Supporting members and buildings

Abstract

To provide a support member capable of forming an air passage from an eaves to a ridge while suppressing heightening of a roof and suppressing deterioration of strength of the roof, using a climbing beam structure in which a part to support the side of a purlin is pre-installed on the climbing beam.SOLUTION: The support member for supporting a purlin installed on a receiving portion of a climbing beam structure including a climbing beam, and a receiving portion that rises from the upper surface of the climbing beam and extends in a direction orthogonal to the climbing beam, includes an attached portion attached to the receiving portion, at least one support portion having an underside support surface for supporting the underside of the purlin, and at least one connecting portion that connects the attached portion to the support portion so that the underside support surface is placed on the side of the climbing beam and below the upper surface of the climbing beam in a state where the attached portion is attached to the receiving portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a support member that is attached to a climbing beam in a building with a sloped roof and that supports a purlin, and to a building that has this support member. [Background technology]

[0002] Patent Document 1 discloses a building having a climbing beam, a purlin fixed on the climbing beam, and a sheathing board attached to the top surface of the purlin. The purlin is fixed to the climbing beam via a purlin support member. The purlin support member rises from the top surface of the climbing beam and supports the side of the purlin.

[0003] In addition, some buildings with sloped roofs have ventilation channels that run along the underside of the roof sheathing, from the eaves of the attic through the ceiling to the ridge. In such buildings, the ventilation channels allow for efficient ventilation of the attic.

[0004] However, in buildings such as the one disclosed in Patent Document 1, where a sheathing board is installed on the top surface of the main building, the space below the sheathing board is divided by the main building, which extends in a direction perpendicular to the ascending beam, making it difficult to form an air passage from the eaves to the ridge. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-64484 Summary of the Invention [Problem to be solved by the invention]

[0006] One possible configuration for creating an air passage from the eaves to the ridge is to interpose rafters extending in a direction perpendicular to the main building, i.e., parallel to the ascending beams, between the main building and the sheathing boards.

[0007] However, if rafters are installed on the top surface of the main building, the position of the sheathing board, and therefore the roof, will be raised by the rafters. This may violate regulations such as slope restrictions and shadow regulations stipulated in the Building Standards Act, and may require changes to the design of the roof of the building, such as changing the position of the eaves, to satisfy these restrictions and regulations.

[0008] One way to create a ventilation path from the eaves to the ridge while preventing the roof from becoming too high is to reduce the cross section of the purlin (the cross section perpendicular to the longitudinal direction). However, reducing the cross section of the purlin reduces its strength, which in turn reduces the strength of the roof.

[0009] Here, when forming the roof described in Patent Document 1, there is a demand for the use of a climbing beam structure in which purlin support members are pre-installed on the climbing beams in order to improve workability. Furthermore, from the perspective of standardizing materials, there is a demand for the use of a climbing beam structure to form a roof with an air passage from the eaves to the ridge.

[0010] The present invention was made in consideration of these problems, and aims to provide a support member that utilizes a climbing beam structure in which a section for supporting the side of the main building is pre-installed on the climbing beam, and that can form an air passage from the eaves to the ridge while preventing the roof from becoming too high and ensuring the strength of the roof. It also aims to provide a building that has such a support member. [Means for solving the problem]

[0011] As a result of extensive investigations, the present inventors have found that the above object can be achieved by the following invention.

[0012] A support member according to one aspect of the present invention is a support member for supporting a main building by being installed on the receiving portion of a climbing beam structure having an ascending beam and a receiving portion that rises from the upper surface of the ascending beam and extends in a direction perpendicular to the ascending beam, and is provided with an attached portion that is attached to the receiving portion, at least one supporting portion that has a lower support surface for supporting the underside of the main building, and at least one connecting portion that connects the attached portion and the supporting portion so that when the attached portion is attached to the receiving portion, the lower support surface is positioned to the side of the ascending beam and below the upper surface of the ascending beam.

[0013] By attaching the above-mentioned support members to the receiving parts of the climbing beam structure, the support members can support the purlins at a lower position than when the receiving parts are directly supporting the purlins as in the past. Therefore, when rafters are installed between the sheathing boards and the purlins to form an air passage from the eaves to the ridge, the roof position can be prevented from becoming higher than when rafters are installed on the purlins supported directly by the receiving parts. Furthermore, when using the above-mentioned support members, by lowering the support position of the purlins, the strength of the roof can be ensured without reducing the cross section of the purlins when an air passage is formed.

[0014] In the support member described above, the connecting portion may have a side support surface for supporting a side surface of the main frame.

[0015] In this embodiment, the connecting portion of the support member can be used not only to connect the attached portion and the supporting portion, but also to support the side surface of the main building.

[0016] In the above-described support member, the support portion and the connecting portion may be provided on both sides of the attached portion.

[0017] When the above support members are used to support the purlins, unlike conventional cases where the purlins are directly supported on the ascending beams by receiving parts, the purlins are divided using the ascending beam as a base and are supported on one or both sides of the ascending beam. In this form, one support member is provided with two support parts and a connecting part, so that one support member can support the purlins on both sides of the ascending beam.

[0018] A building according to another aspect of the present invention comprises the climbing beam structure having the climbing beam and the receiving portion rising from the upper surface of the climbing beam and extending in a direction perpendicular to the climbing beam, the support member installed on the receiving portion, the main building supported on the lower support surface of the support member to the side of the climbing beam, a plurality of rafters arranged horizontally at intervals on the upper surface of the main building to form an air passage, and a sheathing board arranged on the upper surface of the rafters.

[0019] In the above building, although an air passage is formed under the sheathing board by the rafters installed on the top surface of the main building, the main building is supported on the side of the ascending beam by the above support members, so the height of the roof can be prevented. Also, by using the above support members to lower the support position of the main building, it is possible to form an air passage and ensure the strength of the roof without reducing the cross section of the main building.

[0020] In the above-mentioned building, the height dimension of the rafter may be substantially the same as the height dimension from the upper surface of the ascending beam to the lower support surface.

[0021] In this embodiment, an air passage extending from the eaves to the ridge can be formed in the space obtained by lowering the position of the main roof. [Effects of the Invention]

[0022] According to the present invention, it is possible to provide a support member that can form an air passage from the eaves to the ridge while preventing the roof from becoming too high and ensuring the strength of the roof, and it is also possible to provide a building that has such a support member. [Brief explanation of the drawings]

[0023] [Figure 1] FIG. 1 is a side cross-sectional view of the eaves area of ​​a building according to one embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 3] FIG. 3 is an exploded perspective view showing a state in which a support member is attached to the upper climbing beam structure. [Figure 4] FIG. 4 is an exploded perspective view showing the state in which the upper purlin is attached to the support member. [Figure 5] FIG. 5 is a perspective view of a support member (double-sided support member) having a support portion and a connecting portion on both sides of an attached portion. [Figure 6] FIG. 6 is a perspective view of a support member (one-sided support member) having a support portion and a connecting portion on one side of the attached portion. [Figure 7] FIG. 7 is a perspective view of a support member (one-sided support member) having a support portion and a connecting portion on the other side of the attached portion. [Figure 8] FIG. 8 is a top view of one upper climbing beam structure provided with two one-side support members. [Figure 9] FIG. 9 is a cross-sectional view taken along line IX-IX in FIG. [Figure 10] FIG. 10 is a cross-sectional view taken along line XX in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] Hereinafter, a support member and a building according to one embodiment of the present invention will be described with reference to the drawings.

[0025] In this embodiment, the inclination direction along the top surface of the roof 2 shown in FIG. 1 is defined as the first direction X, and the normal direction to the plane of FIG. 1 is defined as the second direction Y. The first direction X and the second direction Y are perpendicular to each other. Of the first direction X, the upper right direction in FIG. 1 is defined as the +X direction, and the lower left direction is defined as the -X direction. The second direction Y is a horizontal direction, and of the second direction Y, the direction into the plane of FIG. 1 is defined as the +Y direction, and the direction towards you is defined as the -Y direction. Furthermore, the direction perpendicular to both the first direction X and the second direction Y is defined as the third direction Z, and of the third direction Z, the upper left direction in FIG. 1 is defined as the +Z direction, and the lower right direction is defined as the -Z direction.

[0026] Fig. 1 is a side cross-sectional view of the eaves area of ​​the building according to this embodiment as seen from the second direction Y, and Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is an exploded perspective view showing the state in which a support member is attached to the upper climbing beam structure, and Fig. 4 is an exploded perspective view showing the state in which an upper purlin is attached to the support member.

[0027] The building 1 has a structural body and attachment members attached to the structural body. As shown in Figure 1, the structural body has a first beam 6 extending in a second direction Y, a second beam 7 extending horizontally in a direction perpendicular to the second direction Y, and a connecting member 12 connecting the first beam 6 and the second beam 7. Both the first beam 6 and the second beam 7 are made of H-shaped steel.

[0028] The attached members include a roof 2 supported by a first beam 6 and a second beam 7, an exterior wall 3 attached to the first beam 6, a ceiling 4 suspended below the second beam 7 on the indoor side (+X direction side) of the exterior wall 3 via a suspension member not shown, and a soffit 5 attached to the first beam 6 on the outside (-X direction side) of the exterior wall 3. An attic 8 is formed between the roof 2 and the ceiling 4 and soffit 5. The attic 8 includes an upper portion of the soffit 5 (hereinafter referred to as "soffit 8a") and an upper portion of the ceiling 4 (hereinafter referred to as "soffit 8b").

[0029] The soffit 5 has an soffit panel 5a, a ventilation member 5b provided at the end of the soffit panel 5a on the exterior wall 3 side, and a fixing member 5c for fixing the soffit panel 5a to the first beam 6. The soffit 5 is fixed to the lower flange of the first beam 6 by the fixing member 5c with the ventilation member 5b sandwiched between the soffit 5 and the exterior wall 3. The ventilation member 5b has a vent hole that allows ventilation between the underside of the eaves (below the soffit 5) and the underside of the soffit 8a.

[0030] As shown in Figures 1 to 4, the roof 2 has a plurality of climbing beam structures 20 extending in a first direction X, a plurality of purlins 25 attached to the climbing beam structures 20 and extending in a second direction Y, rafters 27 provided on the purlins 25 and extending in the first direction X, and sheathing boards 28 provided on the purlins 25 and the rafters 27.

[0031] The climbing beam structure 20 has a plurality of lower climbing beam structures 21 extending from the first beam 6 in the -X direction and spaced apart in the second direction Y, and a plurality of upper climbing beam structures 22 supported by the second beam 7 on the +X direction side of the first beam 6 and spaced apart in the second direction Y.

[0032] The lower ascending beam structure 21 has a lower ascending beam 21a extending in the first direction X, a lower purlin support portion 21b provided on the side of the lower ascending beam 21a in the second direction Y, and a fixing member 21c provided at the upper end of the lower ascending beam 21a and fixed to the outer side of the first beam 6 (the surface facing the -X direction).

[0033] The lower purlin support portion 21b has a lower surface support portion 21b1 for supporting the lower surface (surface facing the -Z direction) of the lower purlin 25a and a side surface support portion 21b2 for supporting the side surface (surface facing the -X direction) of the lower purlin 25a.

[0034] The upper ascending beam structure 22 has an upper ascending beam 22a (ascending beam) extending in the first direction X, an upper purlin support portion 22b (support portion) rising from the upper surface of the upper ascending beam 22a and extending in the second direction Y, and a fixing member 22c for supporting the upper ascending beam 22a, which is provided at the lower end of the upper ascending beam 22a and fixed to the upper portion of the second beam 7. Note that if the building 1 does not have a second beam 7, such as in the case of a frame structure, the fixing member 22c can be provided on another structural body to support the upper ascending beam 22a.

[0035] Upper purlin support portion 22b has mounting portion 22b1 attached to the upper surface of upper ascending beam 22a, and side support portion 22b2 rising from the lower end of mounting portion 22b1 in the +Z direction and extending in second direction Y to support the side surface of the purlin (the surface facing the -X direction). Side support portion 22b2 has three through holes (two through holes 22b3 at both ends and through hole 22b4 provided between through holes 22b3) lined up in second direction Y for fixing the purlin.

[0036] The purlins 25 are provided at intervals in the first direction X. The purlins 25 also include a plurality of lower purlins 25a supported by the lower ascending beam structure 21, a plurality of upper purlins 25b supported by the upper ascending beam structure 22, and a plurality of end purlins 25c (see FIG. 2).

[0037] The lower purlin 25a is provided across two lower ascending beam structures 21 adjacent to each other in the second direction Y. Specifically, the +Y-direction end of the lower purlin 25a is fixed to the lower purlin support portion 21b of one of the two lower ascending beam structures 21. The -Y-direction end of the lower purlin 25a is fixed to the lower purlin support portion 21b of the other of the two lower ascending beam structures 21.

[0038] The upper purlin support portion 22b is a member for supporting the side of the purlin (the surface facing the -X direction). The end purlin 25c is fixed to the upper purlin support portion 22b so as to extend in the -Y direction from the upper ascending beam structure 22 provided at the end in the -Y direction as shown in Figure 2. In addition, the end purlin 25c is fixed to the upper purlin support portion 22b so as to extend in the +Y direction from the upper ascending beam structure 22 (not shown) provided at the end in the +Y direction.

[0039] The upper purlin 25b is provided across two adjacent upper ascending beam structures 22 in the second direction Y. Specifically, the +Y-direction end of the upper purlin 25b is fixed to one of the two upper ascending beam structures 22. The -Y-direction end of the upper purlin 25b is fixed to the other of the two upper ascending beam structures 22.

[0040] Here, the upper ascending beam structure 22 is originally intended to attach the purlin placed on the upper surface of the upper ascending beam 22a via the upper purlin support portion 22b. However, in this embodiment, the upper purlin 25b is supported by the upper ascending beam 22a at a position lower than the original purlin attachment position. To achieve this support, the roof 2 of this embodiment further has a support member 30 installed on the upper purlin support portion 22b of the upper ascending beam structure 22. The support member 30 supports the upper purlin 25b in the third direction Z at a position lower (a position on the -Z direction side) than the original attachment position described above.

[0041] Figure 5 is a perspective view of a support member having a support portion and a connecting portion on both sides of the attached portion, and Figures 6 and 7 are perspective views of a support member having a support portion and a connecting portion on either side of the attached portion.

[0042] The support member 30 has an attachment portion 31 that is attached to the side support portion 22b2 of the upper purlin support portion 22b, a tilt suppression portion 32 that extends in the -X direction from the lower end of the attachment portion 31 and suppresses the attachment portion 31 from tilting in the -X direction relative to the upper climbing beam structure 22, a support portion 33 that is provided on at least one side of the attachment portion 31 in the second direction Y and has a lower support surface 33a1 for supporting the lower surface of the upper purlin 25b, and connecting portions 34 that connect the attachment portion 31 to each support portion 33.

[0043] The support members 30 used in the building 1 of this embodiment include a two-sided support member 30M having support portions 33 and connecting portions 34 on both sides of the attached portion 31 shown in FIG. 5, and a +Y-side support member 30L and a -Y-side support member 30R (hereinafter also collectively referred to as "single-sided support members 30L, 30R") having support portions 33 and connecting portions 34 on only one side of the attached portion 31 shown in FIGS. 6 and 7. The two-sided support member 30M has support portions 33 and connecting portions 34 on both sides of the attached portion 31 in the second direction Y. The +Y-side support member 30L has a support portion 33 and connecting portion 34 provided on the +Y-direction side of the attached portion 31. The -Y-side support member 30R has a support portion 33 and connecting portion 34 provided on the -Y-direction side of the attached portion 31.

[0044] As shown in FIG. 2, the +Y-side support member 30L is used to support the upper purlin 25b on the upper ascending beam structure 22 located at the end in the -Y direction of two upper ascending beam structures 22 adjacent to each other in the second direction Y. The two-side support member 30M is used to support the upper purlin 25b on the middle upper ascending beam structure 22 (the upper ascending beam structure 22 other than those at both ends in the second direction Y) sandwiched between the two upper ascending beam structures 22. The -Y-side support member 30R is used to support the upper purlin 25b on the upper ascending beam structure 22 (not shown) located at the end in the +Y direction. Note that the one-side support members 30L and 30R may be used not only for the upper ascending beam structures 22 located at the ends in the second direction Y, but also for the middle upper ascending beam structure 22 in place of the two-side support member 30M.

[0045] Each part of the support member 30 will now be described. The mounting portion 31 is provided with a through hole 31a for fastening to the upper purlin support portion 22b. In the two-sided support member 30M, the mounting portion 31 has a plurality of through holes 31a arranged in the second direction Y, while the one-sided support members 30L and 30R have one through hole 31a. Furthermore, of the ends of the mounting portion 31 of the one-sided support members 30L and 30R in the second direction Y, the end opposite the side where the connecting portion 34 is provided has a protrusion 31b that protrudes in the +X direction.

[0046] The connecting portion 34 extends in the second direction Y from the attached portion 31 (in the range overlapping with the side support portion 22b2) and extends to a position on the -Z direction side of the lower end of the attached portion 31 to be connected to the support portion 33. This allows the connecting portion 34 to connect the attached portion 31 and the support portion 33 so that, when the attached portion 31 is attached to the upper purlin support portion 22b, the lower support surface 33a1 is positioned to the side of the upper ascending beam 22a and below the upper surface of the upper ascending beam 22a. The connecting portion 34 has a side support surface 34a facing the +X direction to support the side surface (surface facing the -X direction) of the upper purlin 25b, and a plurality of through holes 34b for inserting screws to fix the upper purlin 25b.

[0047] The support portion 33 has a lower support portion 33a that extends in the +X direction from the lower end of the connecting portion 34 and has a lower support surface 33a1 for supporting the lower surface (surface facing the -Z direction) of the upper main building 25b, and a protrusion 33b that rises in the +Z direction from the +X direction end of the lower support portion 33a and restricts movement of the upper main building 25b supported by the lower support surface 33a1 in the +X direction.

[0048] The rafters 27 are supported by the upper purlins 25b and are spaced apart in the second direction Y. The sheathing boards 28 are supported by the lower purlins 25a, the end purlins 25c, and the rafters 27. A space is formed between the sheathing boards 28 and the upper purlins 25b.

[0049] In the space formed between the sheathing board 28 and the upper purlin 25b, an air passage 2a is formed between adjacent rafters 27, extending in the first direction X from the eaves ceiling 8a to the ridge (not shown), as shown in Figures 1 and 2.

[0050] Next, using the above-mentioned Figures 3, 4, and 8 to 10, we will explain how to attach the support members 30 to the upper climbing beam structure 22 and how to attach the upper purlins 25b to the support members 30. Figures 3 and 4 show the state in which both side support members 30M are provided on one upper climbing beam structure 22. Figures 8 to 10 are diagrams showing the state in which a +Y side support member 30L and a -Y side support member 30R are provided on one upper climbing beam structure 22. Figure 8 is a view from above (+Z direction), Figure 9 is a cross-sectional view taken along line IX-IX in Figure 8, and Figure 10 is a cross-sectional view taken along line XX in Figure 8.

[0051] 3 and 8, the mounting portion 31 of the support member 30 is aligned from one side (-X direction side) of the side support portion 22b2 of the upper purlin support portion 22b, and a bolt 35a is inserted through the through hole 31a and the through hole 22b3 provided in the side support portion 22b2. The mounting portion 31 is attached to the upper purlin support portion 22b by fastening a nut 35b to the bolt 35a. In this way, the support member 30 is attached to the upper climbing beam structure 22.

[0052] In the one-side support members 30L and 30R, when the attached portion 31 is aligned with the side support portion 22b2 of the upper purlin support portion 22b, the protrusion 31b is inserted into the through hole 22b4 provided in the side support portion 22b2, and the attached portion 31 is positioned at a predetermined position on the side support portion 22b2. Note that the through hole 22b4 can be omitted from the upper purlin support portion 22b for attaching the both-side support member 30M.

[0053] After attaching the support member 30 to the upper climbing beam structure 22, the upper purlin 25b is placed on the lower support surface 33a1 of the support portion 33 of the support member 30 and the side support surface 34a of the connecting portion 34. With the upper purlin 25b supported by the support portion 33 and the connecting portion 34, as shown in Figures 4 and 8 to 10, a screw 35c is passed through the through hole 34b and screwed into the upper purlin 25b supported by the side support surface 34a. This fixes the upper purlin 25b to the support member 30.

[0054] In this embodiment, the height dimension (length dimension in the third direction Z) of the rafters 27 provided on the upper surface of the upper purlin 25b is substantially the same as the height dimension from the upper surface of the upper ascending beam 22a to the lower support surface 33a1 of the support member 30. In addition, the upper purlin 25b has a cross-sectional dimension (a cross section perpendicular to the second direction Y, which is the longitudinal direction) equivalent to that of the end purlin 25c. Therefore, as shown in FIG. 2, the rafters 27 and the end purlins 25c are provided so that their respective upper surfaces are positioned on the same plane in the third direction Z, and the sheathing boards 28 are provided on that plane.

[0055] In the building 1 of this embodiment, in the space formed between the sheathing board 28 and the upper purlin 25b, an air passage 2a extending in the first direction X from the eaves ceiling 8a to the ridge (not shown) is formed between adjacent rafters 27. The air passage 2a is also connected to the ceiling 8b.

[0056] (Action, effect) By attaching the support member 30 according to the above embodiment to the upper purlin support portion 22b provided on the upper ascending beam structure 22, the support member 30 can support the upper purlin 25b at a lower position than when the upper purlin support portion 22b directly supports the upper purlin 25b as in the conventional case. Therefore, when rafters 27 are provided between the sheathing boards 28 and the upper purlin 25b to form an air passage 2a extending from the eaves to the ridge, the height of the roof 2 can be prevented from becoming higher than when rafters 27 are provided on the upper purlin 25b directly supported by the upper purlin support portion 22b. Furthermore, when the support member 30 is used, by lowering the support position of the upper purlin 25b, the strength of the roof 2 can be ensured without reducing the cross section (cross section perpendicular to the second direction Y) of the upper purlin 25b when the air passage 2a is formed.

[0057] The connecting portion 34 of the support member 30 has a side support surface 34a for supporting the side of the upper purlin 25b. Therefore, the connecting portion 34 of the support member 30 can be used not only to connect the attached portion 31 and the support portion 33, but also to support the side of the upper purlin 25b.

[0058] When supporting the upper purlin 25b using the support member 30, unlike the conventional case in which the upper purlin 25b is directly supported on the upper ascending beam 22a by the upper purlin support portion 22b, the upper purlin 25b is divided using the upper ascending beam 22a as a reference, and the upper purlin 25b is supported on one or both sides of the upper ascending beam 22a. Since the two-side support member 30M is provided with two support portions 33 and connecting portions 34, one two-side support member 30M can support the upper purlin 25b on both sides of the upper ascending beam 22a.

[0059] In the building 1 of this embodiment, the ventilation passage 2a is formed by the rafters 27 provided on the top surface of the upper purlin 25b, but the upper purlin 25b is supported laterally by the upper ascending beam 22a by the support members 30, which prevents the position of the roof 2 from becoming too high. Also, by using the support members 30 to lower the support position of the upper purlin 25b, the ventilation passage 2a can be formed and the strength of the roof 2 can be ensured without reducing the cross section of the upper purlin 25b.

[0060] In the building 1, the height dimension of the rafters 27 is substantially the same as the height dimension from the upper surface of the upper ascending beam 22a to the lower support surface 33a1 of the support member 30, and an air passage 2a can be formed from the eaves ceiling 8a to the ridge in the space obtained by lowering the position of the upper purlin 25b. [Explanation of symbols]

[0061] 1 Building 20 Climbing beam structure 22 Upper ascending beam structure (ascending beam structure) 22a Upper climbing beam (climbing beam) 22b Upper purlin support part (support part) 25 Main house 25b Upper main building (main building) 27 Rafters 28 Field board 30 Support member 30L +Y side support member (one-side support member, support member) 30M Support members on both sides (support members) 30R -Y side support member (one-side support member, support member) 31 Mounting part 33 Support part 33a1 Lower support surface 34 Connecting part 34a Side support surface

Claims

1. A support member for supporting a purlin by being installed on a receiving portion of an ascending beam structure having an ascending beam and a receiving portion that rises from the upper surface of the ascending beam and extends in a direction perpendicular to the ascending beam, a mounting portion that is attached to the receiving portion; At least one support portion having a lower surface support surface for supporting a lower surface of the purlin; A support member comprising at least one connecting portion that connects the attached portion and the support portion so that, when the attached portion is attached to the receiving portion, the lower support surface is positioned to the side of the ascending beam and below the upper surface of the ascending beam.

2. The support member according to claim 1 , wherein the connecting portion has a side support surface for supporting a side surface of the purlin.

3. The support member according to claim 1 or 2, wherein the support portion and the connecting portion are provided on both sides of the attached portion.

4. The climbing beam structure includes the climbing beam and the receiving portion that rises from the upper surface of the climbing beam and extends in a direction perpendicular to the climbing beam; The support member according to any one of claims 1 to 3, which is installed in the receiving portion; The purlin is supported on the lower support surface of the support member at the side of the ascending beam; A plurality of rafters spaced apart horizontally on the top surface of the main building to form an air passage; A building having a sheathing board attached to the upper surface of the rafters.

5. The building according to claim 4, wherein the height dimension of the rafter is substantially the same as the height dimension from the upper surface of the ascending beam to the lower support surface.

Images