Wall construction method and wall structure

Abstract

To improve wall workability.SOLUTION: A construction method for a wall (exterior wall 1) including building structural members (pillars 11, studs 12, support members 13, and the like) installed in the vertical direction and plate-shaped insulation material 20 installed between the building structural members, includes a structural member installation step of installing the building structural members and an insulation material installation step of installing the plate-shaped insulation material 20. In the structural member installation step, the building structural members are installed so that the spacing between the building structural members is either a first spacing X, a second spacing Y different from the first spacing X, or a third spacing Z different from the first spacing X and the second spacing Y. In the insulation material installation step, a first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 at a location where the spacing between the building structural members is the first spacing X, a second plate-shaped insulation material 22 is installed as the plate-shaped insulation material 20 at a location where the spacing between the building structural members is the second spacing Y, and a third plate-shaped insulation material 23 is installed at a location where the spacing between the building structural members is the third spacing Z.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a wall construction method and a wall structure. [Background technology]

[0002] Patent Document 1 discloses a technique for filling spaces between pillars with foamed plastic insulation plate material as a wall insulation construction method. Such plate insulation material is provided between adjacent pillars that make up a wall (between pillars, between a pillar and a stud, between studs). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2015-078530 A Summary of the Invention [Problem to be solved by the invention]

[0004] The spacing between pillars, between pillars and studs, and between studs themselves are all different, so it is necessary to prepare multiple types of plate insulation material with different width dimensions for the plate insulation material to be installed between pillars, between pillars and studs, and between studs. In addition, since there are multiple types of studs with different width dimensions, the spacing between studs and the spacing between studs will vary depending on the studs used. Therefore, it is necessary to prepare multiple types of plate insulation material with different width dimensions to be installed between studs, and it is necessary to prepare multiple types of plate insulation material with different width dimensions to be installed between studs.

[0005] In addition, pillars may be fitted with support materials for fixing fireproof surface materials such as gypsum boards or support materials for fixing window sills. In such cases, the width of the plate insulation material must be shortened by the width of the support material, so the spacing between pillars and between pillars and studs will change depending on whether or not a support material is attached to the pillars. Therefore, it is necessary to prepare multiple types of plate insulation material with different width dimensions to be installed between pillars, and it is necessary to prepare multiple types of plate insulation material with different width dimensions to be installed between pillars and studs. Furthermore, since there are multiple types of support materials with different width dimensions, the number of types (width dimensions) of plate insulation material that must be prepared increases accordingly.

[0006] The plate insulation material can be cut to the desired width in a factory, or can be cut to the desired width at the construction site. When cutting plate insulation to the desired width at a factory, it is necessary to select the appropriate plate insulation at the construction site from multiple types of plate insulation with different widths that have been delivered from the factory. Therefore, the more types (widths) of plate insulation there are, the more time it takes to select a plate insulation at the construction site, which reduces workability. In addition, when cutting the plate insulation material to the desired width at the construction site, the number of types of plate insulation material delivered from the factory is small (for example, one type), so it does not take much time to select a plate insulation material at the construction site. However, in this case, cutting work must be performed at the construction site to adjust the width of the plate insulation material, which still reduces workability.

[0007] The present invention has been made in consideration of the above-mentioned circumstances, and its object is to improve the workability of walls that include building structural materials such as pillars and studs, and plate-shaped insulation material installed between the building structural materials. [Means for solving the problem]

[0008] The invention described in claim 1 is a construction method for a wall (exterior wall 1) including building structural members (pillars 11, studs 12, support members 13, etc.) installed in a vertical direction and plate-shaped insulation material 20 installed between the building structural members, as shown in, for example, Figs. 1 to 9 , A structural material installation process for installing the building structural material; and an insulation installation step of installing the plate-shaped insulation material 20. In the structural material installation step, the building structural materials are installed so that the intervals between the building structural materials are either a first interval X, a second interval Y different from the first interval X, or a third interval Z different from the first interval X and the second interval Y; In the heat insulation installation process, A first plate-shaped insulating material 21 is installed as the plate-shaped insulating material 20 at a location where the interval between the building structural members is the first interval X, A second plate-shaped insulation material 22 having a width dimension different from that of the first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 at a location where the interval between the building structural members is the second interval Y, The feature of this invention is that a third plate-shaped insulation 23 having a width dimension different from that of the first plate-shaped insulation 21 and the second plate-shaped insulation 22 is installed as the plate-shaped insulation 20 at a location where the distance between the building structural materials is the third distance Z.

[0009] According to the invention described in claim 1, since there are only three types of spacing between building structural members, namely, the first spacing X, the second spacing Y, and the third spacing Z, only three types (width dimensions) of plate insulation material 20 need to be prepared. Therefore, it does not take time to select plate insulation material 20 at the construction site, and there is no need to perform cutting work to adjust the width dimension of plate insulation material 20 at the construction site, improving the workability of walls.

[0010] The invention described in claim 2 is, for example, as shown in Figs. 3 to 5, in the wall construction method described in claim 1, When the space between the building structural members (pillars 11, studs 12, support members 13, etc.) is divided into a first space S1 and a second space S2 in the thickness direction, In the structural material installation step, a brace 14 is placed in the first space S1, In the heat insulating material installation step, separate plate-shaped heat insulating materials 20 are arranged in the first space S1 and the second space S2, The thickness dimension of the brace 14 is shorter than the thickness dimension of the building structural material, The plate-shaped insulating material 20 arranged in the first space S1 is The thickness dimension is the same as that of the diagonal brace 14, It is characterized by having an inclined surface 20a that is inclined along the diagonal brace 14.

[0011] According to the invention as recited in claim 2, the workability of the wall can be improved, and the thermal insulation property of the wall can be improved.

[0012] The invention described in claim 3 is, for example, as shown in Figs. 6 to 9, a wall construction method according to claim 1, The method includes a wiring process for installing a wiring box 100 for accommodating a wiring device and a cable 110 extending from the wiring device between the building structural members (pillars 11, studs 12, support members 13, etc.), When the space between the building structural members is divided into a third space S3, a fourth space S4, and a fifth space S5 in the height direction, In the wiring step, The wiring box 100 is disposed in the fourth space S4 located between the third space S3 and the fifth space S5, The cable 110 is disposed in the fifth space S5, In the heat insulating material installation step, separate plate-shaped heat insulating materials 20 are arranged in the third space S3, the fourth space S4, and the fifth space S5, The plate-shaped insulation material 20 arranged in the fourth space S4 has a first notch 20b in a range where it interferes with the wiring box 100, The plate-shaped insulating material 20 arranged in the fifth space S5 is characterized by having a second notch 20c in an area where it interferes with the cable 110.

[0013] According to the invention as set forth in claim 3, it is possible to improve the workability of the wall and also improve the thermal insulation properties of the wall.

[0014] The invention described in claim 4 is, for example, as shown in Figs. 1 and 4, in the wall construction method described in claim 1, The method includes a fireproof surface material installation process for installing a fireproof surface material 3, The plate-shaped insulating material 20 is characterized in that it is covered by the fire-resistant facing material 3 with a gap 30 provided between the plate-shaped insulating material 20 and the fire-resistant facing material 3 .

[0015] According to the invention recited in claim 4, a gap 30 is provided between the plate-shaped insulation material 20 and the fire-resistant surface material 3 that covers the plate-shaped insulation material 20. Therefore, the gap 30 can be used for wiring electric wires, communication lines, etc.

[0016] The invention described in claim 5 is a wall structure including building structural members (pillars 11, studs 12, support members 13, etc.) installed in a vertical direction, and plate-shaped insulation material 20 installed between the building structural members, as shown in, for example, Figs. 1 to 9 , The building structural materials are installed such that the intervals between the building structural materials are either a first interval X, a second interval Y different from the first interval X, or a third interval Z different from the first interval X and the second interval Y, A first plate-shaped insulating material 21 is installed as the plate-shaped insulating material 20 at a location where the interval between the building structural members is the first interval X, In the location where the interval between the building structural members is the second interval Y, a second plate-shaped insulation material 22 having a width dimension different from that of the first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20, A feature of the present invention is that, in the locations where the distance between the building structural materials is the third distance Z, a third plate-shaped insulation 23 having a width dimension different from that of the first plate-shaped insulation 21 and the second plate-shaped insulation 22 is installed as the plate-shaped insulation 20.

[0017] According to the invention described in claim 5, since there are only three types of spacing between building structural members, namely, the first spacing X, the second spacing Y, and the third spacing Z, only three types (width dimensions) of plate insulation material 20 need to be prepared. Therefore, it is not time-consuming to select plate insulation material 20 at the construction site, and there is no need to perform cutting work to adjust the width dimension of plate insulation material 20 at the construction site, improving the workability of the wall. Effect of the Invention

[0018] According to the present invention, the workability of walls can be improved. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is a cross-sectional plan view showing the exterior and interior walls of a building. [Diagram 2] FIG. 2 is a perspective view showing a portion of an exterior wall where a window is provided. [Diagram 3] FIG. 2 is a front view showing a portion of the exterior wall where a brace is provided. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] A diagram showing the arrangement of plate-shaped insulation material in the area where diagonal braces are installed. [Figure 6] 1 is a front view showing a portion of an exterior wall where a wiring box and cables are provided. FIG. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 6. [Figure 8] FIG. 7(a) is a cross-sectional view taken along line VIII-VIII in FIG. 6, and FIG. 7(b) is a diagram showing the arrangement of plate-shaped insulating materials in a portion where a wiring box is provided. [Figure 9] FIG. 7(a) is a cross-sectional view taken along line IX-IX in FIG. 6, and FIG. 7(b) is a diagram showing the arrangement of plate-shaped insulation materials in a portion where cables are installed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples.

[0021] "building" Fig. 1 is a plan cross-sectional view showing an example of an exterior wall 1 and an interior wall 2 of a building. Fig. 2 is a perspective view showing an example of a portion of the exterior wall 1 where a window is provided. For convenience, Fig. 2 omits illustration of a fire-resistant surface material 3, a load-bearing surface material 4, a plate-shaped insulating material 20, etc. In this embodiment, the framework of the building is constructed by a conventional construction method (wooden frame construction). The framework includes pillars 11, studs 12, beams (not shown), and the like.

[0022] Moreover, the framework (pillars 11, studs 12, beams, etc.) that constitutes the framework is covered with fire-resistant surface material 3 on the indoor side and with load-bearing surface material 4 on the outdoor side. In this embodiment, a gypsum board having a thickness of 12.5 mm is used as the fire-resistant surface material 3, but the present invention is not limited to this. In addition, in this embodiment, structural plywood having a thickness of 9 mm is used as the load-bearing surface material 4, but the present invention is not limited to this.

[0023] The framework of a building is constructed based on a standard dimension, module M, as shown in Figures 1 and 2. Here, a module refers to a standard dimension when trying to arrange all parts of a building in multiples of a certain size. For example, if one module is the standard dimension, the length of 1M (module) is 800mm, 900mm, 910mm, 1000mm, etc. In this embodiment, it is set to 1m = 910mm. In the building frame, the distance between the center lines (column centers) of the pillars 11 and studs 12, and the distance between the center lines (column centers) of the studs 12 are 0.5m (455mm in this embodiment).

[0024] Building structural materials An exterior wall 1 of a building is configured to include at least a pillar 11, a stud 12, and a support member 13 as building structural materials (basic structural materials) installed in the vertical direction. The columns 11 are installed at multiple locations. The columns 11 may be through columns or tubular columns. The columns 11 have the same width dimension a and thickness dimension. In other words, the columns 11 are building structural members that are square in plan view (or cross-sectional view). In this embodiment, a is set to 105 mm, but the present invention is not limited to this.

[0025] Studs 12 are installed between the pillars 11. The studs 12 may be plywood joint supports. The width dimension b of the studs 12 is set to be shorter than the thickness dimension. In other words, the studs 12 are building structural materials that are rectangular in plan view (or horizontal cross-sectional view). The thickness dimension of the studs 12 is set to be the same as the thickness dimension of the pillars 11. In this embodiment, b is set to 45 mm, but this is not limiting.

[0026] As shown in Fig. 1, a support material 13 is attached to a pillar 11 installed at an inside corner of a building, that is, a pillar 11 arranged at the intersection of mutually intersecting exterior walls 1, or a pillar 11 arranged at the intersection of mutually intersecting exterior walls 1 and interior walls 2. This support material 13 is, for example, a support material for an inside corner provided for fixing (fastening) a fire-resistant surface material 3.

[0027] 2, a support material 13 is also attached to a pillar 11 that constitutes a portion of the exterior wall 1 where a window is provided. This support material 13 is, for example, a window sill support material provided for fixing (fastening) a window sill 5. Specifically, the portion of the exterior wall 1 where the window is provided is composed at least of a pair of pillars 11, a window sill 5 suspended between the pair of pillars 11, a lintel 6 suspended between the pair of pillars 11, a pair of supports 13 that support the ends of the window sill 5 from below, and studs 12 provided on the underside of the window sill 5 and the upper side of the lintel 6.

[0028] The width dimension c of the support material 13 is set to be shorter than the thickness dimension. In other words, the support material 13 is a building structural material having a rectangular shape in a plan view (or a horizontal cross-sectional view). The thickness dimension of the support material 13 is set to be the same as the thickness dimension of the pillar 11. In this embodiment, c is set to 45 mm, but is not limited to this. Furthermore, the width dimension b of the stud 12 and the width dimension c of the support material 13 may be the same or different.

[0029] In this manner, in this embodiment, as the columns 11 that constitute the exterior wall 1, only one type of column, that is, columns having a width dimension of "a", are used. In this embodiment, only one type of stud is used as the studs 12 that constitute the exterior wall 1, that is, only studs having a width dimension "b". In this embodiment, among the receiving materials constituting the exterior wall 1, only one type of receiving material, that is, a receiving material having a width dimension of "c", is used as the receiving material 13 attached to the pillar 11.

[0030] Therefore, the first distance X between the pillar 11 and the stud 12 is standardized to X = 0.5M-0.5a-0.5b. In addition, the second spacing Y, which is the distance between the partition walls 12, is standardized to Y = 0.5M-0.5b-0.5b. In addition, the third distance Z, which is the distance between the receiving material 13 and the partition wall 12, is standardized to Z=0.5M-0.5ac-0.5b.

[0031] As described above, in this embodiment, the settings are 1M=910 mm, a=105 mm, b=45 mm, and c=45 mm. Therefore, in this embodiment, X = 380 mm (= 455 mm - 52.5 mm - 22.5 mm), Y = 410 mm (= 455 mm - 22.5 mm - 22.5 mm), Z = 335 mm (= 455 mm - 52.5 mm - 45 mm - 22.5 mm).

[0032] <Plate-shaped insulation material> As shown in Fig. 1, the exterior wall 1 of a building comprises building structural members (pillars 11, studs 12, support members 13, etc.) installed in the vertical direction, as well as plate-shaped insulation material 20 installed in the spaces between the building structural members. In this embodiment, a foamed plastic insulation material (foam-based insulation material) is used as the plate-shaped insulation material 20, but the present invention is not limited to this. The exterior wall 1 of this embodiment is equipped with plate-shaped insulation 20, including a first plate-shaped insulation 21 installed between the pillar 11 and the stud 12, a second plate-shaped insulation 22 installed between the studs 12, and a third plate-shaped insulation 23 installed between the support material 13 and the stud 12.

[0033] In this embodiment, since there is only one type of interval (first interval X) between the pillar 11 and the stud 12, the width dimension of the first plate insulation material 21 installed between the pillar 11 and the stud 12 may also be one type. In other words, there is no need to prepare multiple types of plate insulation material 20 as the plate insulation material 20 to be installed between the pillar 11 and the stud 12. The width dimension of the first plate-shaped insulating material 21 may be set to be the same as the first interval X, or may be set to be slightly shorter than the first interval X. In this embodiment, the width dimension of the first plate-shaped insulating material 21 is set to 378 mm, but is not limited to this.

[0034] In addition, in this embodiment, since there is only one type of spacing (second spacing Y) between the studs 12, the width dimension of the second plate-shaped insulation material 22 installed between the studs 12 only needs to be one type. In other words, there is no need to prepare multiple types of plate-shaped insulation material 20 as the plate-shaped insulation material 20 to be installed between the studs 12. The width dimension of the second plate-shaped insulating material 22 may be set to be the same as the second interval Y, or may be set to be slightly shorter than the second interval Y. In this embodiment, the width dimension of the second plate-shaped insulating material 22 is set to 408 mm, but is not limited to this.

[0035] In addition, in this embodiment, since there is only one type of spacing (third spacing Z) between the receiving material 13 and the stud 12, the width dimension of the third plate-shaped insulation material 23 installed between the receiving material 13 and the stud 12 only needs to be one type. In other words, there is no need to prepare multiple types of plate-shaped insulation material 20 as the plate-shaped insulation material 20 to be installed between the receiving material 13 and the stud 12. The width dimension of the third plate-shaped insulating material 23 may be set to be the same as the third spacing Z, or may be set to be slightly shorter than the third spacing Z. In this embodiment, the width dimension of the third plate-shaped insulating material 23 is set to 333 mm, but is not limited to this.

[0036] <Plate-shaped insulation material in diagonal braces> Fig. 3 is a front view (viewed from the indoor side) showing an example of a portion of an exterior wall 1 where a diagonal brace 14 is provided. Fig. 4 is a cross-sectional view taken along line IV-IV in Fig. 3. Fig. 5 is a diagram showing an example of the arrangement of plate-shaped insulation material 20 in the portion where a diagonal brace 14 is provided. For convenience, fire-resistant surface material 3 and the like are omitted from Fig. 3. In the spaces between building structural members (pillars 11, studs 12, support members 13, etc.) installed vertically, there are spaces where diagonal braces 14 are installed (see Figures 3 to 5) and spaces where diagonal braces 14 are not installed (see Figures 1, 2, and Figures 6 to 9 described below).

[0037] 4, when the space in which the diagonal brace 14 is provided is divided in the thickness direction into a first space S1 which is an outdoor space (and has the same thickness dimension as the diagonal brace 14) and a second space S2 which is an indoor space, the diagonal brace 14 is disposed in the first space S1. In other words, the diagonal brace 14 is installed in a state in which it is close to the outdoor side (in contact with the load-bearing surface material 4). In this embodiment, the thickness dimension of the diagonal brace 14 is set to 45 mm, but is not limited to this.

[0038] The plate-shaped insulating material 20 arranged in the first space S1 and the plate-shaped insulating material 20 arranged in the second space S2 are separate bodies. That is, in the space in which the diagonal braces 14 are provided, two sheets of plate-shaped insulating material 20 are installed overlapping each other so that a single sheet of plate-shaped insulating material 20 does not straddle the first space S1 and the second space S2.

[0039] 5, triangular or trapezoidal plate insulation materials 20 are arranged in the first space S1 to match the shape of the space between the building structural members (pillars 11, studs 12, bracing members 13, etc.) installed in the vertical direction and the diagonal braces 14. That is, plate insulation materials 20 having inclined surfaces 20a that incline along the diagonal braces 14 are arranged in the first space S1. On the other hand, in the second space S2, since the diagonal braces 14 are not positioned, there is no need to consider interference with the diagonal braces 14. Therefore, as shown in Fig. 3, in the second space S2, rectangular plate-shaped insulation material 20 is arranged to match the shape of the space between building structural members (pillars 11, studs 12, support members 13, etc.) installed in the vertical direction.

[0040] In the space where the diagonal braces 14 are installed, multiple sheets of plate-shaped insulation material 20 are installed stacked on top of each other, whereas in the space where the diagonal braces 14 are not installed, thick plate-shaped insulation material 20 that is thicker than the plate-shaped insulation material 20 installed in the space where the diagonal braces 14 are installed is installed without stacking, as shown in Figure 1. As such, the exterior wall 1 of this embodiment is equipped with, as the plate-shaped insulation material 20, a thin plate-shaped insulation material 20 (see Figure 4) that is installed in a space where diagonal braces 14 are provided, and a thick plate-shaped insulation material 20 (see Figure 1 and Figures 7 to 9 described below) that is installed in a space where diagonal braces 14 are not provided.

[0041] The thin plate-shaped insulation material 20 is used in a state where two sheets are stacked on top of each other. The thick plate-shaped insulation material 20 is used in a state where they are not stacked. The thickness dimension of the thick plate-shaped insulation material 20 is set to be twice the thickness dimension of the thin plate-shaped insulation material 20. Therefore, the thickness dimension of the thick plate-shaped insulation material 20 and the thickness dimension when two sheets of the thin plate-shaped insulation material 20 are stacked on top of each other are the same. The thickness dimension of the thin plate-shaped insulating material 20 is set to be the same as the thickness dimension of the diagonal brace 14 (the thickness dimension of the first space S1). That is, in this embodiment, the thickness dimension of the thin plate-shaped insulating material 20 is set to 45 mm.

[0042] The thickness dimension of the thick plate insulation material 20 and the thickness dimension when two thin plate insulation materials 20 are stacked on top of each other are set shorter than the thickness dimensions of building structural materials (pillars 11, studs 12, support materials 13, etc.) installed in the vertical direction. Furthermore, as shown in Figures 1 and 4, the plate insulation material 20 is installed close to the outdoors (in contact with the load-bearing surface material 4). Therefore, a gap 30 is formed between the plate insulation material 20 and the fire-resistant surface material 3.

[0043] As described above, in this embodiment, the thickness of the pillars 11, studs 12, and support material 13 is 105 mm. Also, in this embodiment, plate insulation material 20 (thick plate insulation material 20) with a thickness of 90 mm is used without being stacked, or two plate insulation materials 20 (thin plate insulation material 20) with a thickness of 45 mm are used stacked together. Therefore, in this embodiment, the dimension (thickness) of the gap 30 is set to 15 mm.

[0044] <Plate-shaped heat insulating material in wiring section> FIG. 6 is a front view (viewed from the indoor side) showing an example of a portion of an exterior wall 1 where a wiring box 100 and a cable 110 are provided. FIG. 7 is a cross-sectional view taken along line VII-VII in FIG. 6. FIG. 8(a) is a cross-sectional view taken along line VIII-VIII in FIG. 6, and FIG. 8(b) is a diagram showing an example of the arrangement of plate-shaped insulation 20 in the portion where a wiring box 100 is provided. FIG. 9(a) is a cross-sectional view taken along line IX-IX in FIG. 6, and FIG. 9(b) is a diagram showing an example of the arrangement of plate-shaped insulation 20 in the portion where a cable 110 is provided. For convenience, fire-resistant surface material 3 and the like are omitted from FIGS. 6 to 9.

[0045] In the spaces between building structural materials (pillars 11, studs 12, support materials 13, etc.) installed vertically, there are spaces where electrical equipment such as wiring boxes 100 and cables 110 are installed (see Figures 6 to 9), and spaces where electrical equipment is not installed (see Figures 1 to 5). The wiring box 100 is a switch box for accommodating wiring devices such as switches and outlets. The cable 110 is an electric wire extending from a wiring device housed in the wiring box 100 .

[0046] As shown in Figure 6, if the space in which the electrical equipment is installed is divided vertically from the bottom into a third space S3, a fourth space S4, and a fifth space S5, the wiring box 100 is placed in the middle, fourth space S4, and the cable 110 is placed in the top, fifth space S5. It is also possible to divide the space in which the electrical equipment is installed vertically into a third space S3, a fourth space S4, and a fifth space S5, in that case, the wiring box 100 is placed in the middle fourth space S4, and the cable 110 is placed in the bottom fifth space S5. In other words, the space in which the electrical equipment is installed can be divided into a third space (general area) S3 in which no electrical equipment is placed, a fourth space (switch box area) S4 in which the wiring box 100 is placed, and a fifth space (electrical wiring area) S5 in which the cable 110 is placed.

[0047] The plate-shaped insulating material 20 arranged in the third space S3, the plate-shaped insulating material 20 arranged in the fourth space S4, and the plate-shaped insulating material 20 arranged in the fifth space S5 are separate bodies. That is, in the space in which the electrical materials are provided, the plate-shaped insulating material 20 is installed in three layers so that a single plate-shaped insulating material 20 does not straddle the third space S3 and the fourth space S4, and so that a single plate-shaped insulating material 20 does not straddle the fourth space S4 and the fifth space S5.

[0048] 8(a), a thick plate-shaped insulating material 20 having a first notch 20b is disposed in the fourth space S4. The first notch 20b is provided to avoid interference with the wiring box 100 (more specifically, the airtight cover 120 attached externally to the wiring box 100). The first notch 20b is open at both the lower end (the end on the third space S3 side) and the upper end (the end on the fifth space S5 side). Therefore, as shown in Fig. 8(b), with the cable 110 positioned within the first notch 20b of the plate-shaped insulation material 20 arranged in the fourth space S4, the plate-shaped insulation material 20 can be slid up and down.

[0049] The height dimension of the fourth space S4 is set to be approximately the same as the height dimension of the airtight cover 120 attached to the outside of the wiring box 100. In other words, the height dimension of the plate-shaped insulation material 20 arranged in the fourth space S4 is set to be approximately the same as the height dimension of the airtight cover 120. From the viewpoint of minimizing loss of the heat insulating material, it is preferable that the height dimension of the first notch 20b is as short as possible. In other words, it is preferable that the height dimension of the first notch 20b is approximately the same as the height dimension of the airtight cover 120. By setting the height dimension of the fourth space S4 to be approximately the same as the height dimension of the airtight cover 120, it is possible to satisfy both the upper and lower ends of the first notch 20b being open and the height dimension of the first notch 20b being approximately the same as the height dimension of the airtight cover 120.

[0050] As shown in Fig. 9(a), a thick plate-shaped insulation material 20 having a second notch 20c is disposed in the fifth space S5. The second notch 20c is provided to avoid interference with the cable 110. The cable (electric wire) 110 may be in a state where it is protected by a conduit such as a CD pipe (inserted into the conduit), and in that case, the size of the second notch 20c is set to a size that can avoid interference with the conduit. Both the lower end (the end on the fourth space S4 side) and the upper end (the end on the ceiling side) of the second notch 20c are open.

[0051] On the other hand, since no electrical equipment is located in the third space S3, there is no need to consider interference with electrical equipment such as the wiring box 100 or the cable 110. Therefore, as shown in Fig. 7, the plate insulation material 20 arranged in the third space S3 has a rectangular shape in a plan view (or a horizontal cross-sectional view). In other words, a thick plate insulation material 20 without any notches or the like is arranged in the third space S3.

[0052] The size (width dimension, thickness dimension) of the notches 20b, 20c in a plan view (or a cross-sectional plan view) is preferably as small as possible in order to minimize loss of the heat insulating material. The wiring box 100 may be a box for housing a wiring device for communication, and the cable 110 may be a communication line.

[0053] 《Wall construction method》 Next, a description will be given of an example of a construction method for the exterior wall 1 in this embodiment. Here, a construction method for the exterior wall 1 on the first floor of a building will be described, but the construction method can also be similarly applied to the exterior walls 1 on the second floor and above.

[0054] <Transportation process> First, building structural materials (foundations, beams, columns 11, studs 12, support materials 13, diagonal braces 14, window sills 5, lintels 6, etc.), plate-shaped insulation material 20, fire-resistant surface materials 3, load-bearing surface materials 4, etc. are transported from the factory to the construction site. The pillar 11 brought to the construction site is a piece of wood with a width and thickness of "a" (for example, a = 105 mm). Moreover, the stud 12 delivered to the construction site is a piece of wood having a width dimension "b (for example, b=45 mm)" and a thickness dimension "a". Moreover, the receiving material 13 delivered to the construction site is a piece of wood having a width dimension "c (for example, c=45 mm)" and a thickness dimension "a".

[0055] In addition, the plate-shaped insulation material 20 transported to the construction site consists of a first plate-shaped insulation material 21, a second plate-shaped insulation material 22 having a width dimension different from that of the first plate-shaped insulation material 21, and a third plate-shaped insulation material 23 having a width dimension different from that of the first plate-shaped insulation material 21 and the second plate-shaped insulation material 22. Thick first plate-shaped insulation material 21 (for example, first plate-shaped insulation material 21 with a thickness dimension of 90 mm) and thin first plate-shaped insulation material 21 (for example, first plate-shaped insulation material 21 with a thickness dimension of 45 mm) are appropriately transported to the construction site. In addition, thick second plate-shaped insulation material 22 (for example, second plate-shaped insulation material 22 with a thickness dimension of 90 mm) and thin second plate-shaped insulation material 22 (for example, second plate-shaped insulation material 22 with a thickness dimension of 45 mm) are appropriately transported to the construction site. In addition, thick third plate-shaped insulation material 23 (for example, third plate-shaped insulation material 23 with a thickness dimension of 90 mm) and thin third plate-shaped insulation material 23 (for example, third plate-shaped insulation material 23 with a thickness dimension of 45 mm) are appropriately transported to the construction site.

[0056] <Foundation installation process> Next, the base is placed on top of the foundation.

[0057] <Structural material installation process> Next, building structural members (pillars 11, studs 12, support members 13, etc.) that are arranged along the vertical direction are installed. Specifically, pillars 11 are erected on the foundation. Also, studs 12 are erected on the foundation and on the lintel 6. Also, support materials 13 are attached to pillars 11 installed in the inside corners of the building and pillars 11 constituting the part where the window is installed.

[0058] In the structural material installation process, the building structural materials are installed so that the spacing between the building structural materials arranged in the vertical direction is either a first spacing X, a second spacing Y different from the first spacing X, or a third spacing Z different from the first spacing X and the second spacing Y. Specifically, the pillars 11, studs 12, receiving materials 13, etc. are installed so that the spacing between the pillars 11 and the studs 12 is the first spacing X, the spacing between the studs 12 is the second spacing Y, and the spacing between the receiving material 13 (the receiving material attached to the pillars 11) and the studs 12 is the third spacing Z. In addition, in the structural material installation process, other building structural materials (beams, braces 14, window sills 5, lintels 6, etc.) are also installed.

[0059] <Structural surface material installation process> Next, the load-bearing surface material 4 is installed, and the outdoor side of the building structural material is covered with the load-bearing surface material 4.

[0060] <Wiring process> Next, electrical equipment such as the wiring box 100 and the cable 110 are installed in a predetermined space among the spaces between the building structural members (pillars 11, studs 12, support members 13, etc.) installed in the vertical direction.

[0061] <Insulation installation process> Next, plate-shaped insulating material 20 is installed in the spaces between building structural members (pillars 11, studs 12, support members 13, etc.) that are installed in the vertical direction. Specifically, in the insulation installation step, a first plate-shaped insulation material 21 is installed in a space between building structural materials where the distance between the building structural materials is first distance X. That is, the first plate-shaped insulation material 21 is disposed between the pillar 11 and the stud 12, and fixed to the load-bearing surface material 4 or the like by a fixing means such as an adhesive. In the insulation installation process, second plate-shaped insulation 22 is installed in the space between the building structural materials, which is the second distance Y. That is, second plate-shaped insulation 22 is placed between the studs 12 and fixed to the load-bearing surface material 4 or the like by a fixing means such as an adhesive. In the insulation installation process, third plate-shaped insulation material 23 is installed in the space between the building structural materials where the distance is third distance Z. That is, third plate-shaped insulation material 23 is placed between receiving material 13 and stud 12, and fixed to load-bearing surface material 4 or the like by a fixing means such as an adhesive.

[0062] The insulation installation step includes a height adjustment step of adjusting the height dimension of the plate insulation material 20 so that it matches the height dimension of the installation space. The insulation installation process also includes a shape processing process in which the shape of the plate insulation 20 is processed from a rectangular shape to a triangular shape or a trapezoidal shape to avoid interference with the diagonal braces 14 installed in the installation space. In addition, the insulation material installation process includes a recess forming process of forming a first notch 20b, a second notch 20c, etc. in the plate-shaped insulation material 20 to avoid interference with electrical equipment (such as a wiring box 100 or a cable 110) installed in the installation space.

[0063] <Insulation installation process (around windows)> In the step of installing the heat insulating material around the window, a height adjustment step is performed. Hereinafter, an example of the step of installing the heat insulating material around the window will be described with reference to FIG. In the window surroundings, plate-shaped insulation material 20 is installed between the support material 13 supporting the window sill 5 and the studs 12, between the studs 12 supporting the window sill 5, between the pillar 11 supporting the lintel 6 and the studs 12 erected on the lintel 6, and between the studs 12 erected on the lintel 6.

[0064] For the plate-shaped insulation material 20 to be installed between the support material 13 supporting the window sill 5 and the partition 12, a thick third plate-shaped insulation material 23 is used and cut (to adjust the height dimension) to match the distance from the floor to the window sill 5 before installation. In addition, for the plate-shaped insulation material 20 to be installed between the studs 12 supporting the window sill 5, a thick second plate-shaped insulation material 22 is used and cut (to adjust the height dimension) to match the distance from the floor to the window sill 5 before installation.

[0065] For the plate-shaped insulation material 20 to be installed between the pillar 11 supporting the lintel 6 and the partition 12 erected on the lintel 6, a thick first plate-shaped insulation material 21 is used and cut (to adjust the height dimension) to match the distance from the lintel 6 to the ceiling before installation. In addition, for the plate-shaped insulation material 20 to be installed between the partition studs 12 erected on the lintel 6, a thick second plate-shaped insulation material 22 is used and cut (to adjust the height dimension) to match the distance from the lintel 6 to the ceiling before installation.

[0066] <Insulation installation process (bracing section)> In the step of installing the heat insulating material in the diagonal brace portion, a height adjustment step and a shape processing step are performed. An example of the step of installing the heat insulating material in the diagonal brace portion will be described below with reference to Figs. The insulation installation process in the diagonal brace section can be divided into two steps: a first step of placing the plate insulation 20 in the first space S1, and a second step of placing the plate insulation 20 in the second space S2. In this embodiment, the first step is performed first. In the first step, both the height adjustment step and the shape processing step are performed. In the second step, of the height adjustment step and the shape processing step, only the height adjustment step is performed.

[0067] In the first step, the area of ​​the first space S1 excluding the building structural materials (pillars 11, studs 12, supporting materials 13, diagonal braces 14, etc.) is divided into triangular areas [A] [D], trapezoidal areas [B] [E], and rectangular areas [C] [F], as shown in Figure 5, and plate-shaped insulation material 20 is placed in each area.

[0068] For the plate insulation material 20 to be placed in the triangular region [A] and the trapezoidal region [B], a thin first plate insulation material 21 is used, and the triangular plate insulation material 20 that fits the region [A] and the trapezoidal plate insulation material 20 that fits the region [B] are fabricated and then installed. A trapezoidal plate insulation 20 that fits into area [B] can be made by placing an end of a first plate insulation 21 against one end 14a of the diagonal brace 14 (i.e., the acute vertex of area [B]), marking the position of the diagonal lines of the diagonal brace 14, and then cutting (processing the shape). In addition, the triangular plate insulation material 20 that fits into area [A] can be produced by cutting (adjusting the height dimension) the remaining parts (triangular parts) to match the height dimension of area [A].

[0069] Similarly, for the plate insulation 20 to be placed in the triangular region [D] and the trapezoidal region [E], a thin first plate insulation 21 is used, and the triangular plate insulation 20 that fits the region [D] and the trapezoidal plate insulation 20 that fits the region [E] are fabricated and then installed. A trapezoidal plate insulation 20 that fits into area [E] can be made by placing the end of a first plate insulation 21 against the other end 14b of the diagonal brace 14 (i.e., the acute vertex of area [E]), marking the position of the diagonal lines of the diagonal brace 14, and then cutting (processing the shape). In addition, the triangular plate insulation material 20 that fits into area [D] can be produced by cutting (adjusting the height dimension) the remaining parts (triangular parts) to match the height dimension of area [D].

[0070] For the plate-shaped insulating material 20 to be placed in the rectangular area [C], a thin first plate-shaped insulating material 21 is used and is cut to fit the height dimension of area [C] (adjusting the height dimension) before installation. Furthermore, for the plate insulation 20 to be placed in the rectangular area [F], a thin first plate insulation 21 is used and is cut to fit the height dimension of area [F] (to adjust the height dimension) before installation.

[0071] In the second step, the thin first plate-shaped insulating material 21 is cut to fit the distance from the floor to the ceiling (the height dimension is adjusted) and then installed. If the height dimension of the installation space (here, the distance from the floor to the ceiling) is longer than the height dimension of the plate insulation material 20, multiple plate insulation materials 20 are installed lined up one above the other, as shown in Figure 3. At that time, the height dimension is adjusted (one of the multiple plate insulation materials 20 is cut) so that the total height dimension of the multiple plate insulation materials 20 matches the height dimension of the installation space. In this embodiment, from the viewpoint of improving workability (reducing the work load), a structure is considered in which the occurrence of bracing parts in the exterior wall 1 is minimized.

[0072] <Insulation installation process (wiring section)> In the step of installing the heat insulating material in the wiring portion, a height adjusting step and a recess forming step are performed. Hereinafter, an example of the step of installing the heat insulating material in the wiring portion will be described with reference to FIGS. The insulation installation process in the wiring section can be divided into three steps: a third step of placing the plate insulation 20 in the third space S3, a fourth step of placing the plate insulation 20 in the fourth space S4, and a fifth step of placing the plate insulation 20 in the fifth space S5. In this embodiment, the third step is performed first and the fifth step is performed last. In the third step, of the height adjustment step and the recess formation step, only the height adjustment step is performed. In the fourth step, both the height adjustment step and the recess formation step are performed. In the fifth step, both the height adjustment step and the recess formation step are performed.

[0073] In the third step, the thick first plate-shaped insulating material 21 is cut to fit the height dimension of the third space S3 (the height dimension is adjusted) and then installed. In the fourth step, the thick first plate-shaped insulating material 21 is cut (the height dimension is adjusted) to fit the height dimension of the fourth space S4, and then the first notch 20b is formed in a range that interferes with the wiring box 100 (specifically, the airtight cover 120 attached externally to the wiring box 100). Then, as shown in Fig. 8(b), with the cable 110 positioned within the first notch 20b, the insulating material is slid from the fifth space S5 to the fourth space S4 and installed.

[0074] In the fifth step, the thick first plate-shaped insulation material 21 is cut (the height dimension is adjusted) to match the height dimension of the fifth space S5, and then the second notch 20c is formed in the range that interferes with the cable 110. Furthermore, the thick first plate-shaped insulation material 21 is cut along the height direction near the center in the width direction to divide it into a first part 211 having the second notch 20c and a second part 212 not having the second notch 20c. Then, as shown in the upper diagram of FIG. 9(b), the first part 211 is slid and installed to a position where the cable 110 fits into the second notch 20c (i.e., to a position where it abuts against the pillar 11), and then the second part 212 is installed between the first part 211 and the partition 12, as shown in the lower diagram of FIG. 9(b).

[0075] <Insulation installation process (normal part)> In the insulation installation process for normal areas other than the window surrounding area, the diagonal brace area, and the wiring area, a height adjustment process is performed. Specifically, the thick plate insulation material 20 is cut to fit the height dimension of the installation space (adjusting the height dimension) and then installed. When the height dimension of the installation space is longer than the height dimension of the plate-shaped insulation material 20, multiple plate-shaped insulation materials 20 are installed lined up one above the other. At that time, the height dimension is adjusted (one of the multiple plate-shaped insulation materials 20 is cut) so that the total height dimension of the multiple plate-shaped insulation materials 20 matches the height dimension of the installation space.

[0076] <Fireproof surface material installation process> Next, the fireproof facing material 3 is installed to cover the indoor side of the building structural material. The construction of the exterior wall 1 is carried out through the steps (procedures) described above. The steps of constructing the exterior wall 1 may be carried out in a different order as necessary, provided that the order is changeable.

[0077] "effect" According to this embodiment, the following excellent effects are obtained. The construction method of this embodiment is a construction method for a wall (exterior wall 1) comprising building structural materials (pillars 11, studs 12, receiving materials 13, etc.) installed in the vertical direction and plate-shaped insulation materials 20 installed between the building structural materials, and includes a structural material installation step of installing the building structural materials, and an insulation material installation step of installing the plate-shaped insulation materials 20. In the structural material installation step, the building structural materials are installed so that the interval between the building structural materials is any one of a first interval X, a second interval Y different from the first interval X, and a third interval Z different from the first interval X and the second interval Y. In addition, in the insulation installation process, a first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 in locations where the distance between the building structural materials is the first distance X, a second plate-shaped insulation material 22 having a width dimension different from that of the first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 in locations where the distance between the building structural materials is the second distance Y, and a third plate-shaped insulation material 23 having a width dimension different from that of the first plate-shaped insulation material 21 and the second plate-shaped insulation material 22 is installed as the plate-shaped insulation material 20 in locations where the distance between the building structural materials is the third distance Z.

[0078] In other words, since there are only three types of spacing between building structural members, the first spacing X, the second spacing Y, and the third spacing Z, only three types (width dimensions) of plate insulation material 20 need to be prepared. Therefore, it does not take time to select plate insulation material 20 at the construction site, and there is no need to perform cutting work to adjust the width dimension of plate insulation material 20 at the construction site, improving the ease of construction of walls. Furthermore, when cutting plate insulation to the desired width at the construction site, a large amount of scrap material is generated, which has the disadvantage of increasing the amount of waste at the construction site and increasing disposal costs. In contrast, in this embodiment, cutting work is not performed at the construction site, so no scrap material is generated. Therefore, the amount of waste and disposal costs at the construction site can be reduced compared to when cutting work is performed at the construction site.

[0079] In this embodiment, from the viewpoint of improving workability (reducing work load), the structure is considered so that as far as possible, intervals other than the intervals X to Z (first interval X, second interval Y, third interval Z) occur as intervals between building structural members (pillars 11, studs 12, support members 13, etc.) installed in the vertical direction. Then, only when an interval other than the intervals X to Z occurs, such as when the pillars 11 are connected at intervals of 0.5 m, cutting work is performed at the construction site to adjust the width dimension of the plate-shaped insulating material 20. For example, in this embodiment, when the pillars 11 are connected at intervals of 0.5 m, the interval between the pillars 11 is 350 mm (= 455 mm - 52.5 mm - 52.5 mm). Therefore, the first plate-shaped insulating material 21 (plate-shaped insulating material 20 with a width dimension of 378 mm) is cut (adjusted width dimension) to fit the interval between the pillars 11, and then installed between the pillars 11.

[0080] In the construction method of this embodiment, when the space between the building structural materials (pillars 11, studs 12, receiving materials 13, etc.) is divided in the thickness direction into a first space S1 and a second space S2, the structural material installation process places the diagonal brace 14 in the first space S1, and the insulation material installation process places separate plate insulation materials 20 in the first space S1 and the second space S2. The diagonal brace 14 has a thickness dimension that is shorter than the thickness dimension of the building structural material. The plate insulation material 20 placed in the first space S1 has a thickness dimension that is the same as the thickness dimension of the diagonal brace 14, and has an inclined surface 20a that slopes along the diagonal brace 14.

[0081] Therefore, the first space S1, which is the space in which the diagonal brace 14 is arranged, i.e., the space having a thickness dimension approximately the same as that of the diagonal brace 14, can be blocked by plate-shaped insulation material 20 having an inclined surface 20a that inclines along the diagonal brace 14, thereby improving the insulation properties of the wall. In addition, since the plate-shaped insulation material 20 to be placed in the first space S1 only needs to be cut diagonally (so as to form an inclined surface 20a that slopes along the diagonal brace 14), the workability of the wall can be improved.

[0082] It is also possible not to install separate plate-shaped insulation materials 20 in the first space S1 and the second space S2, i.e., to install a single plate-shaped insulation material 20 across the first space S1 and the second space S2. In that case, however, in order to avoid interference with the diagonal braces 14, it is necessary to either cut the single plate-shaped insulation material 20 diagonally (cut so as to form an inclined surface 20a that slopes along the diagonal braces 14) or to form a groove in the single plate-shaped insulation material 20 to avoid interference with the diagonal braces 14. When one piece of plate-shaped insulation 20 is cut diagonally, the insulation cannot cover the diagonal braces 14. Therefore, in order to cover the diagonal braces 14 with insulation, it is necessary to process another plate-shaped insulation 20 into the same shape as the diagonal braces 14 and fit it between the inclined surfaces 20a, which reduces workability. Furthermore, when forming grooves in the single plate-shaped insulating material 20, it is necessary to form grooves of the same shape as the diagonal braces 14, which reduces workability.

[0083] In contrast, in this embodiment, separate plate insulation materials 20 are installed in the first space S1 and the second space S2, so that the plate insulation material 20 placed in the first space S1 can close the space between the building structural materials and the diagonal braces 14 installed in the vertical direction, and the plate insulation material 20 placed in the second space S2 can close the space between the building structural materials installed in the vertical direction. In other words, the plate insulation material 20 placed in the second space S2 can cover the diagonal braces 14, so the insulation properties of the wall can be improved compared to when the diagonal braces 14 are not covered by insulation material. Furthermore, in this embodiment, the plate insulation material 20 placed in the first space S1 and the plate insulation material 20 placed in the second space S2 are separate, so that simply cutting the plate insulation material 20 placed in the first space S1 at an angle (cutting so as to form the inclined surface 20a) at the construction site can avoid interference with the diagonal brace 14. This makes the work easier than forming a groove of the same shape as the diagonal brace 14 in the plate insulation material 20 at the construction site or processing another plate insulation material 20 into the same shape as the diagonal brace 14 at the construction site, improving the workability of the wall.

[0084] The construction method of this embodiment also includes a wiring step of installing a wiring box 100 for accommodating a wiring device and a cable 110 extending from the wiring device between building structural members (pillars 11, studs 12, support members 13, etc.), and when the space between the building structural members is divided in the height direction into a third space S3, a fourth space S4, and a fifth space S5, the wiring step includes installing the wiring box 100 in the fourth space S4 located between the third space S3 and the fifth space S5, and installing the cable 110 in the fifth space S5, and the insulating material installing step includes installing separate plate-shaped insulating materials 20 in the third space S3, the fourth space S4, and the fifth space S5. The plate-shaped insulating material 20 installed in the fourth space S4 has a first notch 20b in a range where it interferes with the wiring box 100. Furthermore, the plate-shaped insulation material 20 disposed in the fifth space S5 has a second notch 20c in an area where it interferes with the cable 110.

[0085] Therefore, the fourth space S4, which is the space in which the wiring box 100 is arranged, i.e., the space having height dimensions approximately the same as the height dimensions of the wiring box 100 (airtight cover 120), can be blocked by a plate-shaped insulation material 20 provided with a first notch 20b having a size (width dimension, thickness dimension) approximately the same as the size of the wiring box 100 (airtight cover 120), and the fifth space S5, which is the space in which the cable 110 is arranged, i.e., the space having height dimensions approximately the same as the height dimensions of the cable 110 (the distance from the wiring box 100 (airtight cover 120) to the ceiling), can be blocked by a plate-shaped insulation material 20 provided with a second notch 20c having a size (width dimension, thickness dimension) approximately the same as the size of the cable 110 (or the conduit protecting the cable 110), thereby improving the insulation of the wall. In addition, it is only necessary to form a first notch 20b in the plate-shaped insulation material 20 to be placed in the fourth space S4, the first notch having a size approximately the same as the size of the wiring box 100 (airtight cover 120), and to form a second notch 20c in the plate-shaped insulation material 20 to be placed in the fifth space S5, the second notch having a size approximately the same as the size of the cable 110 (or the conduit protecting the cable 110), thereby improving the workability of the wall.

[0086] It is also possible not to install separate plate-shaped insulation materials 20 in the third space S3 and the fourth space S4, i.e., to install a single plate-shaped insulation material 20 across the third space S3 and the fourth space S4. However, in that case, it is necessary to provide the first notch 20b only in the portion of the single plate-shaped insulation material 20 located in the fourth space S4, or to provide the first notch 20b not only in the portion located in the fourth space S4 but also in the portion located in the third space S3. If the first notch 20b is provided only in the portion located in the fourth space S4, and no notch is provided in the portion located in the third space S3, it will be necessary to form the first notch 20b at the construction site by forming a notch with one of the upper and lower ends (the end on the third space S3 side) blocked, which will reduce workability. Furthermore, when the first notch 20b is provided not only in the portion located in the fourth space S4 but also in the portion located in the third space S3, the loss of the insulating material is greater than when no notch is provided in the portion located in the third space S3, thereby reducing the insulating properties.

[0087] In contrast, in the present embodiment, separate plate-shaped insulation materials 20 are installed in the third space S3 and the fourth space S4, and a first notch 20b is provided only in the plate-shaped insulation material 20 placed in the fourth space S4, and no notch is provided in the plate-shaped insulation material 20 placed in the third space S3. Therefore, compared to the case where notches are provided not only in the portion located in the fourth space S4 but also in the portion located in the third space S3, loss of the insulating material is small, so that the insulating properties of the wall can be improved. In addition, since the plate-shaped insulation material 20 arranged in the third space S3 and the plate-shaped insulation material 20 arranged in the fourth space S4 are separate bodies, a notch with both upper and lower ends open can be formed as the first notch 20b. This makes the work easier than forming a notch with one end of both upper and lower ends closed, improving the workability of the wall.

[0088] It is also possible not to install separate plate-shaped insulation materials 20 in the fourth space S4 and the fifth space S5, i.e., to install a single plate-shaped insulation material 20 across the fourth space S4 and the fifth space S5. However, in that case, it is necessary to provide the first notch 20b not only in the portion of the single plate-shaped insulation material 20 located in the fourth space S4 but also in the portion located in the fifth space S5, or to provide the first notch 20b in the portion located in the fourth space S4 and the second notch 20c in the portion located in the fifth space S5. When the first notch 20b is provided not only in the portion located in the fourth space S4 but also in the portion located in the fifth space S5, the loss of insulation material is greater than when the second notch 20c is provided in the portion located in the fifth space S5, and therefore the insulation properties are reduced. Furthermore, when a first notch 20b is provided in a portion located in the fourth space S4 and a second notch 20c is provided in a portion located in the fifth space S5, i.e., when the first notch 20b and the second notch 20c are formed integrally, loss of insulation material can be minimized; however, workability is reduced because it is necessary to form a notch in the shape of two rectangular parallelepipeds of different sizes (width and thickness) combined one above the other at the construction site.

[0089] In contrast, in the present embodiment, separate plate-shaped insulation materials 20 are installed in the fourth space S4 and the fifth space S5, and a first notch 20b is provided in the plate-shaped insulation material 20 placed in the fourth space S4, and a second notch 20c is provided in the plate-shaped insulation material 20 placed in the fifth space S5. Therefore, compared to the case where the first notch 20b is provided not only in the portion located in the fourth space S4 but also in the portion located in the fifth space S5, the loss of insulation material is smaller, thereby improving the insulation properties of the wall. In addition, since the plate-shaped insulation material 20 arranged in the fourth space S4 and the plate-shaped insulation material 20 arranged in the fifth space S5 are separate bodies, the first notch 20b and the second notch 20c can be formed separately. This makes the work easier than when the first notch 20b and the second notch 20c are integrally formed, improving the workability of the wall.

[0090] The construction method of this embodiment also includes a fireproof facing material installation process for installing the fireproof facing material 3. The plate-shaped insulation material 20 is covered by the fireproof facing material 3 with a gap 30 provided between the plate-shaped insulation material 20 and the fireproof facing material 3. That is, a gap 30 is provided between the plate-shaped insulation material 20 and the fire-resistant surface material 3 that covers the plate-shaped insulation material 20. Therefore, the gap 30 can be used for wiring electric wires, communication lines, and the like.

[0091] It is also possible to not provide a gap 30 between the plate insulation material 20 and the fire-resistant surface material 3, i.e., to set the thickness dimension of the thick plate insulation material 20 and the thickness dimension of two thin plate insulation materials 20 stacked together to be the same as the thickness dimension of the building structural materials (pillars 11, studs 12, support material 13, etc.) installed in the vertical direction. However, since a plate insulation material 20 with a thickness dimension of 90 mm can provide sufficient insulation, in this embodiment, a plate insulation material 20 with a thickness dimension of 90 mm (thick plate insulation material 20) is used without being stacked, or two plate insulation materials 20 with a thickness dimension of 45 mm (thin plate insulation material 20) are used in a stacked state.

[0092] In addition, the wall structure of this embodiment is a wall structure comprising building structural members (pillars 11, studs 12, support members 13, etc.) installed in the vertical direction, and plate-shaped insulation material 20 installed between the building structural members, and the building structural members are installed so that the interval between the building structural members is either a first interval X, a second interval Y different from the first interval X, or a third interval Z different from the first interval X and the second interval Y. A first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 where the interval between the building structural members is the first interval X, a second plate-shaped insulation material 22 having a width dimension different from that of the first plate-shaped insulation material 21 is installed as the plate-shaped insulation material 20 where the interval between the building structural members is the second interval Y, and a third plate-shaped insulation material 23 having a width dimension different from that of the first plate-shaped insulation material 21 and the second plate-shaped insulation material 22 is installed as the plate-shaped insulation material 20 where the interval between the building structural members is the third interval Z.

[0093] In other words, since there are only three types of spacing between building structural members, the first spacing X, the second spacing Y, and the third spacing Z, only three types (width dimensions) of plate insulation material 20 need to be prepared. Therefore, it does not take time to select plate insulation material 20 at the construction site, and there is no need to perform cutting work to adjust the width dimension of plate insulation material 20 at the construction site, improving the ease of construction of walls.

[0094] In recent years, there has been a demand for the realization of a decarbonized society through the promotion of carbon neutrality, which reduces carbon dioxide emissions to virtually zero, and for the achievement of the SDGs (Sustainable Development Goals), and in the construction industry, efforts are being made to build buildings out of wood, which has low carbon dioxide emissions. The building of this embodiment is constructed from wooden building structural materials, and can contribute to the realization of a decarbonized society through the promotion of carbon neutrality and the achievement of the SDGs. [Explanation of symbols]

[0095] 1 External wall (wall) 3. Fireproof Surface Materials 11 Pillars (building structural materials) 12 Studs (building structural materials) 13 Supporting materials (building structural materials) 14 Bracing 20 Plate insulation material 20a Slope 20b First notch 20c Second notch 21 First plate-shaped insulation material 22 Second plate-shaped insulation material 23 Third plate insulation material 30 Gap 100 Wiring Box 110 Cable S1 first space S2 Second space S3 third space S4 fourth space S5 Fifth space X first interval Y second interval Z third interval

Claims

1. A method for constructing a wall including building structural members installed in a vertical direction and plate-shaped insulation materials installed between the building structural members, comprising: A structural material installation process for installing the building structural material; and an insulation installation step of installing the plate-shaped insulation material, In the structural material installation step, the building structural materials are installed so that the intervals between the building structural materials are either a first interval, a second interval different from the first interval, or a third interval different from the first interval and the second interval; In the heat insulation installation process, A first plate-shaped insulation material is installed as the plate-shaped insulation material at a location where the interval between the building structural members is the first interval, a second plate-shaped insulation material having a width dimension different from that of the first plate-shaped insulation material is installed as the plate-shaped insulation material at a location where the interval between the building structural members is the second interval; A wall construction method characterized by installing a third plate-shaped insulation material having a width dimension different from that of the first plate-shaped insulation material and the second plate-shaped insulation material as the plate-shaped insulation material at a location where the distance between the building structural materials is the third distance.

2. The wall construction method according to claim 1, When the space between the building structural members is divided into a first space and a second space in the thickness direction, In the structural material installation step, a brace is placed in the first space, In the heat insulating material installation step, separate plate-shaped heat insulating materials are arranged in the first space and the second space, The thickness dimension of the brace is shorter than the thickness dimension of the building structural material, The plate-shaped insulating material to be disposed in the first space is The thickness dimension is the same as the thickness dimension of the diagonal brace, A wall construction method characterized in that the wall has an inclined surface that slopes along the diagonal braces.

3. A wall construction method according to claim 1, A wiring process is provided for installing a wiring box for accommodating a wiring device and a cable extending from the wiring device between the building structural members, When the space between the building structural members is divided into a third space, a fourth space, and a fifth space in the height direction, In the wiring step, The wiring box is disposed in the fourth space located between the third space and the fifth space, The cable is disposed in the fifth space; In the insulating material installation step, separate plate-shaped insulating materials are arranged in the third space, the fourth space, and the fifth space, The plate-shaped insulation material to be disposed in the fourth space has a first notch in a range where it interferes with the wiring box, A wall construction method characterized in that the plate-shaped insulation material to be placed in the fifth space has a second notch in the area where it interferes with the cable.

4. The wall construction method according to claim 1, The method includes a fireproof surface material installation process for installing a fireproof surface material, A wall construction method characterized in that the plate-shaped insulation material is covered by the fire-resistant facing material with a gap provided between the plate-shaped insulation material and the fire-resistant facing material.

5. A wall structure comprising a building structural member installed in a vertical direction and a plate-shaped insulation material installed between the building structural members, the building structural materials are installed such that the intervals between the building structural materials are either a first interval, a second interval different from the first interval, or a third interval different from the first interval and the second interval; A first plate-shaped insulation material is installed as the plate-shaped insulation material at a location where the interval between the building structural members is the first interval, a second plate-shaped insulation material having a width dimension different from that of the first plate-shaped insulation material is installed as the plate-shaped insulation material in a location where the interval between the building structural materials is the second interval; A wall structure characterized in that, in the locations where the distance between the building structural materials is the third distance, a third plate-shaped insulation material having a width dimension different from that of the first plate-shaped insulation material and the second plate-shaped insulation material is installed as the plate-shaped insulation material.

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