are abutted together, and then at least one of the first engagement portion of one reinforcing bar deck plate and the second engagement portion of the other reinforcing bar deck plate is plastically deformed to engage the first engagement portion with the second engagement portion, thereby easily connecting the multiple deck plates in the width direction and reliably connecting the multiple deck plates in the width direction while reliably abutting the side edges of the ceiling finishing materials.

[0019] The wallpaper is any of vinyl wallpaper, fabric wallpaper, glass cloth, paper wallpaper, inorganic wallpaper, wood-based wallpaper, and olefin wallpaper; the plywood is any of high-pressure melamine decorative boards, low-pressure melamine decorative boards, veneer decorative boards, olefin decorative boards, polyester decorative boards, printed decorative boards, DAP decorative boards, and PVC decorative boards; the siding material is any of metal siding, ceramic siding, wood-based siding, and resin siding; the wood is any of softwood and hardwood; the tile material is any of porcelain tile, stoneware tile, and ceramic tile; and the reinforcing steel deck plate uses at least one of nails, bolts, and rivets in addition to adhesive and staples as joining means, or at least one of nails, bolts, and rivets in addition to adhesive and staples, and the reinforcing steel deck plate can be used in various ways, such as the pattern, design, color (tone), and texture of the decorative surface. A desired ceiling surface can be selected from a variety of wallpapers with different shapes, gloss, thickness, etc., a variety of plywoods with different shapes, such as decorative surface patterns and designs, colors (hues), textures, gloss, thickness, etc., a variety of siding materials with different shapes, such as decorative surface patterns, designs, colors (hues), textures, gloss, thickness, etc., a variety of woods with different shapes, such as decorative surface patterns (wood grains) and thickness, and a variety of tile materials with different shapes, such as decorative surface patterns, designs, colors (hues), textures, gloss, shapes, thickness, etc., and a desired ceiling surface can be created in which the desired wallpaper, plywood, siding material, wood, or tile material is exposed.In addition, by replacing the wallpaper, plywood, siding material, wood, or tile material, old wallpaper, plywood, siding material, wood, or tile material can be replaced with the desired new wallpaper, plywood, siding material, wood, or tile material, and a desired ceiling surface can be easily recreated.In addition to adhesive and staples, reinforced deck plates use at least one of nails, bolts and rivets to join wallpaper, plywood, siding and tile materials to a metal base or base material, and to join the base material to the metal base; or, alternatively, use at least one of nails, bolts and rivets to join wallpaper, plywood, siding and tile materials to a metal base or base material, and to join the base material to the metal base, in addition to adhesive and staples. This makes it easy to join various types of wallpaper, plywood, siding materials, wood, tile materials and base materials to the metal base, firmly joining the base materials to the metal base, and firmly joining the wallpaper, plywood, siding materials, wood and tile materials to the base material, thereby reliably preventing the wallpaper, plywood, siding materials, wood, tile materials and base materials from peeling off or falling off the metal base. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 2 is a partially cutaway perspective view of an example of a deck plate with reinforcing bars. [Figure 2] Front view of the reinforcing steel deck plate of Figure 1. [Figure 3] Side view of the rebar deck plate of Figure 1. [Figure 4] FIG. 4 is an enlarged perspective view showing a state in which the first engaging portion and the second engaging portion are engaged with each other. [Figure 5] FIG. 10 is a partially enlarged perspective view showing another example of first and second engagement portions formed on the side edges of the metal base. [Figure 6] 6 is an enlarged perspective view showing a state in which the first engaging portion and the second engaging portion of FIG. 5 are engaged with each other. FIG. [Figure 7] FIG. 10 is a perspective view of a deck plate with reinforcing bars shown as another example. [Figure 8] FIG. 8 is a front view of the reinforcing steel deck plate of FIG. [Figure 9] Side view of the rebar deck plate of Figure 7. [Figure 10] FIG. 10 is a perspective view of a deck plate with reinforcing bars shown as another example. [Figure 11]FIG. 11 is a front view of the reinforcing steel deck plate of FIG. [Figure 12] Side view of the rebar deck plate of Figure 10. [Figure 13] FIG. 10 is a perspective view of a deck plate with reinforcing bars shown as another example. [Figure 14] FIG. 14 is a front view of the reinforcing steel deck plate of FIG. 13. [Figure 15] Side view of the rebar deck plate of Figure 13. [Figure 16] FIG. 10 is a perspective view of a deck plate with reinforcing bars shown as another example. [Figure 17] FIG. 17 is a front view of the reinforcing steel deck plate of FIG. 16. [Figure 18] FIG. 17 is a side view of the reinforcing steel deck plate of FIG. [Figure 19] FIG. 10 is a perspective view of a deck plate with reinforcing bars shown as another example. [Figure 20] FIG. 19 is a front view of the reinforcing steel deck plate. [Figure 21] Side view of the reinforcing steel deck plate of Figure 19. DETAILED DESCRIPTION OF THE INVENTION

[0021] The details of the reinforcing bar deck plate according to the present invention will be described below with reference to the accompanying drawings, such as Fig. 1, which is a perspective view of a reinforcing bar deck plate 10A as an example. Fig. 2 is a front view of the reinforcing bar deck plate 10A of Fig. 1, and Fig. 3 is a side view of the reinforcing bar deck plate 10A of Fig. 1. Fig. 4 is an enlarged perspective view showing a state in which the first engagement portion 18 and the second engagement portion 19 are engaged, and Fig. 5 is an enlarged perspective view showing another example of first and second engagement portions 20, 21 formed on the side edge portion 16 of the metal base 11. Fig. 6 is an enlarged perspective view showing a state in which the first engagement portion 20 and the second engagement portion 21 of Fig. 5 are engaged. 1 and 3, one end edge 17 of reinforcing steel deck plate 10A is not shown. While Figs. 1 to 3 show first and second engagement portions 18, 19 formed on side edge 16 of metal base 11, first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on side edge 16 of metal base 11. In Fig. 1, the front-to-rear direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction is indicated by arrow C.

[0022] A plurality of reinforcing steel deck plates 10A (including reinforcing steel deck plates 10B-10F) are connected widthwise and used to construct ceiling slabs in steel-reinforced concrete buildings, reinforced concrete buildings, and reinforced steel-framed concrete buildings. Reinforcing steel deck plate 10A is composed of a metal base 11 that is long in the front-to-rear direction and has a predetermined area, reinforcing steel trusses 13 (reinforcing bars) installed on an upper surface 12 of metal base 11, and a ceiling finish material 15 of a predetermined area that is joined (fixed) to an exposed underside 14 of metal base 11 on the inside of the building. While two reinforcing steel trusses 13 are installed on metal base 11 in FIG. 1, there are no particular limitations on the number of reinforcing steel trusses 13; one reinforcing steel truss 13 or three or more reinforcing steel trusses 13 may be installed on metal base 11 depending on the size of the ceiling slab to be constructed and the amount of reinforcing steel required.

[0023] Although a steel plate is used for the metal base 11, other metal plates such as aluminum, stainless steel, or titanium can also be used. The metal base 11 has side edge portions 16 extending in the front-to-rear direction, both end edge portions 17 extending in the width direction, a substantially flat upper surface 12, and a substantially flat lower surface 14. The upper and lower surfaces 12, 14 of the metal base 11 are plated. There are no particular limitations on the area of ​​the metal base 11, and the area can be freely determined depending on the size of the ceiling slab to be constructed.

[0024] As shown in FIG. 1 , one side edge 16 of the metal base 11 is formed with a plurality of first engagement portions 18, shown as an example of elastically deformable portions, spaced a predetermined distance apart in the front-to-rear direction, and the other side edge 16 is formed with second engagement portions 19, shown as an example of elastically deformable portions, extending in the front-to-rear direction. These first engagement portions 18 are formed by cutting one side edge 16 of the metal base 11 into an uneven shape and folding back approximately rectangular convex portions 18a (inclined portions) extending laterally in the width direction toward the top surface 12 of the metal base 11. These convex portions 18a (first engagement portions 18) are inclined portions that slope upward at a predetermined angle from one side edge 16 of the metal base 11 to the other side edge 16. These convex portions 18a (inclined portions) elastically deform in the up-and-down direction.

[0025] The second engagement portion 19 is formed by bending the other side edge 16 of the metal base 11 toward the top surface 12 of the metal base 11, forming a first inclined portion 19a that is inclined upwardly outward in the width direction; a horizontal portion 19b that extends substantially horizontally outward in the width direction from the tip of the first inclined portion 19a; and a second inclined portion 19c that is formed by bending the tip of the horizontal portion 19b back toward the top surface 12 of the metal base 11. An engagement opening 19d that extends in the front-rear direction is formed in the horizontal portion 19b. The second inclined portion 19c is inclined downwardly toward the top surface 12 of the metal base 11. The first inclined portion 19a (second engagement portion 19) is elastically deformable in the vertical direction.

[0026] 5, first engagement portions 20 (shown as another example) are formed on one side edge 16 of the metal base 11, spaced a predetermined distance apart in the front-to-rear direction, and second engagement portions 21 (shown as another example) are formed on the other side edge 16 and extend in the front-to-rear direction. The first engagement portions 20 are formed by folding one side edge 16 of the metal base 11 back toward the top surface 12 of the metal base 11. The first engagement portion 20 is an inclined portion 20a that slopes upward at a predetermined angle from one side edge 16 of the metal base 11 to the other side edge 16, and has an engagement opening 20b that extends in the front-to-rear direction. The second engagement portion 21 is formed by bending the other side edge 16 of the metal base 11 toward the top surface 12 of the metal base 11, forming an inclined portion 21a that slopes upward outward in the width direction, and an engagement portion 21b that is formed by folding back from the tip of the inclined portion 21a toward the top surface 12 of the metal base 11. The engagement portion 21b slopes downward toward the top surface 12 of the metal base 11.

[0027] The first engagement portions 18, 20 may be first hooks bent toward one of the upper surface 12 of the metal base 11 and the lower surface 14 of the metal base 11, and the second engagement portions 19, 21 may be second hooks bent toward the other of the upper surface 12 of the metal base 11 and the lower surface 14 of the metal base 11. In this case, the first hooks (first engagement portions 18, 20) and the second hooks (second engagement portions 19, 21) are engaged with each other to connect the reinforcing bar deck plate 10A in the width direction.

[0028] The metal base 11 is formed with a plurality of protruding portions 22 (protruding stripes) that protrude upward from its upper surface 12. The protruding portions 22 are located between both side edges 16 of the metal base 11, are spaced apart at equal intervals (predetermined intervals) in the width direction, and extend in the front-rear direction from one edge 17 to the other edge 17. The protruding portions 22 are formed by bending a portion of the metal base 11 inward in the width direction and folding a portion of the metal base 11 upward from its upper surface 12 in a mountain fold. The protruding portions 22 have a height of 3 to 10 mm in the vertical direction, and are formed in an arc-shaped front view as shown in FIG. 2. The front view of the protruding portions 22 may be a plate-like shape that extends linearly in the vertical direction, or may be an inverted V-shape.

[0029] The reinforcing bar trusses 13 are arranged between both side edges 16 of the metal base 11, spaced apart at equal intervals (predetermined intervals) in the width direction, and extend in the front-to-rear direction from one edge 17 to the other edge 17. Each reinforcing bar truss 13 is assembled from one upper end bar 23, two (a pair) lower end bars 24, and two (a pair) first and second lattice bars 25. The upper end bars 23 are made of elongated iron rods. The upper end bars 23 are made of deformed iron bars (deformed reinforcing bars) with multiple nodes (ribs) on their periphery. The upper end bars 23 are located between adjacent convex portions 22 (convex strips) in the width direction and extend straight in the front-to-rear direction, spaced apart upward from the top surface 12 of the metal base 11. The front-to-rear length of the upper end bars 23 arranged in the width direction in each reinforcing bar truss 13 is approximately the same, and the upper end bars 23 are arranged parallel to each other.

[0030] These bottom reinforcements 24 are made from elongated iron bars. Deformed metal bars (deformed reinforcing bars) with multiple nodes (ribs) on their circumferential surface are used for the bottom reinforcements 24. The bottom reinforcements 24 are located between adjacent convex portions 22 in the width direction (located a predetermined distance inward from the convex portions 22), and are located outside the lattice reinforcements 25, below the top reinforcements 23 and on both sides of the top reinforcements 23 in the width direction. The bottom reinforcements 24 extend linearly in the front-to-rear direction, spaced a predetermined distance upward from the top surface 12 of the metal base 11. The length dimension in the front-to-rear direction of the bottom reinforcements 24 lined up in the width direction in each reinforcing bar truss 13 is approximately the same, and these bottom reinforcements 24 are lined up in parallel.

[0031] The first and second lattice reinforcement bars 25 are made of elongated iron rods. These lattice reinforcement bars 25 are located between adjacent convex portions 22 in the width direction (located at a predetermined distance inward from the convex portions 22), and are also located between the upper surface 12 of the metal base 11 and the upper end reinforcement bars 23. The first and second lattice reinforcement bars 25 extend in the front-to-rear direction while repeatedly bending (undulating) in a wavy manner in the up-and-down direction between the upper surface 12 of the metal base 11 and the upper end reinforcement bars 23. These lattice reinforcement bars 25 have an upper end convex portion located on the upper end reinforcement bar 23 side and arching upward, a lower end concave portion located on the upper surface 12 of the metal base 11 side, and an intermediate portion extending at an angle in the front-to-rear direction between the upper end convex portion and the lower end concave portion. 2, the lattice reinforcement 25 is not perpendicular to the upper surface 12 of the metal base 11, but is inclined at a predetermined angle to the upper surface 12 of the metal base 11, and flares outward in the width direction from the upper convex portion to the lower concave portion. There is no particular restriction on the inclination angle of the lattice reinforcement 25 to the metal base 11, and the inclination angle can be freely changed.

[0032] The angle at which each lattice muscle 25 repeatedly bends in a wave-like manner in the vertical direction is constant, and the number of times that the lattice muscle 25 repeatedly bends in a wave-like manner in the vertical direction per unit length (for example, 1 m) is the same. The angle at which the lattice muscle 25 repeatedly bends in a wave-like manner in the vertical direction (the number of times that the lattice muscle 25 repeatedly bends 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 that the lattice muscle 25 repeatedly bends in a wave-like manner in the vertical direction per unit length), the vertical distance between the convex parts at the top ends of the lattice muscle 25 can be adjusted, and the vertical distance between the concave parts at the bottom ends of the lattice muscle 25 can be adjusted.

[0033] The first and second lattice reinforcement bars 25 are arranged symmetrically in the width direction, sandwiching the upper end reinforcement bars 23. Therefore, the positions of the upper end convex portions of the lattice reinforcement bars 25 aligned in the width direction are the same, the positions of the middle portions are the same, and the positions of the lower end concave portions are the same. The lattice reinforcement bars 25 have the same spacing between adjacent upper end convex portions in the front-to-rear direction, and the upper end convex portions are aligned at equal intervals in the front-to-rear direction, and the spacing between adjacent lower end concave portions in the front-to-rear direction is the same, and the lower end concave portions are aligned at equal intervals in the front-to-rear direction. The upper end convex portions of the first and second lattice reinforcement bars 25 abut against both sides (peripheral surfaces) of the upper end reinforcement bars 23 in the width direction, and the portions of the upper end convex portions that intersect with the upper end reinforcement bars 23 (intersection points) are welded (fixed) to the upper end reinforcement bars 23 by spot welding. The middle parts of the lattice reinforcement 25 are located inside the lower end reinforcement 24, and the parts of the middle parts that intersect with the lower end reinforcement 24 (intersection parts) are welded (fixed) to the lower end reinforcement 24 by spot welding.

[0034] The lower end recesses of the first and second lattice reinforcement bars 25 are bent outward in the width direction so as to be parallel to the upper surface 12 of the metal base 11, forming an arc that is convex outward in the width direction. A bent portion that extends outward in the width direction is formed in the lower end recesses. The bent portion of the lower end recess is located on the convex portion 22 of the metal base 11, and a part of it protrudes outward in the width direction from the convex portion 22, intersecting with the convex portion 22 at two points (two locations). The part of the bent portion that intersects with the convex portion 22 (intersection portion) is welded (fixed) to the convex portion 22 by spot welding. In these rebar trusses 13, the lower end recesses of the lattice reinforcement bars 25 are not bent outward in the width direction, and it is not necessary for a bent portion to be formed in the lower end recesses. In this case, the lower end recess of the lattice reinforcement 25 intersects and abuts against one of the protrusions 22 of the metal base 11, and the intersection point (intersection portion) of the lower end recess that intersects with one of the protrusions 22 is welded (fixed) to the protrusion 22 by spot welding. L-shaped end members 35 made from iron rods are installed and fixed to the edge portions 17 (one end and the other end) of the deck plate 10A with reinforcing bar trusses. The points where the end members 35 intersect with the upper end reinforcement 31 and the lower end reinforcement 32 (intersection portions) are welded and fixed (joined) to the upper end reinforcement 31 and the lower end reinforcement 32 by spot welding.

[0035] There are no particular restrictions on the thickness of the upper end reinforcement 23, the lower end reinforcement 24, and the lattice reinforcement 25, and the thickness of the upper end reinforcement 23, the lower end reinforcement 24, and the lattice reinforcement 25 can be freely changed according to the size of the ceiling slab to be constructed and the amount of rebar required for the ceiling slab. The upper end reinforcement 23, the lower end reinforcement 24, and the lattice reinforcement 25 are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 23, the lower end reinforcement 24, and the lattice reinforcement 25 are made of iron, they may be subjected to an anti-rust treatment such as plating.

[0036] The ceiling finishing material 15 is joined by a predetermined joining means to the underside 14 of the metal base 11 that is exposed to the inside of the building. In the reinforcing steel deck plate 10A, the decorative surface 26 of the ceiling finishing material 15 forms the ceiling surface of the building. The ceiling finishing material 15 uses at least one of a cloth of a predetermined area that extends flatly in the front-to-back and width directions, a plywood of a predetermined area that extends flatly in the front-to-back and width directions, a siding material of a predetermined area that extends flatly in the front-to-back and width directions, and a wood material of a predetermined area that extends flatly in the front-to-back and width directions. The wallpaper, plywood, siding material, and wood are joined to the underside 14 of the metal base 11 by a predetermined joining means. The joining means may be at least one of adhesive and staples 40, or at least one of nails, bolts, and rivets in addition to adhesive and staples 40, or at least one of nails, bolts, and rivets in addition to adhesive and staples 40.

[0037] The wallpaper used may be any of the following: vinyl wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface 26; cloth wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface; glass cloth with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface; paper wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface; inorganic wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface; wood-based wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface; and olefin wallpaper with different patterns, designs, colors (hues), textures, gloss, thickness, etc. for the decorative surface, but the wallpaper also includes any type of wallpaper that will be developed in the future.

[0038] The thickness of each cloth is in the range of 0.3 to 4 mm. An adhesive (not shown) is applied to the opposing (flat) surface of the cloth facing the underside 14 of the metal base 11, and the cloth is bonded (fixed) to the entire underside 14 of the metal base 11, excluding the first engagement portions 18, 20 and the second engagement portions 19, 21. The adhesive is preferably either an epoxy adhesive or a hot-melt adhesive, which undergoes little volume change upon hardening, but other types of adhesive may also be used. The cloth conceals the entire underside 14 of the metal base 11, while the decorative surface 26 exposed to the inside of the building forms the ceiling surface of the building. The cloth may be bonded (fixed) to the underside 14 of the metal base 11 by a joining means such as adhesive and rivets, adhesive and staples 40, or adhesive and nails (at least one of adhesive, staples 40, nails, bolts, and rivets).

[0039] For example, when multiple rebar-equipped deck plates 10A (including rebar-equipped deck plates 10B to 10F) are connected in the width direction, not only can the same type and shape of cloth be joined to the metal base 11 of all of the deck plates 10A, but also the same type but different shapes of cloth can be joined to the metal base 11 of the deck plates 10A to improve the design effect, or different types of cloth can be joined to the metal base 11 of the deck plates 10A to improve the design effect.Furthermore, different types and shapes of cloth can be joined to the metal base 11 of the deck plates 10A to improve the design effect.

[0040] Examples of plywood that are used include high-pressure melamine decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; low-pressure melamine decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; veneer decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; olefin decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; polyester decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; printed decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; DAP decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface; and PVC decorative panels with different patterns, designs, colors (hues), textures, glosses, thicknesses, etc. on the decorative surface, but plywood also includes all types of plywood that will be developed in the future.

[0041] The thickness of the plywood is in the range of 0.5 mm to 10 cm. An adhesive (not shown) is applied to the opposing surface (flat surface) of the plywood that faces the underside 14 of the metal base 11, and the plywood is joined (fixed) to the entire underside 14 of the metal base 11 with the adhesive (joining means) except for the first engagement portions 18, 20 and the second engagement portions 19, 21. The plywood is also joined (fixed) to the metal base 11 with a plurality of staples 40 (joining means) that extend in the vertical direction. The staples 40 are driven in the thickness direction (vertical direction) from the upper surface 12 of the metal base 11 toward the plywood using a staple gun or air stapler. The staples 40 are driven into a center portion 41 of the metal base 11 that extends between the rebar trusses 13 and into both side edge portions 16 of the metal base 11, and are spaced apart at equal intervals in the front-to-rear direction. Adhesive (not shown) is applied to the needles of staples 40, and after the needles are driven into the plywood, the adhesive firmly bonds the plywood to the needles of staples 40. The plywood conceals the entire underside 14 of metal base 11, while the decorative surface 26 exposed on the inside of a steel-reinforced concrete building, a steel-reinforced concrete building, or a steel-reinforced concrete building forms the ceiling surface of those buildings. Note that the plywood may be joined (fixed) to underside 14 of metal base 11 with only adhesive, only staples 40, adhesive and rivets, adhesive and bolts or nails, or at least one of nails, bolts, and rivets.

[0042] For example, when multiple rebar-equipped deck plates 10A (including rebar-equipped deck plates 10B to 10F) are connected in the width direction, not only can the same type and shape of plywood be joined to the metal base 11 of all of the deck plates 10A, but also plywood of the same type but different shapes can be joined to the metal base 11 of the deck plates 10A to improve the design effect, or different types of plywood can be joined to the metal base 11 of the deck plates 10A to improve the design effect.Furthermore, different types of plywood with different shapes can be joined to the metal base 11 of the deck plates 10A to improve the design effect.

[0043] Siding materials include metal siding with different decorative surface patterns, designs, colors (hues), textures, gloss, thickness dimensions, etc.; ceramic siding with different decorative surface patterns, designs, colors (hues), textures, gloss, thickness dimensions, etc.; wood siding with different decorative surface patterns, designs, colors (hues), textures, gloss, thickness dimensions, etc.; and resin siding with different patterns, designs, decorative surface patterns, designs, colors (hues), textures, gloss, thickness dimensions, etc., but the siding materials include all types of materials that will be developed in the future.

[0044] The thickness of these siding materials ranges from 0.5 mm to 10 cm. An adhesive (not shown) is applied to the facing (flat) surface of the siding material that faces the underside 14 of the metal base 11. The siding material is bonded (secured) to the entire underside 14 of the metal base 11, excluding the first engagement portions 18, 20 and the second engagement portions 19, 21, with the adhesive (bonding means). The siding material is also bonded (secured) to the metal base 11 with a plurality of staples 40 (bonding means) that extend vertically. The staples 40 are driven from the upper surface 12 of the metal base 11 to the siding material in the thickness direction (vertical direction) using a staple gun or air stapler. The staples 40 are driven into the center 41 of the metal base 11 that extends between the rebar trusses 13 and into both side edges 16 of the metal base 11, and are spaced apart at equal intervals in the front-to-rear direction. An adhesive (not shown) is applied to the needles of the staples 40, and after the needles are driven into the siding material, the adhesive firmly bonds the siding material to the needles of the staples 40. The siding material conceals the entire underside 14 of the metal base 11, while the decorative surface 26 exposed on the inside of a steel-framed building, a steel-reinforced concrete building, or a steel-reinforced concrete building forms the ceiling surface of these buildings. Note that the siding material may be joined (fixed) to the underside 14 of the metal base 11 with only adhesive, only staples 40, adhesive and rivets, adhesive and bolts or nails, or at least one of nails, bolts, and rivets.

[0045] For example, when multiple rebar-equipped deck plates 10A (including rebar-equipped deck plates 10B-10F) are connected in the width direction, not only can siding materials of the same type and shape be joined to the metal base 11 of all of the deck plates 10A, but also siding materials of the same type but different shapes can be joined to the metal base 11 of the deck plates 10A to improve the design effect, or different types of siding materials can be joined to the metal base 11 of the deck plates 10A to improve the design effect.Furthermore, different types of siding materials of different shapes can be joined to the metal base 11 of the deck plates 10A to improve the design effect.

[0046] The wood used is either softwood, which has different grain (decorative surface) patterns and thickness dimensions, or hardwood, which has different grain (decorative surface) and thickness dimensions. The thickness dimensions of these wood pieces range from 0.5 mm to 10 cm. An adhesive (not shown) is applied to the opposing (flat) surface of the wood piece facing the underside 14 of the metal base 11, and the wood piece is joined (fixed) to the entire underside 14 of the metal base 11 except for the first engagement portions 18, 20 and the second engagement portions 19, 21 with the adhesive (joining means). The wood piece is also joined (fixed) to the metal base 11 with staples 40 (joining means) extending in the vertical direction. The staples 40 (needles) are driven into the wood piece from the upper surface 12 of the metal base 11 in the thickness direction (vertical direction) using a staple gun or air stapler. The staples 40 are driven into the central portion 41 of the metal base 11 extending between the reinforcing bar trusses 13 and into both side edges 16 of the metal base 11, and are arranged at equal intervals in the front-to-rear direction. An adhesive (not shown) is applied to the needles of the staples 40, and after the needles are driven into the wood, the adhesive firmly bonds the wood and the needles. The wood conceals the entire underside 14 of the metal base 11, while the decorative surface 26 exposed on the inside of a steel-framed building, a steel-reinforced concrete building, or a steel-reinforced concrete building forms the ceiling surface of those buildings. Note that the wood may be joined (fixed) to the underside 14 of the metal base 11 with adhesive only, staples 40 only, adhesive and rivets, adhesive and bolts or nails, or at least one of nails, bolts, and rivets.

[0047] In one example of constructing a ceiling slab for a steel-framed building, a reinforced concrete building, or a reinforced steel-framed concrete building using reinforcing steel deck plates 10A (including reinforcing steel deck plates 10B-10F), the first engaging portions 18, 20 and the second engaging portions 19, 21 of the deck plates 10A are engaged to connect multiple deck plates 10A in the width direction to form an assembly of deck plates 10A (ceiling surface). Next, the assembly of connected reinforcing steel deck plates 10A is positioned and fixed between the width beams of the steel-framed building, reinforced concrete building, or reinforced steel-framed concrete building. Alternatively, multiple deck plates 10A may be connected in the width direction while being sequentially positioned and fixed between the width beams.

[0048] After the assembly of reinforcing steel deck plates 10A 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 steel troughs 13 toward the top surface 12 of the metal base 11, and the concrete is then cured for a specified period. When the concrete is poured onto the reinforcing steel deck plates 10A, the metal base 11 and reinforcing steel troughs 13 are embedded in the concrete. After the concrete has cured, the formwork is removed to complete the ceiling slab. On the ceiling slab, decorative surfaces 26 made of wallpaper, plywood, siding, wood, or tile are exposed as the ceiling surface of a steel-reinforced concrete building, a steel-reinforced concrete building, or a steel-reinforced concrete building.

[0049] An example of the procedure for connecting multiple reinforcing bar deck plates 10A (including reinforcing bar deck plates 10B-10F) in the width direction is as follows: With the side edges 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile) facing each other in the width direction, multiple reinforcing bar deck plates 10A are lined up in the width direction and the deck plates 10A are moved in the width direction so that they approach each other, bringing the side edges 27 of the ceiling finishing material 15 into contact with each other. During the process of bringing the side edges 27 of the ceiling finishing material 15 into contact with each other (the process of connecting multiple deck plates 10A in the width direction), the first engagement portion 18 (convex portion 18a (inclined portion)) formed on the side edge 16 of the metal base 11 of one deck plate 10A comes into contact with the second inclined portion 19c of the second engagement portion 19 formed on the side edge 16 of the metal base 11 of the other deck plate 10A.

[0050] As the reinforcing bar deck plates 10A are further moved widthwise, the second inclined portion 19c of the second engagement portion 19 rides up onto the upper surface 12 of the convex portion 18a (first engagement portion 18), and the second inclined portion 19c presses the convex portion 18a (first engagement portion 18) downward, causing the second inclined portion 19c to press the convex portion 18a (first engagement portion 18) downward, and in reaction, the convex portion 18a (first engagement portion 18) elastically deforms downward and the first inclined portion 19a of the second engagement portion 19 elastically deforms upward. When the second inclined portion 19c of the second engagement portion 19 rides over the convex portion 18a (first engagement portion 18), the pressing force of the second inclined portion 19c is released, causing the second inclined portion 19c to elastically deform downward and the convex portion 18a (first engagement portion 18) to elastically deform upward. When convex portion 18a (first engagement portion 18) elastically deforms upward, convex portion 18a (first engagement portion 18) engages with engagement opening 19d of horizontal portion 19b of second engagement portion 19, engaging first engagement portion 18 with second engagement portion 19. In reinforcing bar deck plate 10A (including reinforcing bar deck plates 10B to 10F), first engagement portion 18 and second engagement portion 19 engage when side edge portions 27 of ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile material) are brought into contact with each other.

[0051] In the process of connecting multiple deck plates 10A-10F in the width direction, at least one of the first engagement portion 18 (convex portion 18a (inclined portion)) of one deck plate 10A-10F and the second engagement portion 19 (first inclined portion 19a) of the other deck plate 10A-10F is elastically deformed, and when the side edge portions 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile material) are abutted against each other, the first engagement portion 18 (convex portion 18a (inclined portion)) and the second engagement portion 19 (engagement opening 19d in horizontal portion 19b) engage.This makes it easy to connect multiple deck plates 10A-10F in the width direction, reducing the effort required to connect multiple deck plates 10A-10F in the width direction and shortening the time required to connect them. When the side edge portions 27 of the reinforcing bar deck plates 10A to 10F are brought into contact with each other, the first engagement portion 18 and the second engagement portion 19 engage with each other, so that the side edge portions 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile material) can be reliably brought into contact with each other while reliably connecting multiple deck plates 10A to 10F in the width direction.

[0052] Another example of a procedure for connecting multiple reinforcing bar deck plates 10A (including reinforcing bar deck plates 10B-10F) widthwise is as follows: With the side edges 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile) facing each other widthwise, multiple reinforcing bar deck plates 10A are lined up widthwise, and the deck plates 10A are moved widthwise so that they approach each other, bringing the side edges 27 of the ceiling finishing material 15 into contact with each other. When the side edges 27 of the ceiling finishing material 15 are brought into contact with each other, the engaging portion 21b of the second engaging portion 21 formed on one side edge 16 of the metal base 11 is positioned directly above the engaging opening 20b of the first engaging portion 20 (inclined portion 20a) formed on the other side edge 16 of the metal base 11.

[0053] After the side edges 27 of the ceiling finishing material 15 are brought into contact with each other, the inclined portion 21a of the second engagement portion 21 is plastically deformed downward, or the first engagement portion 20 (inclined portion 20a) is plastically deformed upward. When the inclined portion 21a of the second engagement portion 21 is plastically deformed downward, or the first engagement portion 20 (inclined portion 20a) is plastically deformed upward, the engagement portion 21b of the second engagement portion 21 engages with the engagement opening 20b of the first engagement portion 20 (inclined portion 20a), and the first engagement portion 20 and the second engagement portion 21 engage with each other. In the reinforced deck plate 10A (including reinforced deck plates 10B to 10F), the side edge portions 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile material) are abutted against each other, and then at least one of the first engaging portion 20 and the second engaging portion 21 is plastically deformed to engage the first engaging portion 20 and the second engaging portion 21.

[0054] When connecting multiple reinforcing bar deck plates 10A-10F in the width direction, the multiple deck plates 10A-10F can be easily connected in the width direction by abutting the side edge portions 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile) against each other, and then plastically deforming at least one of the first engagement portion 20 (inclined portion 20a) of one deck plate 10A-10F and the second engagement portion 21 (inclined portion 21a) of the other deck plate 10A-10F to engage the first engagement portion 20 (engagement opening 20b in inclined portion 20a) with the second engagement portion 21 (engagement portion 21b).This allows the multiple deck plates 10A-10F to be reliably connected in the width direction while the side edge portions 27 of the ceiling finishing material 15 (wallpaper, plywood, siding, wood, tile) are reliably abutted against each other.

[0055] Fig. 7 is a perspective view of a reinforcing steel deck plate 10B as another example, and Fig. 8 is a front view of the reinforcing steel deck plate 10B of Fig. 7. Fig. 9 is a side view of the reinforcing steel deck plate 10B of Fig. 7. One end edge 17 of the reinforcing steel deck plate 10B is not shown in Figs. 7 and 9. Fig. 7 illustrates a state in which the first and second engagement portions 18, 19 shown in Fig. 1 are formed on the side edge 16 of the metal base 11, but the first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on the side edge 16 of the metal base 11. Furthermore, a first hook (first engagement portion) bent toward one of the upper surface 12 side and the lower surface 14 side may be formed on one side edge portion 16 of the metal base 11 of the reinforced deck plate 10B, and a second hook (second engagement portion) bent toward the other of the upper surface 12 side and the lower surface 14 side may be formed on the other side edge portion 16 of the metal base 11.

[0056] This reinforcing steel deck plate 10B differs from that shown in Figure 1 in that a base material 28 is joined to the underside 14 of the metal base 11, and a ceiling finishing material 15 is joined to the underside 29 of the base material 28. The other components are the same as those of the reinforcing steel deck plate 10A shown in Figure 1, so the same symbols as in Figure 1 are used and the explanation of the reinforcing steel deck plate 10A shown in Figure 1 is used, and detailed explanations of the other components of this reinforcing steel deck plate 10B will be omitted.

[0057] The reinforcing steel deck 10B is composed of a metal base 11 that is long in the front-to-rear direction and has a predetermined area; a reinforcing steel truss 13 (reinforcing steel) installed on the upper surface 12 of the metal base 11; a base material 28 of a predetermined area joined (fixed) to the underside 14 of the metal base 11 that faces the inside of the building; and a ceiling finish material 15 of a predetermined area joined (fixed) to the underside 29 of the base material 28 that faces the inside of the building. The metal base 11 and the reinforcing steel truss 13 (one upper end bar 23, two (a pair) lower end bars 24, two (a pair) first and second lattice bars 25, and end member 35) are the same as those of the reinforcing steel deck 10A in Figure 1. The first and second engagement portions 18 and 19 formed on both side edges 16 of the metal base 11 are the same as those of the reinforcing steel deck 10A in Figure 1.

[0058] In the rebar-equipped deck plate 10B, a base material 28 of a predetermined area extending flatly in the front-to-rear and width directions is joined (fixed) to the underside 14 of the metal base 11 by a predetermined joining means. The base material 28 is made of plywood (ordinary plywood), plasterboard, or wood. The base material 28 has a thickness ranging from 0.5 mm to 3 cm. An adhesive (not shown) is applied to the opposing (flat) surface facing the underside 14 of the metal base 11. The base material 28 is joined (fixed) to the entire underside 14 of the metal base 11, excluding the first and second engagement portions 18 and 19, by the adhesive (joining means). The base material 28 is also joined (fixed) to the metal base 11 by staples 40 (joining means) extending in the vertical direction. These staples are driven in the thickness direction (vertical direction) from the top surface 12 of the metal base 11 toward the base material 28 using a staple gun or air stapler. The staples 40 are driven into the central portion 41 of the metal base 11 extending between the reinforcing bar trusses 13 and into both side edges 16 of the metal base 11, and are arranged at equal intervals in the front-to-rear direction. An adhesive (not shown) is applied to the needles of the staples 40, and after the needles are driven into the base material 28, the adhesive firmly bonds the base material 28 and the needles. The base material 28 covers the entire underside 14 of the metal base 11. Note that the base material 28 may be joined (fixed) to the underside 14 of the metal base 11 by adhesive only, staples 40 only, adhesive and rivets, adhesive and bolts, adhesive and nails, or other joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0059] The ceiling finishing material 15 is joined by a predetermined joining means to the underside 29 of the base material 28 that is exposed inside (below) the building. In the reinforced deck plate 10B, the decorative surface 26 of the ceiling finishing material 15 forms the ceiling surface of the building. The ceiling finishing material 15 uses at least one of a cloth of a predetermined area that extends flatly in the front-to-back and width directions, a plywood of a predetermined area that extends flatly in the front-to-back and width directions, a siding material of a predetermined area that extends flatly in the front-to-back and width directions, a wood material of a predetermined area that extends flatly in the front-to-back and width directions, and tile material lined up in the front-to-back and width directions. The wallpaper is firmly bonded (fastened) to the underside 29 of the base material 28 with adhesive. The plywood, siding, and wood are firmly bonded (fastened) to the underside 29 of the base material 28 with adhesive and a plurality of staples 40 (the same staples 40 as the staples 40 that join the base material 28 and the metal base 11). The staples of the staples 40 penetrate the metal base 11 and the base material 28 and reach the plywood, siding, or wood. After the staples 40 are driven into the plywood, siding, or wood, an adhesive firmly bonds the staples to the plywood, siding, or wood. Note that the wallpaper, plywood, siding, and wood may be bonded to the underside 29 of the base material 28 with a predetermined joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0060] The wallpaper, plywood, siding, and wood are the same as those used for the rebar deck plate 10A. The tile materials used include porcelain tiles with different patterns, designs, colors (hues), textures, gloss, shapes, thicknesses, etc. on the decorative surface 26; stoneware tiles with different patterns, designs, colors (hues), textures, gloss, shapes, thicknesses, etc. on the decorative surface 26; and ceramic tiles with different patterns, designs, colors (hues), textures, gloss, shapes, thicknesses, etc. on the decorative surface 26, but this also includes any type of tile material developed in the future. The tiles have an adhesive (not shown) applied to the opposing surface (flat surface) facing the underside 29 of the base material 28, and are firmly bonded (fixed) to the underside 29 of the base material 28 with the adhesive (bonding means).

[0061] For example, when multiple reinforcing bar deck plates 10B (including reinforcing bar deck plates 10D and 10F) are connected in the width direction, not only may tile materials of the same type and shape be bonded to the base material 28 of all of the deck plates 10B, but also may tile materials of the same type but different shapes be bonded to the base material 28 of the deck plates 10B to enhance the design effect, or different types of tile materials be bonded to the base material 28 of the deck plates 10B to enhance the design effect. Furthermore, different types of tile materials of different shapes may be bonded to the base material 28 of the deck plates 10B to enhance the design effect. Wallpaper, plywood, siding, wood, and tile materials conceal the entire underside 14 of the metal base 11 (the entire underside 29 of the base material 28), while the decorative surface 26 exposed inside (below) of a steel-reinforced concrete building, a steel-reinforced concrete building, or a steel-reinforced concrete building forms the ceiling surface of these buildings.

[0062] Fig. 10 is a perspective view of a reinforcing steel deck plate 10C as another example, and Fig. 11 is a front view of the reinforcing steel deck plate 10C of Fig. 10. Fig. 12 is a side view of the reinforcing steel deck plate 10C of Fig. 10. One edge 17 of the reinforcing steel deck plate 10C is not shown in Figs. 10 and 12. In Fig. 10, the front-to-rear direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction is indicated by arrow C. Fig. 10 illustrates a state in which the first and second engagement portions 18, 19 shown in Fig. 1 are formed on the side edge 16 of the metal base 11, but the first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on the side edge 16 of the metal base 11. Furthermore, a first hook (first engagement portion) bent toward one of the upper surface 12 side and the lower surface 14 side may be formed on one side edge portion 16 of the metal base 11 of the reinforced concrete deck plate 10C, and a second hook (second engagement portion) bent toward the other of the upper surface 12 side and the lower surface 14 side may be formed on the other side edge portion 16 of the metal base 11.

[0063] The reinforcing steel deck plate 10C is formed from a metal base 11 that is long in the front-to-rear direction and has a predetermined area, reinforcing steel trusses 30 (reinforcing bars) installed on the upper surface 12 of the metal base 11, and a ceiling finish material 15 of a predetermined area that is fixed to the underside 12 of the metal base 11 that is exposed inside the building. The metal base 11 and the first and second engagement portions 18 and 19 formed on both side edges 16 of the metal base 11 are the same as those of the reinforcing steel deck plate 10A in Figure 1. In Figure 10, four reinforcing steel trusses 30 are installed on the metal base 11, but there is no particular limit to the number of reinforcing steel trusses 30; one, two, three, or five or more reinforcing steel trusses 30 may be installed on the metal base 11 depending on the size of the ceiling slab to be constructed and the amount of reinforcing steel required, etc.

[0064] The reinforcing bar trusses 30 are arranged between both side edges 16 of the metal base 11, spaced apart at equal intervals (predetermined intervals) in the width direction, and extend in the front-to-rear direction from one edge 17 to the other edge 17. Each reinforcing bar 30 is assembled from one upper end bar 31, one lower end bar 32, one lattice bar 33, and multiple connecting bars 34 that connect the reinforcing bar trusses 30 together. The upper end bars 31 are made from elongated iron bars. The upper end bars 30 are made from deformed iron bars (deformed reinforcing bars) with multiple nodes (ribs) on their periphery. The upper end bars 30 are located between adjacent convex portions 22 (convex strips) in the width direction and extend linearly in the front-to-rear direction, spaced upward from the top surface 12 of the metal base 11. In each reinforcing bar truss 30, the length dimensions in the front-to-back direction of the upper end bars 31 lined up in the width direction are approximately the same, and these upper end bars 31 are lined up in parallel.

[0065] The lower end bars 32 are made from elongated iron bars. Deformed metal bars (deformed reinforcing bars) with multiple nodes (ribs) on their circumferential surface are used for the lower end bars 32. The lower end bars 32 are located between adjacent convex portions 22 in the width direction (located a predetermined distance inward from the convex portions 22) and are located below (directly below) the upper end bars 31. The lower end bars 32 extend linearly in the front-to-rear direction, spaced a predetermined distance upward from the upper surface 12 of the metal base 11. The length dimension in the front-to-rear direction of the lower end bars 32 lined up in the width direction in each reinforcing bar truss 30 is approximately the same, and these lower end bars 32 are lined up in parallel.

[0066] The lattice reinforcement 33 is made of elongated iron rods. The lattice reinforcement 33 is located between adjacent convex portions 22 in the width direction (located at a predetermined distance inward from the convex portions 22) and between the upper end reinforcement 31 and the lower end reinforcement 32. The lattice reinforcement 33 extends in the front-to-rear direction, repeatedly bending (undulating) in a wavy manner in the up-and-down direction between the upper end reinforcement 31 and the lower end reinforcement 32. The lattice reinforcement 33 has an upper end convex portion located on the upper end reinforcement 31 side, which forms an arc convex upward, a lower end concave portion located on the lower end reinforcement 32 side, which forms an arc concave downward, and an intermediate portion extending at an angle in the front-to-rear direction between the upper end convex portion and the lower end concave portion. The angle at which the lattice reinforcement 33 bends in a wavy manner in the up-and-down direction (the number of times the lattice reinforcement 33 bends in a wavy manner in the up-and-down direction per unit length) can be freely changed. The upper end convex portions of the lattice reinforcement 33 are in contact with the circumferential surface of the upper end reinforcement 31, and the portions of the upper end convex portions that intersect with the upper end reinforcement 31 (intersection portions) are welded (fixed) to the upper end reinforcement 31 by spot welding. The lower end concave portions of the lattice reinforcement 33 are in contact with the circumferential surface of the lower end reinforcement 32, and the portions of the lower end concave portions that intersect with the lower end reinforcement 32 (intersection portions) are welded (fixed) to the lower end reinforcement 32 by spot welding.

[0067] The connecting bars 34 extend in the width direction, repeatedly bending (undulating) in a wave-like pattern in the vertical direction. Each connecting bar 34 has an upper end that abuts the circumferential surface of the upper end bars 31 so as to straddle the upper end bars 31; a lower end that is bent outward in the width direction so as to be parallel to the upper surface 12 of the metal base 11; and an intermediate portion that extends in the vertical direction between the upper and lower ends. The upper end of the connecting bar 34 is welded (fixed) to the upper end bars 31 by spot welding at the portion where it abuts the circumferential surface of the upper end bars 31 (abutment portion). The lower end of the connecting bar 34 is welded and fixed (joined) to the protrusion 22 of the metal base 11 by spot welding at the portion where it abuts (abutment portion) to the protrusion 22. L-shaped end members 35 made of steel bars are installed and fixed to the edge portions 17 (one end and the other end) of the steel truss deck plate 10C. The end member 35 is welded and fixed (joined) to the upper end reinforcing bars 31 and the lower end reinforcing bars 32 by spot welding at the points where it intersects with the upper end reinforcing bars 31 and the lower end reinforcing bars 32 (intersecting portions).

[0068] There are no particular restrictions on the thickness of the upper end reinforcement 31, lower end reinforcement 32, lattice reinforcement 33, and connecting reinforcement 34, and the thickness of the upper end reinforcement 31, lower end reinforcement 32, lattice reinforcement 33, and connecting reinforcement 34 can be freely changed according to the size of the ceiling slab to be constructed and the amount of rebar required for the ceiling slab. The upper end reinforcement 31, lower end reinforcement 32, lattice reinforcement 33, connecting reinforcement 34, and end member 35 are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 31, lower end reinforcement 32, lattice reinforcement 33, connecting reinforcement 34, and end member 35 are made of iron, they may be subjected to an anti-rust treatment such as plating.

[0069] The ceiling finishing material 15 is joined by a predetermined joining means to the underside 14 of the metal base 11, which is exposed to the inside of the building. In the reinforcing steel deck plate 10C, the decorative surface 26 of the ceiling finishing material 15 forms the ceiling surface of the building. The ceiling finishing material 15 is made of at least one of the following materials: wallpaper of a predetermined area that extends flatly in the front-to-back and width directions; plywood of a predetermined area that extends flatly in the front-to-back and width directions; siding material of a predetermined area that extends flatly in the front-to-back and width directions; and wood of a predetermined area that extends flatly in the front-to-back and width directions. The wallpaper, plywood, siding material, and wood are the same as those in the reinforcing steel deck plate 10A, and the joining means for joining the wallpaper, plywood, siding material, and wood to the metal base 11 are the same as those in the reinforcing steel deck plate 10A. It is sufficient that wallpaper, plywood, siding material, or wood is joined to the lower surface 14 of the metal base 11 by a predetermined joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0070] Fig. 13 is a perspective view of a reinforcing steel deck plate 10D as another example, and Fig. 14 is a front view of the reinforcing steel deck plate 10D of Fig. 13. Fig. 15 is a side view of the reinforcing steel deck plate 10D of Fig. 13. One edge 17 of the reinforcing steel deck plate 10D is not shown in Figs. 13 and 15. Fig. 13 illustrates a state in which the first and second engagement portions 18, 19 shown in Fig. 1 are formed on the side edge 16 of the metal base 11, but the first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on the side edge 16 of the metal base 11. Furthermore, a first hook (first engagement portion) bent toward one of the upper surface 12 side and the lower surface 14 side may be formed on one side edge portion 16 of the metal base 11 of the reinforced deck plate 10D, and a second hook (second engagement portion) bent toward the other of the upper surface 12 side and the lower surface 14 side may be formed on the other side edge portion 16 of the metal base 11.

[0071] This reinforcing steel deck plate 10D differs from that shown in Figure 10 in that a base material 28 is joined to the underside 14 of the metal base 11, and a ceiling finishing material 15 is joined to the underside 29 of the base material 28.The rest of the configuration is the same as that of the reinforcing steel deck plate 10C shown in Figure 10, so the same symbols as in Figure 10 are used and the description of the reinforcing steel deck plate 10C shown in Figure 10 is used, and detailed descriptions of the other configurations of this reinforcing steel deck plate 10D will be omitted.

[0072] The reinforcing steel deck 10D is composed of a metal base 11 that is long in the front-to-rear direction and has a predetermined area, reinforcing steel trusses 30 (reinforcing steel) installed on the upper surface 12 of the metal base 11, a base material 28 of a predetermined area joined (fixed) to the underside 14 of the metal base 11 that faces the inside of the building, and a ceiling finish material 15 of a predetermined area joined (fixed) to the underside 29 of the base material 28 that faces the inside of the building. The metal base 11 and reinforcing steel trusses 30 (one upper end bar 31, one lower end bar 32, one lattice bar 33, multiple connecting bars 34 connecting the reinforcing steel trusses 30, and end members 35) are the same as those of the reinforcing steel deck 10C in Figure 10. The first and second engaging portions 18 and 19 formed on both side edges 16 of the metal base 11 are the same as those of the reinforcing steel deck 10A in Figure 1.

[0073] In the reinforcing bar deck plate 10D, a base material 28 (plywood (ordinary plywood), plasterboard, or wood with a thickness of 0.5 mm to 3 cm) of a predetermined area that extends flatly in the front-to-rear and width directions is joined (fixed) to the underside 14 of the metal base 11 by the same joining means as for the reinforcing bar deck plate 10B. The base material 28 conceals the entire underside 14 of the metal base 11. It is sufficient that the base material 28 is joined to the underside 14 of the metal base 11 by a predetermined joining means (at least one of adhesive, staples, bolts, and rivets).

[0074] In the reinforcing steel deck plate 10D, the ceiling finish material 15 is joined by a predetermined joining means to the underside 29 of the base material 28, which is exposed inside the building, and the decorative surface 26 of the ceiling finish material 15 forms the ceiling surface of the building. The ceiling finish material 15 is made of at least one of the following: wallpaper of a predetermined area that extends flatly in the front-to-back and width directions; plywood of a predetermined area that extends flatly in the front-to-back and width directions; siding material of a predetermined area that extends flatly in the front-to-back and width directions; wood of a predetermined area that extends flatly in the front-to-back and width directions; and tile material arranged in the front-to-back and width directions. The wallpaper, plywood, siding material, wood, and tile material are joined to the underside 29 of the base material 28 by the same joining means as the reinforcing steel deck plate 10B. The wallpaper, plywood, siding, and wood are the same as those used for the reinforcing steel deck plate 10A. The tile material is the same as that used for the reinforcing steel deck plate 10B. The wallpaper, plywood, siding, wood, and tile material conceal the entire underside 14 of the metal base 11 (the entire underside 29 of the base material 28), while the decorative surface 26 exposed to the inside of the steel-reinforced concrete building, reinforced steel-framed concrete building, or reinforced steel-framed concrete building forms the ceiling surface of the building. The wallpaper, plywood, siding, wood, and tile material may be joined to the underside 29 of the base material 28 by a predetermined joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0075] Fig. 16 is a perspective view of a reinforcing steel deck plate 10E as another example, and Fig. 17 is a front view of the reinforcing steel deck plate 10E of Fig. 16. Fig. 18 is a side view of the reinforcing steel deck plate 10E of Fig. 16. One edge 17 of the reinforcing steel deck plate 10E is not shown in Figs. 16 and 17. In Fig. 16, the front-to-rear direction is indicated by arrow A, the width direction is indicated by arrow B, and the up-down direction is indicated by arrow C. Fig. 16 illustrates a state in which the first and second engagement portions 18, 19 shown in Fig. 1 are formed on the side edge 16 of the metal base 11, but the first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on the side edge 16 of the metal base 11. Furthermore, a first hook (first engagement portion) bent toward one of the upper surface 12 side and the lower surface 14 side may be formed on one side edge portion 16 of the metal base 11 of the reinforced concrete deck plate 10E, and a second hook (second engagement portion) bent toward the other of the upper surface 12 side and the lower surface 14 side may be formed on the other side edge portion 16 of the metal base 11.

[0076] The reinforcing steel deck plate 10E is formed from a metal base 11 that is long in the front-to-rear direction and has a predetermined area, reinforcing steel trusses 36 (reinforcing bars) installed on the upper surface 12 of the metal base 11, and a ceiling finish material 15 of a predetermined area that is fixed to the underside 14 of the metal base 11 that is exposed inside the building. The metal base 11 and the first and second engagement portions 18 and 19 formed on both side edges 16 of the metal base 11 are the same as those of the reinforcing steel deck plate 10A in Figure 1. In Figure 15, three reinforcing steel trusses 36 are installed on the metal base 11, but there is no particular limit to the number of reinforcing steel trusses 36; one, two, or four or more reinforcing steel trusses 36 may be installed on the metal base 11 depending on the size of the ceiling slab to be constructed and the amount of reinforcing steel required, etc.

[0077] These reinforcing bar trusses 36 are arranged between the side edges 16 of the metal base 11, spaced apart at equal intervals (predetermined intervals) in the width direction, and extend in the front-to-rear direction from one edge 17 to the other edge 17. Each reinforcing bar truss 36 is assembled from one upper end bar 37 and one lattice bar 38. The upper end bar 37 is made of an elongated iron rod. The upper end bar 37 is a deformed iron bar (deformed reinforcing bar) with multiple nodes (ribs) on its periphery. The upper end bar 37 is located between the protruding portions 22 (ribs) of adjacent metal bases 11 in the width direction and extends straight in the front-to-rear direction, spaced apart upward from the top surface 12 of the metal base 11. The front-to-rear length dimension of the upper end bars 37 arranged in the width direction in each reinforcing bar truss 36 is approximately the same, and the upper end bars 37 are arranged parallel to each other.

[0078] The lattice reinforcement 38 is made from elongated iron rods. The lattice reinforcement 38 is located between adjacent convex portions 22 in the width direction (located a predetermined distance inward from the convex portions 22), and is also located between the upper end reinforcement 37 and the upper surface 12 of the metal base 11. The lattice reinforcement 38 extends in the front-to-rear direction while repeatedly bending (undulating) in a wavy manner in the up-and-down direction between the upper end reinforcement 37 and the upper surface 12 of the metal base 11. The lattice reinforcement 38 has an upper end convex portion located on the side of the upper end reinforcement 37 and forming an arc that is convex upward, a lower end concave portion located on the side of the upper surface 12 of the metal base 11 and forming an arc that is concave downward, and an intermediate portion that extends at an angle in the front-to-rear direction between the upper end convex portion and the lower end concave portion.

[0079] The lattice reinforcement 38 has an intermediate portion extending diagonally downward (downward gradient) from the upper end convex portion toward one of the convex portions 22 (ribs), with the lower end concave portion abutting against one of the convex portions 22, and an intermediate portion extending diagonally upward (upward gradient) from the lower end concave portion abutting against one of the convex portions 22 toward the upper end reeds 37, with the upper end convex portion abutting against the upper end reeds 38. Furthermore, the intermediate portion extends diagonally downward (downward gradient) from the upper end convex portion toward the other convex portion 22 (rib), with the lower end concave portion abutting against the other convex portion 22, and an intermediate portion extends diagonally upward (upward gradient) from the lower end concave portion abutting against the other convex portion 22 toward the upper end reeds 37, with the upper end convex portion abutting against the upper end reeds 37. As shown in Figure 16, the lattice reinforcement 38 is not perpendicular to the upper surface 12 of the metal base 11, but is inclined at a predetermined angle to the upper surface 12 of the metal base 11, and widens outward in the width direction from the upper end convex portion toward the upper surface 12 of the metal base 11.

[0080] The angle at which the lattice reinforcement 38 repeatedly bends in a wave-like manner in the vertical direction (the number of times the lattice reinforcement 38 repeatedly bends in a wave-like manner in the vertical direction per unit length) can be freely changed. There are no particular restrictions on the inclination angle of the lattice reinforcement 38 relative to the metal base 11, and the inclination angle can be freely changed. The upper convex portion of the lattice reinforcement 38 abuts against the lower peripheral surface of the upper end reinforcement 37, and the portion of the upper end convex portion that intersects with the upper end reinforcement 37 (intersection portion) is welded (fixed) to the upper end reinforcement 37 by spot welding. The lower end concave portion of the lattice reinforcement 38 abuts against the upper surface 11 of the metal base 12 and the side surface of the convex portion 22 (rib), and the portion of the lower end concave portion that intersects with the convex portion 22 (intersection portion) is welded (fixed) to the convex portion 22 by spot welding.

[0081] An inverted U-shaped end member 39 made of steel rods is attached and fixed to the edge portion 17 (one end and the other end) of the deck plate 10E with steel trusses. The end member 39 is welded and fixed (joined) to the upper end reinforcement 37 and the protrusion 22 of the metal base 11 at the intersection (intersection). There are no particular restrictions on the thickness of the upper end reinforcement 37 or the lattice reinforcement 38, and the thickness of the upper end reinforcement 37 or the lattice reinforcement 38 can be freely changed depending on the size of the ceiling slab to be constructed and the amount of rebar required for the ceiling slab. The upper end reinforcement 37, the lattice reinforcement 38, and the end member 39 are made of iron, but they can also be made of metals other than iron. Furthermore, if the upper end reinforcement 37, the lattice reinforcement 38, and the end member 39 are made of iron, they may be treated with an anti-rust treatment such as plating.

[0082] The ceiling finishing material 15 is joined by a predetermined joining means to the underside 14 of the metal base 11, which is exposed to the inside of the building. In the reinforcing steel deck plate 10E, the decorative surface 26 of the ceiling finishing material 15 forms the ceiling surface of the building. The ceiling finishing material 15 uses at least one of the following materials: wallpaper of a predetermined area that extends flatly in the front-to-back and width directions; plywood of a predetermined area that extends flatly in the front-to-back and width directions; siding material of a predetermined area that extends flatly in the front-to-back and width directions; and wood of a predetermined area that extends flatly in the front-to-back and width directions. The wallpaper, plywood, siding material, and wood are the same as those in the reinforcing steel deck plate 10A, and the joining means for joining the wallpaper, plywood, siding material, and wood to the metal base 11 are the same as those in the reinforcing steel deck plate 10A. It is sufficient that wallpaper, plywood, siding material, or wood is joined to the lower surface 14 of the metal base 11 by a predetermined joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0083] Fig. 19 is a perspective view of a reinforcing steel deck plate 10F as another example, and Fig. 20 is a front view of the reinforcing steel deck plate 10F of Fig. 19. Fig. 21 is a side view of the reinforcing steel deck plate 10F of Fig. 19. One edge 17 of the reinforcing steel deck plate 10F is not shown in Figs. 19 and 21. Fig. 18 illustrates a state in which the first and second engagement portions 18, 19 shown in Fig. 1 are formed on the side edge 16 of the metal base 11, but the first and second engagement portions 20, 21 shown in Fig. 5 may also be formed on the side edge 16 of the metal base 11. Furthermore, a first hook (first engagement portion) bent toward one of the upper surface 12 side and the lower surface 14 side may be formed on one side edge portion 16 of the metal base 11 of the reinforced concrete deck plate 10F, and a second hook (second engagement portion) bent toward the other of the upper surface 12 side and the lower surface 14 side may be formed on the other side edge portion 16 of the metal base 11.

[0084] This reinforcing steel deck plate 10F differs from that shown in Figure 15 in that a base material 28 is joined to the underside 14 of the metal base 11, and a ceiling finishing material 15 is joined to the underside 29 of the base material 28; the rest of the configuration is the same as that of the reinforcing steel deck plate 10E shown in Figure 15, so the same symbols as in Figure 15 are used and the description of the reinforcing steel deck plate 10E shown in Figure 15 is used, and detailed descriptions of the other configurations of this reinforcing steel deck plate 10F will be omitted.

[0085] The reinforcing steel deck plate 10F is composed of a metal base 11 that is long in the front-to-rear direction and has a predetermined area, a reinforcing steel truss 36 (reinforcing steel) installed on the top surface of the metal base 11, a base material 28 of a predetermined area joined (fixed) to the underside 14 of the metal base 11 that faces the inside of the building, and a ceiling finish material 15 of a predetermined area joined (fixed) to the underside 29 of the base material 28 that faces the inside of the building. The metal base 11 and the reinforcing steel truss 36 (one upper end bar 37, one lattice bar 38, and end member 39) are the same as those of the reinforcing steel deck plate 10E in Figure 15. The first and second engagement portions 18 and 19 formed on both side edges 16 of the metal base 11 are the same as those of the reinforcing steel deck plate 10A in Figure 1.

[0086] In the reinforcing steel deck plate 10F, a base material 28 (plywood (ordinary plywood), plasterboard, or wood with a thickness of 0.5 mm to 3 cm) of a predetermined area that extends flatly in the front-to-rear and width directions is joined (fixed) to the underside 14 of the metal base 11 by the same joining means as that used for the reinforcing steel deck plate 10B. The base material 28 conceals the entire underside 14 of the metal base 11. It is sufficient that the base material 28 is joined to the underside 14 of the metal base 11 by a predetermined joining means (at least one of adhesive, staples, bolts, and rivets).

[0087] In the rebar-equipped deck plate 10F, the ceiling finish material 15 is joined to the underside 29 of the base material 28, which is exposed inside the building, by a predetermined joining method, and the decorative surface 26 of the ceiling finish material 15 forms the ceiling surface of the building. The ceiling finish material 15 is made of at least one of the following materials: wallpaper of a predetermined area extending flatly in the front-to-back and width directions; plywood of a predetermined area extending flatly in the front-to-back and width directions; siding material of a predetermined area extending flatly in the front-to-back and width directions; wood of a predetermined area extending flatly in the front-to-back and width directions; and tile material arranged in the front-to-back and width directions. The wallpaper, plywood, siding material, wood, and tile material are joined to the underside 29 of the base material 28 by the same joining method as the rebar-equipped deck plate 10B. The wallpaper, plywood, siding material, and wood are the same as those of the rebar-equipped deck plate 10A. The tile material is the same as that of the rebar-equipped deck plate 10B. The wallpaper, plywood, siding, and tile materials conceal the entire underside 14 of the metal base 11 (the entire underside 29 of the base material 28), while the decorative surface 26 exposed to the inside of the building forms the ceiling surface of the building. Note that the wallpaper, plywood, siding, wood, and tile materials only need to be joined to the underside 29 of the base material 28 by a predetermined joining means (at least one of adhesive, staples, nails, bolts, and rivets).

[0088] In the reinforced concrete deck plate 10A of Figure 1, the reinforced concrete deck plate 10C of Figure 10, and the reinforced concrete deck plate 10E of Figure 15, the decorative surface 26 of at least one ceiling finishing material 15 selected from wallpaper, plywood, siding material, and wood joined (fixed) to the underside 14 of the metal base 11 forms the ceiling surface of the ceiling slab, and the decorative surface 26 of the wallpaper, plywood, siding material, or wood is exposed to the inside (below) of the reinforced concrete building, reinforced concrete building, or reinforced steel-framed concrete building as the ceiling surface of the ceiling slab, so that the side of the underside 14 of the metal base 11 exposed to the inside (below) of these buildings can be seen well, and the side of the underside 14 of the metal base 11 (wallpaper, plywood, siding material, wood) can be used as a ceiling surface with a good appearance as it is.

[0089] Reinforced deck plates 10A, 10C, and 10E have at least one of wallpaper, plywood, siding, and wood joined (fixed) to the entire underside 14 of metal base 11, and the wallpaper, plywood, siding, or wood forms the ceiling surface of the ceiling slab of a steel-reinforced building, a steel-reinforced concrete building, or a steel-reinforced concrete building, so that the wallpaper, plywood, siding, or wood can be used as ceiling finish material 15. Reinforced deck plates 10A, 10C, and 10E have decorative surface 26 of the wallpaper, plywood, siding, or wood joined (fixed) to underside 14 of metal base 11 form the ceiling surface, so that a ceiling slab can be constructed using suspension bolts without attaching ceiling finish materials such as decorative plywood, gypsum board, or aluminum panels, eliminating the need for separate ceiling finishing work to install the ceiling finish material and reducing the effort and cost required for ceiling finishing work.

[0090] Because reinforcing steel deck plates 10A, 10C, and 10E do not require the use of suspension bolts to attach ceiling finish materials such as decorative plywood, gypsum board, and aluminum panels, they can be used to construct a ceiling slab that eliminates the risk of wallpaper, plywood, siding, or wood falling, making it possible to prevent ceiling collapse accidents, compared to suspended ceiling structures that use suspension bolts to attach ceiling finish materials. By selecting from a variety of wallpapers, plywood, siding, and wood, reinforcing steel deck plates 10A, 10C, and 10E, you can create a ceiling surface that exposes the desired wallpaper, plywood, siding, or wood, and you can easily recreate the desired ceiling surface by replacing old wallpaper, plywood, siding, or wood with the desired new wallpaper, plywood, siding, or wood.

[0091] In the reinforcing steel deck plate 10B of Figure 8, the reinforcing steel deck plate 10D of Figure 13, and the reinforcing steel deck plate 10F of Figure 18, the base material 28 is joined (fixed) to the underside 14 of the metal base 11 by joining means, and the decorative surface 26 of at least one ceiling finishing material 15 selected from wallpaper, plywood, siding, wood, and tile material joined to the underside 29 of the base material 28 by joining means forms the ceiling surface of the steel-reinforced concrete building, reinforced steel-framed concrete building, and the wallpaper, plywood, siding, wood, and tile material are exposed inside (below) the building as the ceiling surface of the ceiling slab, so that the side of the underside 14 of the metal base 11 exposed inside (below) the building can be seen to have a good appearance, and the side of the underside 14 of the metal base 11 (wallpaper, plywood, siding, wood, tile material) can be used as a ceiling surface with a good appearance as it is.

[0092] In the reinforced deck plates 10B, 10D, and 10F, at least one of wallpaper, plywood, siding, wood, and tile material is joined (fixed) to the entire inner surface 29 of the base material 28 (the entire underside 14 of the metal base 11), and the wallpaper, plywood, siding, wood, and tile material form the ceiling surface of the ceiling slab of a reinforced concrete building, a reinforced steel-framed concrete building, or a reinforced steel-framed concrete building, so that the wallpaper, plywood, siding, wood, and tile material can be used as the ceiling finishing material 15. In the reinforced deck plates 10B, 10D, and 10F, the decorative surface 26 of wallpaper, plywood, siding, wood, or tile material joined (fixed) to the underside 29 of the base material 28 forms the ceiling surface, so a ceiling slab can be constructed 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 to install the ceiling finishing materials separately and saving the effort and cost required for ceiling finishing work.

[0093] Because reinforcing steel deck plates 10B, 10D, and 10F do not require the use of suspension bolts to attach ceiling finish materials such as decorative plywood, gypsum board, and aluminum panels, they can be used to construct a ceiling slab that eliminates the risk of underlayment, wallpaper, plywood, siding, wood, and tile falling, preventing ceiling collapse accidents, compared to suspended ceiling structures that use suspension bolts to attach ceiling finish materials. By selecting from a variety of wallpapers, plywood, siding, wood, and tile materials, reinforcing steel deck plates 10B, 10D, and 10F allows users to create their desired ceiling surface by exposing the desired wallpaper, plywood, siding, wood, or tile, and also allows users to easily redesign the ceiling surface by replacing old wallpaper, plywood, siding, wood, or tile with the desired new wallpaper, plywood, siding, wood, or tile.

[0094] The reinforcing steel deck plates 10A to 10F are made of various types of cloth with different patterns, designs, colors (hues), textures, glosses, thickness dimensions, etc. of the decorative surface 26, various types of plywood with different patterns, designs, colors (hues), textures, glosses, thickness dimensions, etc. of the decorative surface 26, various types of siding materials with different patterns, designs, colors (hues), textures, glosses, thickness dimensions, etc. of the decorative surface 26, various types of wood with different patterns (wood grains), thickness dimensions, etc. of the decorative surface 26, various types of wood with different patterns, designs, colors (hues), textures, glosses, thickness dimensions, etc. of the decorative surface 26, A desired one can be selected from various tile materials having different shapes such as thickness dimensions, and a desired ceiling surface can be created in which the desired wallpaper, plywood, siding material, wood, and tile material are exposed, and by replacing the wallpaper, plywood, siding material, wood, and tile material, the old wallpaper, plywood, siding material, wood, and tile material can be replaced with the desired new wallpaper, plywood, siding material, wood, and tile material, and the desired ceiling surface can be easily remade.

[0095] In the reinforced deck plates 10A to 10F, wallpaper, plywood, siding, wood, and tile materials are joined (fixed) to the metal base 11 and the base material 28 using at least one of adhesives, staples, nails, bolts, and rivets, and the base material 28 is joined (fixed) to the metal base 11.This means that various types of wallpaper, plywood, siding, wood, and tile materials can be easily joined, and the base material 28 can be firmly bonded to the metal base 11.In addition, the wallpaper, plywood, siding, wood, and tile materials can be firmly bonded to the base material 28, which reliably prevents the wallpaper, plywood, siding, wood, tile, and base material 28 from peeling off or falling off the metal base 11. [Explanation of symbols]

[0096] 10A Reinforced deck plate 10B Reinforced deck plate 10C Reinforced deck plate 10D Reinforced Deck Plate 10E Reinforced deck plate 10F Reinforced deck plate 11 Metal Base 12 Top side 13 Steel truss (reinforced bars) 14 Bottom side 15 Ceiling finishing materials 16 Both side edges 17 Both edges 18 First engagement portion 18a Convex part (slanted part) 19 Second engagement portion 19a 1st slope section 19b horizontal part 19c 2nd slope section 19d Entrance opening 20 First engagement portion 20a Slope section 20b Access opening 21 second engagement portion 21a Slope section 21b Intrusion part 22 Convex part (protrusion) 23 Top bar 24 Bottom reinforcement 25 Lattice Muscle 26 Decorative Surface 27 Side edge 28 Undercoat 29 Bottom side 30 Steel truss (reinforced bars) 31 Upper end reinforcement 32 Bottom reinforcement 33 Lattice muscle 34 Connecting muscles 35 End member 36 Reinforced concrete truss (reinforced concrete) 37 Upper end muscle 38 Lattice muscle 39 End member 40 staples

Claims

1. A reinforcing steel deck plate of a predetermined area having both side edges extending in the front-rear direction and both end edges extending in the width direction, The reinforcing steel deck plate comprises a metal base of a predetermined area having both side edges extending in the front-to-rear direction and both end edges extending in the width direction, at least one reinforcing steel bar installed and fixed to the upper surface of the metal base and positioned between both end edges of the metal base and extending in the front-to-rear direction, and a ceiling finishing material joined by a predetermined joining means to the underside of the metal base exposed to the inside of the building, the ceiling finishing material has both side edges extending in the front-to-rear direction parallel to both side edges of the metal base, the decorative surface of the ceiling finishing material forms the ceiling surface of the building, the metal base has a first engaging portion formed on one side edge and a second engaging portion formed on the other side edge, the first engaging portion is formed by cutting one side edge of the metal base into an uneven shape and bending it back toward the top surface of the metal base, and is a plurality of convex portions that are elastically deformable in the up-and-down direction and inclined at a predetermined angle from one side edge of the metal base toward the other side edge of the metal base, the second engaging portion is formed by a first inclined portion formed by bending the other side edge of the metal base toward the top surface of the metal base and inclining the other side edge outward in the width direction at an upward gradient; a horizontal portion extending substantially horizontally outward in the width direction from the tip of the first inclined portion and having an engagement opening extending in the front-rear direction; and a second inclined portion formed by bending the tip of the horizontal portion back toward the top surface of the metal base, In the reinforced concrete deck plate, in the process of connecting multiple deck plates in the width direction by opposing the side edges of the ceiling finishing material in the width direction, when the side edges of the ceiling finishing material are brought into contact while the convex portion and the first inclined portion elastically deform, the convex portion engages into the engagement opening of the horizontal portion, and the first engagement portion engages with the second engagement portion.

2. 2. The reinforced concrete deck plate of claim 1, wherein the ceiling finishing material is at least one of a cloth of a predetermined area extending flatly in the front-to-back direction and the width direction, a plywood of a predetermined area extending flatly in the front-to-back direction and the width direction, a siding material of a predetermined area extending flatly in the front-to-back direction and the width direction, and a wood of a predetermined area extending flatly in the front-to-back direction and the width direction, and at least one of the cloth, the plywood, the siding material, and the wood is joined to the underside of the metal base by the joining means, so that the decorative surface forms the ceiling surface of the building while concealing the entire underside of the metal base.

3. The reinforcing steel deck plate of claim 2, wherein the joining means are staples with adhesive applied to the needles, and in the reinforcing steel deck plate, at least one of the cloth, the plywood, the siding material, and the wood is joined to the underside of the metal base by a plurality of the staples driven from the top surface of the metal base.

4. The reinforced concrete deck plate of claim 3, wherein the joining means is an adhesive, and in the reinforced concrete deck plate, at least one of the cloth, the plywood, the siding material, and the wood is joined to the underside of the metal base by the adhesive.

5. 5. The reinforcing steel deck plate according to claim 4, wherein the cloth is any one of vinyl cloth, fabric cloth, glass cloth, paper wallpaper, inorganic wallpaper, wood-based wallpaper, and olefin wallpaper; the plywood is any one of high-pressure melamine decorative boards, low-pressure melamine decorative boards, veneer decorative boards, olefin decorative boards, polyester decorative boards, printed decorative boards, DAP decorative boards, and PVC decorative boards; the siding material is any one of metal siding, ceramic siding, wood-based siding, and resin-based siding; the wood is any one of softwood and hardwood; and the joining means includes at least one of nails, bolts, and rivets in addition to the adhesive and staples, or at least one of nails, bolts, and rivets is used in addition to the adhesive and staples.

6. 2. The reinforced concrete deck plate of claim 1, wherein the ceiling finishing material is at least one of a cloth having a predetermined area extending flatly in the front-to-rear direction and the width direction, a plywood having a predetermined area extending flatly in the front-to-rear direction and the width direction, a siding material having a predetermined area extending flatly in the front-to-rear direction and the width direction, a wood piece having a predetermined area extending flatly in the front-to-rear direction and the width direction, and tile material arranged in the front-to-rear direction and the width direction, and the base material having a predetermined area extending flatly in the front-to-rear direction and the width direction is joined to the underside of the metal base by the joining means, and at least one of the cloth, the plywood, the siding material, the wood, and the tile material is joined to the underside of the base material by the joining means, thereby concealing the entire underside of the metal base and forming a decorative surface of the base material to form the ceiling surface of the building.

7. The reinforcing steel deck plate of claim 6, wherein the joining means are staples with adhesive applied to the needles, and in the reinforcing steel deck plate, the base material is joined to the underside of the metal base by a plurality of the staples driven from the top surface of the metal base, and at least one of the cloth, the plywood, the siding material, and the wood is joined to the underside of the base material by a plurality of the staples driven from the top surface of the metal base.

8. The reinforcing steel deck plate of claim 7, wherein the joining means is an adhesive, and in the reinforcing steel deck plate, the base material is joined to the underside of the metal base by the adhesive, and at least one of the cloth, plywood, siding material, wood, and tile material is joined to the underside of the base material by the adhesive.

9. 9. The reinforcing steel deck plate according to claim 8, wherein the cloth is any one of vinyl cloth, fabric cloth, glass cloth, paper wallpaper, inorganic wallpaper, wood-based wallpaper, and olefin wallpaper; the plywood is any one of high-pressure melamine decorative boards, low-pressure melamine decorative boards, veneer decorative boards, olefin decorative boards, polyester decorative boards, printed decorative boards, DAP decorative boards, and PVC decorative boards; the siding material is any one of metal siding, ceramic siding, wood-based siding, and resin siding; the wood is any one of softwood and hardwood; the tile material is any one of porcelain tile, stoneware tile, and ceramic tile; and the joining means includes at least one of nails, bolts, and rivets in addition to the adhesive and the staples, or at least one of nails, bolts, and rivets is used together with the adhesive and the staples.

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