Buildings and methods of constructing buildings

Abstract

This building (1) comprises a foundation (2), a main building part (3) that is provided to the foundation (2) and that has a framework structure, and a roof (4) that is provided to the main building part (3) and that has a truss structure. Moreover, a method for constructing the building (1) includes: a first step for forming the foundation (2); a second step for creating the main building part (3) having a framework structure on the foundation (2); and a third step for attaching, to the main building part, a roof frame (80) having a pre-assembled truss structure.

Description

[Technical field]

[0001] The present invention relates to a building and a method for constructing a building. [Background technology]

[0002] Patent Document 1 discloses a building having a roof with a truss structure. The roof with the truss structure is attached to frame materials (called wall studs in the document) that constitute the walls. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Pat. No. 4,073,109 Summary of the Invention [Problem to be solved by the invention]

[0004] In a building, when the earthquake resistance is to be increased, reinforcing members are attached to the cross members or walls. However, the work of attaching reinforcing members to the cross members or walls of a building is time-consuming and reduces the efficiency of construction. Therefore, we provide a building and a method of constructing a building that can reduce the number of reinforcing members. [Means for solving the problem]

[0005] (1) A building that solves the problem includes a foundation, a building body having a frame structure attached to the foundation, and a roof having a truss structure attached to the building body. According to this configuration, by attaching a roof with a truss structure to the main body of the building with a frame structure, the upper part of the main body of the building is less likely to be distorted by shaking of the ground, and the distortion of the entire building is suppressed. Therefore, the number of reinforcing members provided on the main body of the building can be reduced.

[0006] (2) In the building described in (1), the building body comprises a plurality of vertical members, a plurality of first cross members arranged to span the plurality of vertical members, and a second cross member arranged to cross the first cross members and span the plurality of first cross members, the roof comprises a plurality of roof frames fixed to the first cross members or the second cross members by metal fittings, the roof frame has a roof member spanned by two of the first cross members or two of the second cross members, a plurality of rafters connected to the roof member, and a reinforcing member arranged to form a truss structure within a frame formed by the roof member and the plurality of rafters, and the roof frame is fixed to the first cross member or the second cross member by metal fittings.

[0007] According to this configuration, the roof frame connects two structures including the first cross member to each other. Alternatively, the roof frame connects two structures including the second cross member to each other. This suppresses distortion of the entire building due to shaking of the ground.

[0008] (3) In the building described in (2), one or more frame members are provided between two of the vertical members. With this configuration, the wall composed of the vertical members can be reinforced.

[0009] (4) In the building described in (3), the frame members are made of multiple dimensioned timbers having a cross-sectional area smaller than that of the vertical members, the first horizontal member, and the second horizontal member. This configuration reduces the cost of the frame members.

[0010] (5) A method for constructing a building that solves the problems includes a first step of forming a foundation, a second step of constructing a building body of a frame structure on the foundation, and a third step of attaching a preassembled roof frame of a truss structure to the building body. With this configuration, since the roof frame is preassembled, the amount of work at the construction site can be reduced, and the construction period can be shortened. Effect of the Invention

[0011] According to the above-mentioned building, the number of reinforcing members can be reduced. [Brief description of the drawings]

[0012] [Figure 1] Schematic diagram of a building. [Diagram 2] An oblique view of the skeleton of the building body. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] FIG. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] Perspective view of the roof. [Figure 11] Side view of the roof frame. [Figure 12] FIG. 4 is a perspective view of the joint between the roof frame and the roof beam. [Figure 13] FIG. 4 is a perspective view of the joint between the roof frame and the roof beam. [Figure 14] FIG. 4 is a perspective view of the joint between the roof frame and the roof beam. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] A building will be described with reference to Figs. 1 to 14. The building shown in this embodiment is two-story. Fig. 2 shows the framework of the first floor of the building 1. In Fig. 2, the illustration of reinforcing members 63 in the floor section 60 between the first and second floors is omitted.

[0014] As shown in Fig. 1, a building 1 includes a foundation 2, a building body 3, and a roof 4. The building 1 shown in this embodiment includes multiple floors. The foundation 2 is provided on the ground. For example, the foundation 2 is made of reinforced concrete. The building body 3 is provided on the foundation 2.

[0015] As shown in Fig. 2, the building body 3 has a frame structure. Specifically, the building body 3 includes a plurality of vertical members 10, a plurality of first horizontal members 11, and a plurality of second horizontal members 12. The vertical members 10 are also called pillars. The vertical members 10 are made of wood. The vertical members 10 are erected on the foundation 2 via foundation metal fittings 20.

[0016] The vertical member 10 may have a length that spans multiple floors. The vertical member 10 may have a length equivalent to the height of one floor. A slit 10c is provided on the lower end surface of the vertical member 10 into which the plate portion 23 of the foundation metal fitting 20 is inserted. The slit 10c is provided so as to extend from the end surface 10a of the vertical member 10 in the longitudinal direction of the vertical member 10. As a result, the inner surface constituting the slit 10c is arranged so as to follow the grain of the vertical member 10, and the strength reduction of the portion branched by the slit 10c can be suppressed. The slits 11c and 12b described later have a similar structure. That is, the slits 11c and 12b extend in the longitudinal direction of the member from the end surface perpendicular to the longitudinal direction of the member in which the slits 11c and 12b are provided.

[0017] 3, the foundation metal fitting 20 comprises a fixed portion 21 fixed to the foundation 2, a receiving portion 22 provided above the fixed portion 21, and a plate portion 23 extending upward from the receiving portion 22. The receiving portion 22 receives the end face 10a of the vertical member 10. The fixed portion 21 of the foundation metal fitting 20 is fixed to the foundation 2 with a bolt. The plate portion 23 of the foundation metal fitting 20 is fixed to the vertical member 10 with a drift pin 24. The drift pin 24 is inserted into the vertical member 10 so that it penetrates the plate portion 23 and the vertical member 10 when placed in a slit in the vertical member 10.

[0018] The first horizontal member 11 is arranged to span multiple vertical members 10. The first horizontal member 11 is called a beam or girder. In one example, the first horizontal member 11 is arranged so that the side surface 11b of the first horizontal member 11 contacts the end surface 10a of the vertical member 10 (see FIG. 4). In another example, the first horizontal member 11 is arranged so that the end surface of the first horizontal member 11 contacts the side surface 10b of the vertical member 10. In yet another example, the first horizontal member 11 is arranged so that the end surface of the first horizontal member 11 contacts the side surface of the second horizontal member 12.

[0019] The second cross member 12 is arranged to intersect with the first cross member 11. The second cross member 12 is arranged to span a plurality of first cross members 11. The second cross member 12 is called a beam or girder. In one example, the second cross member 12 is arranged so that an end face 12a of the second cross member 12 contacts a side face 11b of the first cross member 11 (see FIG. 5). In another example, the second cross member 12 is arranged so that an end face 12a of the second cross member 12 contacts a side face 10b of the vertical member 10.

[0020] Each pair of the vertical member 10 and the first horizontal member 11, the first horizontal member 11 and the second horizontal member 12, and the vertical member 10 and the second horizontal member 12 are connected by a connecting metal fitting. As examples of the connecting metal fittings, the first connecting metal fitting 30 to the third connecting metal fitting 40 will be described.

[0021] 4, the first connecting fitting 30 connects the vertical member 10 and the first horizontal member 11. The first connecting fitting 30 may connect the vertical member 10 and the second horizontal member 12. The first connecting fitting 30 includes a tenon projection 31 and a plate portion 32 provided on the tenon projection 31. The tenon projection 31 is configured to fit into a mortise hole 11d provided in the first cross member 11. The plate portion 32 is configured to enter a slit 10c provided in the vertical member 10. The tenon projection 31 is fixed to the first cross member 11 by a drift pin 24. The plate portion 32 is fixed to the vertical member 10 by the drift pin 24.

[0022] 5, the second connecting metal fitting 36 connects the second horizontal member 12 and the vertical member 10. The second connecting metal fitting 36 may connect the second horizontal member 12 and the first horizontal member 11. The second connecting fitting 36 includes a fixing portion 37 fixed to the vertical member 10 or the first horizontal member 11, and a plate portion 38 extending from the fixing portion 37. The fixing portion 37 is fixed to the side surface 10b of the vertical member 10 or the side surface 11b of the first horizontal member 11 by a bolt. The plate portion 38 is configured to enter a slit 12b provided in the second horizontal member 12. The plate portion 38 is fixed to the second horizontal member 12 by a drift pin 24.

[0023] As shown in FIG. 6, the third connecting fitting 40 connects two vertical members 10, a first horizontal member 11, and a second horizontal member 12 arranged vertically. The third connecting fitting 40 includes a shaft portion 41 and a plurality of plate portions 42 extending from the shaft portion 41. A first end of the shaft portion 41 is configured to enter a mortise hole 10d provided in the upper vertical member 10. A second end of the shaft portion 41 is configured to enter a mortise hole 10d provided in the lower vertical member 10. The plate portion 42 is provided in the middle of the shaft portion 41. The third connecting fitting 40 has a number of plate portions 42 corresponding to the number of horizontal members to be connected to each other. The plate portion 42 is configured to enter a slit 11c of the first horizontal member 11 or a slit 12b of the second horizontal member 12. The plate portion 42 is fixed to the first horizontal member 11 or the second horizontal member 12 by a drift pin 24.

[0024] As shown in FIG. 2, the building 1 includes a frame member 50. The frame member 50 reinforces a wall having a frame structure. The wall includes two vertical members 10 and a first horizontal member 11 or a second horizontal member 12 that spans the two vertical members 10. One or more frame members 50 are provided between two of the multiple vertical members 10. Preferably, the thickness and width of the frame member 50 are equal to the thickness and width of the wall structure.

[0025] The frame member 50 is composed of a plurality of dimensioned lumber 51. The cross-sectional area of ​​the dimensioned lumber 51 is smaller than the cross-sectional area of ​​any of the vertical members 10, the first horizontal member 11, and the second horizontal member 12. The frame member 50 is composed of dimensioned lumber 51 to form a rectangular frame. The dimensioned lumber 51 is wood whose ratio of width to length is determined in the construction lumber market. In one example, the length of the dimensioned lumber 51 in cross section is twice as long as its width. The thickness width of the frame member 50 is equal to the length of the dimensioned lumber 51.

[0026] An upper portion of the frame member 50 is fixed to the first horizontal member 11 or the second horizontal member 12 by screws or bolts. Two sides of the frame member 50 are fixed to the vertical members 10 by screws or bolts. The two sides of the frame member 50 are preferably connected by a connector 52. The connector 52 is disposed between the two sides and connected to each of the two sides.

[0027] 7, the building 1 includes a floor section 60 provided between an upper floor and a lower floor. The floor section 60 is reinforced by a reinforcing member 63. The upper floor refers to the floor one floor above the lower floor. For example, the floor section 60 is provided between the first floor and the second floor. In another example, the floor section 60 is provided between the second floor and the third floor. In yet another example, the floor section 60 is provided between the first basement floor and the ground floor. In this embodiment, the building 1 has two floors. The building 1 includes the floor section 60 provided between the first floor and the second floor.

[0028] The floor section 60 comprises a plurality of first floor members 61 and a plurality of second floor members 62 arranged to intersect with the first floor members 61. The first floor members 61 correspond to one of the first horizontal member 11 and the second horizontal member 12 in the frame structure, and the second floor members 62 correspond to the other of the first horizontal member 11 and the second horizontal member 12 in the frame structure.

[0029] The first floor frame 61 and the second floor frame 62 are made of wood. A reinforcing member 63 may be disposed between the two first floor frames 61. A reinforcing member 63 may be disposed between the two second floor frames 62.

[0030] As shown in Fig. 8, the reinforcing member 63 has a plate-shaped body portion 65, an upper flange portion 66, and a lower flange portion 67. The upper flange portion 66 is formed of a plate member. The upper flange portion 66 is provided on an upper portion of the body portion 65 so as to intersect with the body portion 65. The lower flange portion 67 is formed of a plate member. The lower flange portion 67 is provided on a lower portion of the body portion 65 so as to intersect with the body portion 65.

[0031] As shown in FIG. 7, in this embodiment, the reinforcing member 63 is disposed between two second floor members 62. Each of the two second floor members 62 is provided with a support bracket 71 that supports the end of the reinforcing member 63. The reinforcing member 63 is supported by the support bracket 71 provided on each of the two second floor members 62. Specifically, each of both ends of the reinforcing member 63 is supported from below by the support bracket 71. The end of the reinforcing member 63 is placed on the support receiving portion 72 of the support bracket 71. The end of the reinforcing member 63 is not fixed to the support bracket 71. The end of the reinforcing member 63 is not fixed to the second floor member 62. The reinforcing member 63 is disposed so that the end face of the reinforcing member 63 faces the side face of the second floor member 62. A gap may be provided between the end face of the reinforcing member 63 and the side face of the second floor member 62. The reinforcing members 63 come into contact with the side surfaces of the second floor members 62 when the building main body 3 sways. This suppresses deformation of the framework structure including the first floor members 61 and the second floor members 62. Floor materials are arranged on the multiple reinforcing members 63. The reinforcing members 63 suppress deflection of the floor materials.

[0032] As shown in Fig. 8, the support bracket 71 is configured to receive the end of the reinforcing member 63. The support bracket 71 includes a support receiving portion 72 that supports a lower portion of the end of the reinforcing member 63, and fixing portions 73 extending from both ends of the support receiving portion 72. The two fixing portions 73 are fixed to the first floor frame 61 or the second floor frame 62 with screws. The spacing between the two fixing portions 73 is set so that the reinforcing member 63 can be inserted therein.

[0033] The first floor frame 61, the second floor frame 62, and the reinforcing member 63 are arranged so that the top surface of the first floor frame 61, the top surface of the second floor frame 62, and the top surface of the reinforcing member 63 form a flush plane. This makes it possible to construct a flat floor surface including the top surfaces of the first floor frame 61 and the second floor frame 62.

[0034] 9, the cross section of the reinforcing member 63 is configured to have a shape having a first portion 68 extending in the up-down direction and second portions 69 provided at both ends of the first portion 68 so as to intersect with the first portion 68. The first portion 68 corresponds to the body portion 65. The second portion 69 disposed above the first portion 68 corresponds to the upper flange portion 66. The second portion 69 disposed below the first portion 68 corresponds to the lower flange portion 67.

[0035] The roof 4 will be described with reference to Figs. 10 to 14. The roof 4 is provided on the building main body 3. The roof 4 has a truss structure. As shown in Fig. 10, the roof 4 has a plurality of roof frames 80. In this embodiment, each of the plurality of roof frames 80 has a truss structure.

[0036] The multiple roof frames 80 are arranged in parallel in the building main body 3. Preferably, the multiple roof frames 80 are arranged at equal intervals. The multiple roof frames 80 may be connected to each other by connecting members 84 (see FIG. 13).

[0037] As shown in FIG. 11, a roof frame 80 has a roof member 81, a plurality of rafters 82, and a reinforcing member 83. The roof framing member 81 is hung on two first horizontal members 11 or two second horizontal members 12. The rafters 82 are connected to the roof framing member 81. In this embodiment, the first ends of the two rafters 82 are connected to each other so as to form a corner with a predetermined angle. The second ends of the two rafters 82 are separated from each other. The first end of the roof framing member 81 is connected to the vicinity of the second end of one of the two rafters 82, and the second end of the roof framing member 81 is connected to the vicinity of the second end of the other of the two rafters 82. The roof framing member 81 and the two rafters 82 form the frame of the roof frame 80. The reinforcing member 83 is attached to the frame of the roof frame 80 so as to form a truss structure within the frame of the roof frame 80.

[0038] The roof member 81, the multiple rafters 82, and the reinforcing members 83 are preferably made of standard lumber 51. By using standard lumber 51, the thickness and width of the roof frame 80 becomes the standard thickness and width. Since the roof frame 80 has the standard thickness and width, when fixing the roof frame 80 to the two first cross members 11 or the two second cross members 12, metal fittings available on the market can be used.

[0039] The roof frame 80 is fixed to the first cross member 11 or the second cross member 12 by metal fittings. Hereinafter, the cross member of the first cross member 11 or the second cross member 12 to which the roof frame 80 is fixed is referred to as the "roof cross member 15". The roof cross member 15 to which the roof frame 80 is fixed is preferably thicker than a standard timber. In one example, the cross-sectional area of ​​the roof cross member 15 to which the roof frame 80 is fixed is larger than the cross-sectional area of ​​the standard timber. The roof cross member 15 to which the roof frame 80 is fixed may be made of a laminated timber.

[0040] As examples of the metal fittings, a first metal fitting 91 and a second metal fitting 95 will be described. The first metal fitting 91 and the second metal fitting 95 fix the roof frame 80 roof member 81 and the roof cross member 15 to each other at the portion where the roof frame 80 roof member 81 and the roof cross member 15 intersect.

[0041] 12, the first metal fitting 91 includes a fixing portion 92 and a pair of claw portions 93 that clamp the roof framing member 81. The fixing portion 92 is fixed to the roof framing member 15. The pair of claw portions 93 are provided so as to protrude from the fixing portion 92.

[0042] 13, first metal fittings 91 may fasten connecting material 84, which connects two roof frames 80, to roof cross member 15. Specifically, first metal fittings 91 are provided on roof cross member 15 at the portion where connecting material 84 and roof cross member 15 intersect, and clamp connecting material 84.

[0043] 14, the second metal fitting 95 is made of a long, thin metal plate. The second metal fitting 95 is hung so as to come into contact with the upper surface of the roof framing member 81. Both ends 96, 96 of the second metal fitting 95 are fixed to the roof framing member 15.

[0044] Explain how to build Building 1. The method for constructing the building 1 includes steps 1 to 3. In the first step, the foundation 2 is formed. In the second step, the building body 3 having a frame structure is built on the foundation 2.

[0045] In the third step, a preassembled truss-structured roof frame 80 is attached to the building main body 3. Specifically, the roof frame 80 has a plurality of rafters 82 and roof members 81. The roof frame 80 is placed on the building main body 3 so that the roof members 81 span across a plurality of roof cross members 15. The roof members 81 of the roof frame 80 are fixed to the roof cross members 15 of the building main body 3 by metal fittings.

[0046] The method for constructing the building 1 may include a fourth step. In the fourth step, a wall having a framework structure is reinforced by pre-assembled frame members 50. The work in the fourth step may be performed in the second step or in the third step. Specifically, one or more frame members 50 are fitted between two vertical members 10, and the frame members 50 are fixed to the vertical members 10 with screws.

[0047] The method for constructing the building 1 may include a fifth step. In the fifth step, the floor section 60 having a frame structure is reinforced by the reinforcing member 63. The work of the fifth step may be performed in the second step or in the third step. In one example, the support brackets 71 are attached to each of the two second floor members 62 of the floor section 60. The two support brackets 71 are arranged to face each other. The reinforcing member 63 is placed on the space between the two support brackets 71, and while lowering the reinforcing member 63, the end of the reinforcing member 63 is inserted into the support bracket 71. In this way, the reinforcing member 63 is placed between the two second floor members 62.

[0048] The operation of this embodiment will now be described. According to the conventional frame construction method, the framework of the building body 3 and the framework of the roof 4 are constructed by frame construction. The lower part of the building body 3 is fixed to the foundation 2. The roof 4 is provided on the upper part of the building body 3. Due to this structure, when the building body 3 shakes, the deformation of the upper part of the building body 3 may be greater than that of the lower part of the building body 3. In order to suppress the deformation of the upper part of the building body 3 due to shaking, a reinforcing member (also called a "flint") is provided at the corner of the intersecting first horizontal member 11 and second horizontal member 12 at the upper part of the building body 3. Alternatively, a reinforcing member (also called a "bracing") may be provided between the two vertical members 10 supporting the roof 4, intersecting the two vertical members 10 at an angle. Providing such a reinforcing member is time-consuming and may be a factor in extending the construction period.

[0049] In the building 1 of this embodiment, the roof 4 has a truss structure. Therefore, the upper part of the building main body 3 is fixed by the roof 4 with a truss structure, so deformation of the upper part of the building main body 3 due to shaking is suppressed. This allows the number of reinforcing members in the building main body 3 to be reduced. In this way, the effort required to provide such reinforcing members in the building main body 3 can be reduced.

[0050] The effects of this embodiment will be described. (1) Building 1 comprises foundation 2, building body 3 having a frame structure, and roof 4 having a truss structure. With this configuration, by attaching roof 4 having a truss structure to building body 3 having a frame structure, the upper part of building body 3 is less likely to distort due to shaking of the ground, and distortion of building 1 as a whole is suppressed. Therefore, the number of reinforcing members provided on building body 3 can be reduced.

[0051] (2) The building main body 3 comprises a plurality of vertical members 10, a plurality of first horizontal members 11, and a second horizontal member 12 arranged to span the plurality of first horizontal members 11. The roof 4 comprises a roof frame 80. The roof frame 80 is fixed to the first horizontal member 11 or the second horizontal member 12 with metal fittings. The roof frame 80 has reinforcing members 83 arranged to form a truss structure within a frame formed by a roof member 81 and a plurality of rafters 82. The roof frame 80 is fixed to the first horizontal member 11 or the second horizontal member 12 with metal fittings.

[0052] According to this configuration, two structures including the first cross member 11 are connected to each other by the roof frame 80. Alternatively, two structures including the second cross member 12 are connected to each other by the roof frame 80. This suppresses distortion of the building 1 as a whole due to shaking of the ground.

[0053] (3) It is preferable that one or more frame members 50 are provided between two of the multiple vertical members 10. With this configuration, the wall formed by the multiple vertical members 10 can be reinforced.

[0054] (4) It is preferable that the frame member 50 is configured by a plurality of dimensioned members 51 each having a smaller cross-sectional area than the vertical members 10, the first horizontal member 11, and the second horizontal member 12. With this configuration, the cost of the frame member 50 can be reduced.

[0055] (5) The vertical member 10 may be fixed to the foundation 2 by a foundation metal fitting 20. The vertical member 10 has a slit 10c. The foundation metal fitting 20 has a plate portion 23 that fits into the slit 10c, and a fixing portion 21 that is fixed to the foundation 2. With this configuration, the vertical member 10 can be firmly fixed to the foundation 2.

[0056] (6) The vertical member 10 and the first horizontal member 11 may be joined by a first connecting fitting 30 (see FIG. 4). The vertical member 10 has a slit 10c. The first horizontal member 11 has a mortise hole 11d. The first connecting fitting 30 has a tenon protrusion portion 31 that fits into the mortise hole 11d, and a plate portion 32 that fits into the slit 10c. With this configuration, the first horizontal member 11 can be firmly joined to the vertical member 10.

[0057] (7) The vertical member 10 and the second horizontal member 12 may be connected by a first connecting fitting 30. The vertical member 10 has a slit 10c. The second horizontal member 12 has a mortise hole. The first connecting fitting 30 has a tenon protrusion portion 31 that fits into the mortise hole, and a plate portion 32 that fits into the slit 10c. With this configuration, the second horizontal member 12 can be firmly connected to the vertical member 10.

[0058] (8) The first cross member 11 and the second cross member 12 may be connected by a second connecting metal fitting 36 (see FIG. 5). The second cross member 12 has a slit 12b. The second connecting metal fitting 36 has a fixing portion 37 and a plate portion 38 that fits into the slit 12b. With this configuration, the second cross member 12 can be firmly connected to the first cross member 11.

[0059] (9) The vertical member 10, the first horizontal member 11, and the second horizontal member 12 may be connected by a third connecting fitting 40 (see FIG. 6). The vertical member 10 has a mortise hole 10d. The first horizontal member 11 has a slit 11c. The second horizontal member 12 has a slit 12b. The third connecting fitting 40 has a shaft portion 41 that fits into the mortise hole 10d of the vertical member 10, and a plate portion 42 that fits into the slits 11c and 12b. With this configuration, the vertical member 10, the first horizontal member 11, and the second horizontal member 12 can be firmly connected to one another.

[0060] (10) The construction method of the building 1 includes a first step of forming a foundation 2, a second step of constructing a building body 3 of a frame structure on the foundation 2, and a third step of attaching a pre-assembled roof frame 80 of a truss structure to the building body 3. With this configuration, because the roof frame 80 is pre-assembled, the amount of work at the construction site can be reduced, and the construction period can be shortened.

[0061] (11) The method for constructing the building 1 further includes a fourth step of reinforcing a wall having a framework structure with pre-assembled frame members 50. The work of the fourth step may be performed in the second step or in the third step. Since the frame members 50 are pre-assembled, the building main body 3 can be reinforced at the construction site simply by attaching the frame members 50 to the building main body 3.

[0062] <Modification> The above-mentioned embodiment is an example of a form that a building and a method for constructing a building can take, and is not intended to limit the form. The building 1 can take a form different from the form exemplified in the embodiment. An example of such a form is a form in which a part of the configuration of the embodiment is replaced, changed, or omitted, or a form in which a new configuration is added to the embodiment. An example of a modified embodiment is shown below.

[0063] In the building 1 of this embodiment, the vertical members 10 are erected on the foundation 2. Alternatively, the vertical members 10 may be erected on a base provided on the foundation 2. The roof frame 80 may be connected to the roof cross member 15 by a fitting similar to the first connecting fitting 30 or the second connecting fitting 36. [Explanation of symbols]

[0064] 1...Buildings 2…Fundamentals 3…Main building 4. Roof 10...Vertical member 11…First horizontal member 12…Second horizontal member 50...Frame member 51...Dimensional lumber 63…Reinforcing member 80…Roof frame 81...Roof material 82…Rafter 91…First fitting 92…Fixed part 93…Claw part 94…Mounting part 95…Second metal fitting 96...End 97…First edge 98…Second edge 99…Slope part

Claims

1. A building structure comprising: a foundation; a building body having a frame structure provided on the foundation; a roof having a truss structure provided on the building body; and a first metal fitting; The building main body includes a plurality of vertical members, a plurality of first horizontal members arranged to span the plurality of vertical members, and a second horizontal member arranged to intersect the first horizontal members and span the plurality of first horizontal members, The roof includes a plurality of roof frames fixed to the first cross member or the second cross member by the first metal fittings, The roof frame includes a roof member that is spanned between two of the first horizontal members or two of the second horizontal members, a plurality of rafters that are connected to the roof member, and a reinforcing member that is provided to form a truss structure within a frame formed by the roof member and the plurality of rafters, The first metal fitting includes a fixing portion extending away from the roof frame along an upper surface of the first cross member or the second cross member to which the roof frame is fixed, a pair of claw portions, and an attachment portion; The fixing portion has a first edge portion and a second edge portion, and is fixed to the first cross member or the second cross member to which the roof frame is fixed, The first edge portion has an inclined portion inclined with respect to the extension direction of the first cross member or the second cross member to which the fixing portion is fixed, and a distance between the inclined portion and the second edge portion is configured to become narrower as it moves away from the roof frame; The pair of claw portions are erected from the inclined portion of the fixing portion to clamp the roof frame, The mounting portion is configured to extend from the claw portion toward the fixed portion along the roof member clamped by the pair of claw portions, At a portion where the roof member of the roof frame intersects with the first horizontal member or the second horizontal member, the roof member is fixed to the first horizontal member or the second horizontal member by the first metal fitting. architecture.

2. Between two of the vertical members of the plurality of vertical members, one or more frame members are provided. The building according to claim 1.

3. The frame member is composed of a plurality of dimensioned members each having a smaller cross-sectional area than the vertical members, the first horizontal member, and the second horizontal member. The building according to claim 2.

4. A first step of forming a base; A second step of constructing a building body having a frame structure on the foundation; and a third step of attaching a preassembled truss structure roof frame to the building body using a first metal fitting, The building main body includes a plurality of vertical members, a plurality of first horizontal members arranged to span the plurality of vertical members, and a second horizontal member arranged to intersect the first horizontal members and span the plurality of first horizontal members, The roof frame has a roof member that is spanned by two of the first horizontal members or two of the second horizontal members, The first metal fitting includes a fixing portion extending away from the roof frame along an upper surface of the first cross member or the second cross member to which the roof frame is fixed, a pair of claw portions, and an attachment portion; The fixing portion has a first edge and a second edge, The first edge portion has an inclined portion inclined with respect to the extension direction of the first cross member or the second cross member to which the fixing portion is fixed, and a distance between the inclined portion and the second edge portion is configured to become narrower as it moves away from the roof frame; The pair of claw portions are provided upright from the inclined portion of the fixing portion, The mounting portion is configured to extend from the claw portion toward the fixed portion along the roof member clamped by the pair of claw portions, In the third step, the first metal fitting is arranged at a portion where the roof member of the roof frame intersects with the first horizontal member or the second horizontal member so that the roof member is clamped by the pair of claw portions, the fixing portion is fixed to the first horizontal member or the second horizontal member that fixes the roof frame, and the pair of claw portions is fixed to the roof member. How buildings are constructed.

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