JP7392675B2 - Parting wall structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to a parting wall structure that partitions each dwelling unit of a building.

The parting wall structure that separates each dwelling unit in a building is required to have a certain level of fire resistance. In this case, the parting wall structure is required to have fire resistance not only in the parting wall located in the living space but also in the attic parting wall located in the attic space. . For this reason, gypsum board or the like is used as the parting wall material constituting the parting wall structure, including the attic parting wall.

In the attic space where the attic parting wall part is provided, there is a first beam to which the parting wall material is attached, a second beam connected perpendicularly to the first beam, and a second beam connected to the attic parting wall in the inclination direction from the first beam. An extending load-bearing brace is provided. When disposing a parting wall material along the first beam in such an attic space, as described in Patent Document 1, a notch is provided to avoid interference with the second beam and the load-bearing brace. It will be formed on the parting wall material.

Patent No. 2847384

The work of forming notches in the parting wall material is performed by a builder at the construction site. At this time, in order to set the length of the notch to be formed in the parting wall material, the constructor performs the task of measuring the gap between the second beam and the load-bearing brace. It is necessary to perform this work for each location, and this work is extremely troublesome for the constructor. For this reason, there is a possibility that the construction efficiency of the parting wall structure will be reduced.

Moreover, if a large notch is formed in the parting wall material to avoid interference with the second beam and the load-bearing brace all at once, there will be no parting wall material with fire resistance in the attic parting wall. Since the area of the gap increases, there is a risk that the work to fill the gap will increase in order to maintain the fire resistance of the attic parting wall.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a parting wall material that can improve the construction efficiency of a parting wall structure.

A parting wall structure according to one aspect of the present invention is a parting wall structure that partitions each dwelling unit of a building. This parting wall structure includes a first beam extending in a first horizontal direction, a second beam extending from a side surface of the first beam in a second horizontal direction perpendicular to the first horizontal direction, and a second beam extending from a side surface of the first beam in a second horizontal direction perpendicular to the first horizontal direction. A load-bearing brace that extends from a position a predetermined distance away from the connection portion of the second beam in the first horizontal direction, and the load-bearing brace extends in an inclined manner away from the second beam as the distance from the first beam increases. The present invention includes a brace and a parting wall material attached to a side surface of the first beam from the second beam side. The parting wall material is a covering part for covering a side surface of the first beam, and is a covering part that can receive a beam-side inserted part set in advance on the second beam from one side in the first horizontal direction. a second notch that can receive a brace-side inserted part that is set in advance on the load-bearing brace from the other side in the first horizontal direction; An extension part extending to. The covering portion is interposed between the first notch portion and the second notch portion such that the first notch portion and the second notch portion are spaced apart from each other in the first horizontal direction. It has a connecting part.

According to this parting wall material, it constitutes a parting wall structure that partitions each dwelling unit of a building, and includes a covering part for covering the side surface of the first beam, and an extension extending downward from the covering part. It is equipped with a section. The covering part of the parting wall material has a first notch part that can accept a beam side inserted part set in advance on the second beam, and a second notch part that can accept a brace side inserted part set in advance on the load-bearing brace. It has a notch portion and a connecting portion interposed between the first notch portion and the second notch portion. In the covering part having such a configuration, the first notch part receives the beam-side inserted part to avoid interference with the second beam, and the second notch part receives the inserted part on the beam side to avoid interference with the load-bearing brace. receives the brace-side inserted portion, and the connecting portion is disposed in the gap between the second beam and the load-bearing brace, and the covering portion can cover the side surface of the first beam.

At this time, in the parting wall material, the first notch part and the second notch part for receiving the beam side inserted part and the brace side inserted part are previously formed in the covering part, so the builder can: In order to set the length of the notch, there is no need to perform work to measure the dimension of the gap between the second beam and the load-bearing brace or work to form the notch at the construction site. Therefore, it is possible to improve the construction efficiency of the parting wall structure. Moreover, since the connecting part is arranged in the gap between the second beam and the load-bearing brace while the side surface of the first beam is covered by the covering part, fire resistance is achieved according to the formation of the notch in the parting wall structure. It is possible to prevent the area of the gap portion where no parting wall material is present from increasing as much as possible. Therefore, it is possible to suppress a decrease in the fire resistance of the parting wall structure, and it is also possible to improve the efficiency of filling the gap portion.

In the above parting wall structure , the covering portion and the extending portion adjust the length of the second notch in the first horizontal direction according to the inclination angle of the load-bearing brace with respect to the second beam. It has a cutting mark line that serves as a mark for cutting the covering portion and the extending portion in order to adjust the entire length of the brace-side inserted portion in the first horizontal direction to the shortest acceptable length.

In this aspect, by cutting the covering part and the extending part along the cutting mark line, the length of the second notch part is adjusted according to the inclination angle of the load-bearing brace with respect to the second beam. The entire length in the first horizontal direction can be adjusted to the shortest acceptable length. Thereby, in accordance with the formation of the second notch in the parting wall structure, the area of the gap portion where no parting wall material is present can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure, and it is also possible to further improve the efficiency of filling the gap portion.

In the above parting wall structure , the second beam has a recess that is depressed in a direction away from the load-bearing brace with the beam-side inserted portion as a reference at a portion closer to the first beam than the beam-side inserted portion. are doing. The thickness of the boundary wall material is set such that the connecting portion can be inserted into the gap formed between the first beam and the beam-side inserted portion of the second beam by the recess. The width dimension of the connecting portion in the first horizontal direction is set to be equal to the width between the beam-side inserted portion of the second beam and the load-bearing brace when viewed along the second horizontal direction. The minimum gap is set to a value greater than or equal to the dimension on the first beam.

In this aspect, in the parting wall material, the width dimension of the connecting part of the covering part is set to a value greater than or equal to the dimension on the first beam of the minimum gap between the beam-side inserted part of the second beam and the load-bearing brace. In addition, the connecting portion can be inserted into the gap between the first beam and the beam-side inserted portion. In such a configuration, in a state where the side surface of the first beam is covered by the covering part, the connecting part is inserted into the gap between the first beam and the beam-side inserted part and connects the second beam and the load-bearing brace. placed in the gap between Thereby, the area of the gap portion where no parting wall material is present in the gap between the first beam and the beam-side inserted portion can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure, and it is also possible to further improve the efficiency of filling the gap portion.

Also, when attaching the parting wall material to the side of the first beam from the second beam side, the attitude of the parting wall material is inclined with respect to the side of the first beam between the second beam and the load-bearing brace. The parting wall material is rotated and moved toward the second beam so that the parting wall material changes its posture from a posture along the side surface to a posture along the side surface. As a result, even if the connecting part has a large width, the connecting part can be placed in the gap between the second beam and the load-bearing brace while being inserted into the gap between the first beam and the beam-side inserted part. A parting wall material can be attached to the side surface of the first beam so as to

The above-mentioned parting wall structure includes an underlay material made of the above-mentioned parting wall material, and an overlay material that is stacked on the underlay material from the opposite side of the first beam . The upper covering material is a covering part for covering the covering part of the underlaying material, and is capable of receiving the beam-side inserted part of the second beam from one side in the first horizontal direction. a first top notch, a second top notch capable of receiving the brace-side inserted portion of the load-bearing brace from the other side in the first horizontal direction, and a first top notch. an overlay connecting portion interposed between the first overlay notch and the second overlay notch such that the second overlay notch is spaced apart from each other in the first horizontal direction; , and a top covering portion extending downward from the top covering portion and covering the extending portion of the underlay material. In a state in which the top covering material is stacked on the underlay material, the end surface of the top covering connecting portion on the second top covering notch portion side is configured to: The connecting portion of the underlay material is located at a position farther from the second beam than the end surface of the connecting portion on the second notch side.

According to this parting wall material, an underlayment made of the above-mentioned parting wall material includes a covering portion and an extension portion, and an overlaying material that is overlapped with the underlayment material and includes an overlay covering portion and an overlay extension portion. It is composed of a double structure containing materials. In such a double structure parting wall material, in the top sheathing part of the top lining material, the first top notch part receives the beam side inserted part so as to avoid interference with the second beam, and With the second overlay notch receiving the brace-side inserted portion to avoid interference with the load-bearing brace, and with the overlay connecting portion disposed in the gap between the second beam and the load-bearing brace. , the covering portion of the underlayment material can be covered by the top covering portion. Thereby, the fire resistance of the parting wall material can be improved compared to the case of a single layer structure.

Moreover, in a state where the top lining material is stacked on the underlay material, the top lining connecting portion in the top lining material differs in the first horizontal direction from the connecting portion in the bottom lining material, depending on the inclination of the load-bearing brace with respect to the second beam. Located in position. Specifically, the end surface of the overlay connecting portion on the second overlay notch side is wider than the end surface of the underlay connecting portion on the second notch side, depending on the inclination of the load-bearing brace with respect to the second beam. It is located away from the second beam. As a result, the area of the gap between the second beam and the load-bearing brace on the underlayment material, where no overlay material is present, can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure, and it is also possible to improve the efficiency of filling the gap portion.

In the above parting wall structure , in a state in which the top covering material is stacked on the underlay material, the end surface of the top covering portion and the top covering extension portion of the top covering material on the other side in the first horizontal direction is located at a position farther from the second beam than the other end surface of the covering portion and the extending portion of the underlay material in the first horizontal direction.

Further, in the above parting wall structure , in the underlayment, the covering portion and the extending portion are arranged in the first horizontal direction of the second notch portion according to the inclination angle of the load-bearing brace with respect to the second beam. A cutting mark line that serves as a mark for cutting the covering portion and the extending portion in order to adjust the length to the shortest length that can accept the entirety of the brace-side inserted portion in the first horizontal direction. have. Further, in the top covering material, the top covering portion and the top covering extension portion are arranged in the first horizontal direction of the second top notch portion according to the inclination angle of the load-bearing brace with respect to the second beam. Serves as a mark for cutting the top covering part and the top covering extension part in order to adjust the length to the shortest length that can accept the whole of the brace side inserted part in the first horizontal direction. It has an overlay cutting mark line. In a state where the top covering material is stacked on the underlay material, the end surfaces of the top covering portion and the top covering extension portion of the top covering material after cutting along the top cutting mark line are: It is located at a position further away from the second beam than the end face of the covering portion and the extending portion of the underlayment material after cutting along the cutting mark line.

In this aspect, when another normal parting wall material is butted against each of the top lining material and the bottom lining material from the other side in the first horizontal direction in a state where the top lining material is stacked on the bottom lining material, the other parting wall material in the top lining material The butting position of the side end face or end face after cutting along the cutting mark line of the underlayment and other normal parting wall material is the position where the end face of the other side of the underlayment material or the end face after cutting along the cutting mark line and the other Normally, the butting position with the parting wall material is different in the first horizontal direction. Therefore, communication between the abutting portion between the underlay material and the normal parting wall material and the abutting portion between the top covering material and the normal parting wall material can be avoided. Thereby, it is possible to suppress a decrease in the fire resistance of the parting wall structure due to the abutting portion.

In the above parting wall structure , the underlayment material includes a first underlayment material and a second underlayment material that are attached to the side surfaces of the first beam with the second beam in between, and have end surfaces that can be butted against each other. , the top covering material includes a first top covering material and a second covering material which are stacked on the first underlining material and the second bottom covering material, respectively, and have end surfaces that can be butted against each other. The abutment position between the first underlayment material and the second underlayment material and the abutment position between the first overlay material and the second overlay material are different in the first horizontal direction. ing.

In this aspect, the butt position between the first underlay material and the second underlay material that constitute the underlay material, and the butt position between the first overlay material and the second overlay material that constitute the overlay material; are different in the first horizontal direction. Therefore, it is possible to avoid communication between the butt portion between the first underlay material and the second underlay material and the butt portion between the first overlay material and the second overlay material. . Thereby, it is possible to suppress a decrease in the fire resistance of the parting wall structure due to the abutting portion.

As explained above, according to the present invention, it is possible to provide a parting wall material that can improve the construction efficiency of a parting wall structure.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the schematic structure of the building to which the parting wall structure comprised by the parting wall material based on one Embodiment of this invention is applied. It is a perspective view showing the positional relationship between a first beam, a second beam, a load-bearing brace, and a parting wall structure arranged in an attic space of a building. It is a figure which shows the positional relationship of a 1st beam, a 2nd beam, and a load-bearing brace in the attic space of a building, Comprising: It is a figure seen from the downward side. It is a sectional view when an attic partitioning wall material constituting an attic partitioning wall portion in the partitioning wall structure is viewed from the lower side. It is a top view of the state where each underlay material of the normal parting wall material and precut parting wall material which constitute an attic parting wall material is attached along a 1st beam. It is a top view of the state where the covering material of each of the normal parting wall material and the precut parting wall material which constitute an attic parting wall material is attached along a 1st beam. It is a top view which shows the 1st underlayment material and the 2nd underlayment material which constitute the precut underlayment material of a precut parting wall material. It is a top view which shows the 1st covering material and the 2nd covering material which constitute the precut covering material of a precut parting wall material.

Hereinafter, a boundary wall material according to an embodiment of the present invention will be described based on the drawings.

[About buildings to which parting wall structure is applied]
As shown in FIG. 1, a building 100 to which a parting wall structure 1 made of a parting wall material according to an embodiment of the present invention is applied is, for example, an apartment complex having a plurality of dwelling units. In the example of FIG. 1, building 100 is a multi-story housing complex. In this case, the parting wall structure 1 partitions the space between the flooring material 101 on the lower floor and the ceiling material 102 into a plurality of living spaces S2 corresponding to each dwelling unit, and also partitions the space between the flooring material 101 and the ceiling material 102 on the lower floor into a plurality of living spaces S2. The space between them is partitioned into a plurality of attic spaces S1 corresponding to each dwelling unit. In each dwelling unit of the building 100, a living space S2 is located below the attic space S1 in the vertical direction D1.

As shown in FIG. 2 in addition to FIG. An extending beam 10S is provided.

The first beam 10 is a beam extending in a first horizontal direction D2 orthogonal to the vertical direction D1. The first beam 10 supports the flooring 103 of the upper floor from below, and also defines the direction in which the parting wall structure 1 extends. That is, the parting wall structure 1 is arranged along the first beam 10. The first beam 10 is made of steel with an H-shaped cross section. Specifically, the first beam 10 includes a first beam main body 10A extending in a first horizontal direction D2, and a first beam main body 10A extending in a second horizontal direction D3 perpendicular to the first horizontal direction D2 from the upper end of the first beam main body 10A. The first beam main body 10A has a first upper flange portion 10B and a first lower flange portion 10C protruding from the lower end of the first beam main body 10A in the second horizontal direction D3. The first beam 10 supports the upper floor flooring 103 at the first upper flange portion 10B, and allows attachment of the support portion 8 for supporting the parting wall structure 1 at the first lower flange portion 10C. Note that, as shown in FIG. 2, a beam 10S is provided so as to extend parallel to the first beam 10 at a predetermined interval in the second horizontal direction D3. Like the first beam 10, this beam 10S is made of steel with an H-shaped cross section, and has an upper flange portion and a lower flange portion.

The second beam 11 is a beam extending from the side surface of the first beam 10 in a second horizontal direction D3 orthogonal to the first horizontal direction D2, and is connected to the first beam 10. A plurality of second beams 11 are connected to the first beam 10 at predetermined intervals in the first horizontal direction D2. The second beam 11 supports the upper floor flooring 103 from below. The second beam 11, like the first beam 10, is made of a steel material with an H-shaped cross section. Specifically, the second beam 11 includes a second beam body 11A extending in the second horizontal direction D3 and connected to the first beam body 10A of the first beam 10, and a first beam body 11A extending from the upper end of the second beam body 11A. It has a second upper flange portion 11B that protrudes in the horizontal direction D2, and a second lower flange portion 11C that protrudes in the first horizontal direction D2 from the lower end of the second beam main body 11A. The second beam 11 supports the floor material 103 of the upper floor at the second upper flange portion 11B.

In this embodiment, as shown in FIG. 3, the second beam 11 is connected to the first beam 10 via a connecting member 11D extending in the second horizontal direction D3. The connection member 11D connects the first beam body 10A of the first beam 10 and the second beam body 11A of the second beam 11. As a result, the second beam 11 has a concave portion that is depressed in a direction away from the load-bearing brace 12 to the connection member 11D with the second lower flange portion 11C as a reference at a portion closer to the first beam 10 than the second lower flange portion 11C. are doing. A gap GP is formed between the first beam 10 and the second lower flange portion 11C of the second beam 11 by this recess. In other words, the second beam 11 is connected to the first beam 10 via the connecting member 11D so that a gap GP is formed between the first beam 10 and the second lower flange portion 11C. A portion of the connecting member 11D is exposed in the gap GP between the first beam 10 and the second lower flange portion 11C.

The load-bearing brace 12 is a linear member installed between the first lower flange portion 10C of the first beam 10 and the lower flange portion of the beam 10S, and reinforces the structure of the building 100. A plurality of load-bearing braces 12 are installed between the first beam 10 and the beam 10S. The load-bearing brace 12 extends toward the beam 10S from a position that is a predetermined distance away from the connection portion of the second beam 11 on the side surface of the first beam 10 in the first horizontal direction D2. In this embodiment, the load-bearing brace 12 extends at an angle with respect to the second beam 11 so as to move away from the second beam 11 as it moves away from the first beam 10, and is connected to the lower flange portion of the beam 10S.

As shown in FIG. 3, when focusing on one second beam 11, load-bearing braces 12 are installed on both sides of the second beam 11 in the first horizontal direction D2. In the example of FIG. 3, the load-bearing brace 12 installed on one side of the second beam 11 in the first horizontal direction D2 extends so as to be inclined at an inclination angle α with respect to the second beam 11. The load-bearing brace 12 installed on the other side in the first horizontal direction D2 extends so as to be inclined at an inclination angle β with respect to the second beam 11. The inclination angles α and β of the load-bearing brace 12 with respect to the second beam 11 are determined by the sides of the right triangle RT that is imaginary between the second beam 11 and the load-bearing brace 12 when looking up from below the installation location of the load-bearing brace 12. It can be estimated by the ratio. Specifically, the right triangle RT has a hypotenuse c as a straight line extending along the load-bearing brace 12, an opposite side b as a straight line extending along the second beam 11, and a vertical line extending from the second beam 11 toward the load-bearing brace 12. It is a right triangle whose base a is a straight line extending to . The inclination angles α and β of the load-bearing brace 12 with respect to the second beam 11 can be estimated based on the ratio of the lengths of the base a and the opposite side b of the right triangle RT. The inclination angle of the load-bearing brace 12 with respect to the second beam 11 is not constant, and a different inclination angle is set for each installation location of the load-bearing brace 12. In the example of FIG. 3, the inclination angle α is set to be smaller than the inclination angle β.

Note that, from a viewpoint viewed along the second horizontal direction D3, the distance between the second lower flange portion 11C of the second beam 11 and the load-bearing brace 12 on the protruding end surface of the first lower flange portion 10C of the first beam 10 is The minimum gap dimension (hereinafter referred to as "standard gap dimension") GL1 varies depending on the inclination angle of the load-bearing brace 12 with respect to the second beam 11, and as the inclination angle becomes smaller, the standard gap dimension GL1 becomes smaller. . Also, the separation distance (hereinafter referred to as "reference separation distance") GL2 from the corner of the second lower flange portion 11C of the second beam 11 facing the first beam 10 to the load-bearing brace 12 along the first horizontal direction D2 This also differs depending on the inclination angle of the load-bearing brace 12 with respect to the second beam 11, and as the inclination angle becomes smaller, the reference separation distance GL2 becomes smaller. Note that the reference separation distance GL2 is a larger value than the reference gap dimension GL1.

[About parting wall structure]
As shown in FIG. 2, the parting wall structure 1 that partitions each dwelling unit of the building 100 is arranged along the first beam 10. The parting wall structure 1 includes an attic parting wall part 2A, a living parting wall part 2B, and a support part 8.

The attic partition wall 2A constitutes a partition wall located in the attic space S1 of the building 100 in the partition wall structure 1, and includes an attic partition wall material 3. The attic partition wall material 3 is a plate-shaped wall material having fire resistance, and is made of, for example, gypsum board. Details of this attic partition wall material 3 will be described later.

The residential partition wall 2B constitutes a partition wall located within the living space S2 of the building 100 in the partition wall structure 1, and includes a residential partition wall material 2B1. The residential boundary wall material 2B1 is a plate-shaped wall material having fire resistance, and is made of, for example, gypsum board. The residential partition wall material 2B1 is arranged with its upper end butted against the lower end of the attic partition wall material 3. In this embodiment, the residential wall material 2B1 has a double structure consisting of an underlay material 2B11 and a top lining material 2B12 that is stacked on the underlay material 2B11. Thereby, the fire resistance of the residential boundary wall material 2B1 can be improved compared to the case of a single layer structure.

The support portion 8 is a structure for supporting the attic partition wall material 3 and the residential partition wall material 2B1 in the partition wall structure 1. As shown in FIG. 2, the support portion 8 includes an upper runner 81, a lower runner 82, a partition stud 83, and a receiving member 84.

The upper runner 81 is a frame member attached to the lower surface of the first lower flange portion 10C of the first beam 10 so as to extend in the first horizontal direction D2. The lower runner 82 is a frame member disposed below the upper runner 81 so as to extend in the first horizontal direction D2. Parting wall stud 83 is a rectangular cylindrical pillar member, and is erected between upper runner 81 and lower runner 82 so as to extend in the vertical direction D1. A plurality of partition wall studs 83 are erected between the upper runner 81 and the lower runner 82. Each parting wall stud 83 has an upper end fixed to the upper runner 81 and a lower end fixed to the lower runner 82. The receiving member 84 is a member fixed to the floor material 103 of the upper floor so as to protrude from the edge of the first upper flange portion 10B of the first beam 10 in the second horizontal direction D3. Note that the receiving member 84 may be fixed to the first upper flange portion 10B of the first beam 10.

The support part 8 configured as described above is configured such that the attic partition wall material 3 and the residential partition wall material 2B1 are fixed to the partition wall stud 83 with screw members. Support wall material 2B1. At this time, the upper end of the attic partition wall material 3 is screwed to the receiving member 84. Further, the attic partitioning wall material 3 may be fixed to the partitioning wall stud 83 with screws, and may also be fixed to the upper runner 81 with screws. Similarly, the residential boundary wall material 2B1 may be screwed to the boundary wall stud 83 and may also be screwed to the lower runner 82.

[About attic wall materials]
Next, with reference to FIGS. 4 to 8 in addition to FIGS. 2 and 3, the attic partition wall material 3 constituting the attic partition wall portion 2A of the partition wall structure 1 will be described in detail.

The attic partition wall material 3 is a fire-resistant plate-shaped wall material that is supported by the support part 8 and is disposed along the first beam 10 in the attic space S1 of the building 100. . The attic parting wall material 3 is adjacent to the pre-cut parting wall material 5 disposed at a position near the connecting portion of the second beam 11 on the side surface of the first beam 10, and the pre-cut parting wall material 5 in the first horizontal direction D2. It is usually composed of a parting wall material 4 that is arranged as follows.

Normally, the partition wall material 4 is formed into a rectangular plate shape. Normally, the parting wall material 4 is disposed so as to cover the side surface of the first beam 10 other than the position near the connection portion with the second beam 11. At this time, the normal parting wall material 4 is disposed such that its lower end is butted against the upper end of the residential parting wall material 2B1, and its end in the first horizontal direction D2 is butted against the precut parting wall material 5. Note that the upper end of the normal boundary wall material 4 is screwed to the receiving member 84, and the area other than the upper end is screwed to the boundary wall stud 83. In this embodiment, the normal parting wall material 4 has a double structure consisting of an underlay material 41 and an overlay material 42 overlaid on the underlay material 41, similar to the residential parting wall material 2B1. Thereby, the fire resistance of the normal parting wall material 4 can be improved compared to the case of a single layer structure.

[About pre-cut parting wall materials]
The pre-cut parting wall material 5 is disposed so as to cover the side surface of the first beam 10 in the vicinity of the connection portion with the second beam 11. The precut parting wall material 5 is a parting wall material for configuring the attic parting wall portion 2A of the parting wall structure 1 by being attached to the side surface of the first beam 10 from the second beam 11 side. In this embodiment, the pre-cut parting wall material 5 has a double structure consisting of a pre-cut underlay material 6 and a pre-cut overlay material 7 which is stacked on the pre-cut underlay material 6 from the opposite side of the first beam 10. There is. Thereby, the fire resistance of the precut partition wall material 5 can be improved compared to the case of a single layer structure.

The thickness of the pre-cut underlayment material 6 is set to a value smaller than the dimension of the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. The thickness of the precut covering material 7 is not particularly limited. In this embodiment, the total thickness of both the pre-cut underlay material 6 and the pre-cut overlay material 7 is, for example, larger than the dimension of the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. big.

<Structure of pre-cut underlayment material>
As shown in FIGS. 5 and 7, the precut underlayment material 6 is a first underlayment material attached to the side surface of the first beam 10 so as to be arranged side by side in the first horizontal direction D2 with the second beam 11 in between. 61 and a second underlay member 62. The first underlay material 61 is arranged on one side of the second beam 11 in the first horizontal direction D2, and the second underlay material 62 is arranged on the other side of the second beam 11 in the first horizontal direction D2.

The first underlay material 61 is a parting wall material for configuring the attic parting wall part 2A of the parting wall structure 1, and includes a plate-shaped covering part 611 for covering the side surface of the first beam 10, and a covering part 611 and a plate-shaped extension portion 612 extending downward.

The covering portion 611 includes a covering main body 6111, a first notch portion 6112, a second notch portion 6113, a connecting portion 6114, and a third notch portion 6115.

The covering body 6111 is formed into a rectangular plate shape. The covering body 6111 covers the side surface of the first beam 10, and one end 6111a in the width direction parallel to the first horizontal direction D2 contacts the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. The width dimension LW1 of the covering body 6111 in the first horizontal direction D2 is set to a predetermined value.

The first notch portion 6112 is a portion cut out from one end 6111a of the covering body 6111 so as to be able to receive the second lower flange portion 11C of the second beam 11. Note that the second lower flange portion 11C of the second beam 11 is an example of a beam-side inserted portion set in advance on the second beam 11. The notch length L1 of the first notch portion 6112 from the one end 6111a of the covering body 6111 is a value smaller than the protrusion length of the second lower flange portion 11C from the second beam body 11A along the first horizontal direction D2. is set to

The second notch portion 6113 is a portion cut out from the other end 6111b opposite to the one end 6111a of the covering main body 6111 so as to be able to receive the brace-side inserted portion 121 set in advance on the load-bearing brace 12.

The connecting portion 6114 is interposed between the first notch portion 6112 and the second notch portion 6113 such that the first notch portion 6112 and the second notch portion 6113 are spaced apart from each other in the first horizontal direction D2. At the same time, the covering main body 6111 and the extending portion 612 are connected. The width dimension W1 of the connecting portion 6114 in the first horizontal direction D2 is set to a value greater than or equal to the reference gap dimension GL1 of the gap between the second lower flange portion 11C of the second beam 11 and the load-bearing brace 12. However, considering that the connecting part 6114 is arranged in the gap between the second beam 11 and the load-bearing brace 12, the width dimension W1 of the connecting part 6114 in the first horizontal direction D2 is equal to or larger than the reference gap dimension GL1. , and set to a value equal to or less than the standard separation distance GL2 along the first horizontal direction D2 from the corner of the second lower flange portion 11C of the second beam 11 facing the first beam 10 to the load-bearing brace 12. is desirable. As described above, the reference gap size GL1 and the reference separation distance GL2 differ depending on the inclination angle of the load-bearing brace 12 with respect to the second beam 11. For this reason, in the present embodiment, the reference gap size is determined for the load-bearing brace 12 having the smallest inclination angle with respect to the second beam 11 among the plurality of load-bearing braces 12 installed between the first beam 10 and the beam 10S. A width dimension W1 of the connecting portion 6114 in the first horizontal direction D2 is set based on GL1 and reference separation distance GL2.

As described above, the thickness of the pre-cut underlayment material 6 is set to a value smaller than the dimension of the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. Moreover, the notch length L1 of the first notch portion 6112 from the one end 6111a of the covering body 6111 is longer than the protrusion length along the first horizontal direction D2 of the second lower flange portion 11C from the second beam body 11A. It is set to a small value. Furthermore, the width dimension W1 of the connecting portion 6114 in the first horizontal direction D2 is set to a value greater than or equal to the reference gap dimension GL1. Therefore, in a state where the covering body 6111 covers the side surface of the first beam 10 and one end 6111a of the covering body 6111 is in contact with the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D, the connecting portion 6114 is arranged in the gap between the second beam 11 and the load-bearing brace 12 while being inserted into the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11 .

The procedure for arranging the connecting portion 6114 in the gap between the second beam 11 and the load-bearing brace 12 in the first underlayment material 61 is as follows. First, the first notch portion 6112 is located at a position where it can receive the second lower flange portion 11C of the second beam 11, and the second notch portion 6113 can receive the brace-side inserted portion 121 of the load-bearing brace 12. Furthermore, the covering body 6111 is in contact with the receiving member 84 in an attitude inclined with respect to the side surface of the first beam 10. At this time, the connecting portion 6114 is located between the second beam 11 and the load-bearing brace 12 on the outside of the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. Then, the covering body 6111 is rotated in the first horizontal direction so that the other end 6111b approaches the first beam 10, and the one end 6111a abuts the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. Move to D2. As a result, even if the width dimension W1 of the connecting portion 6114 is set to a value greater than or equal to the reference gap dimension GL1, the connecting portion 6114 is able to maintain the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. The first underlay member 61 can be attached to the side surface of the first beam 10 such that it is inserted into the gap between the second beam 11 and the load-bearing brace 12 .

The third notch portion 6115 is a portion cut out from one end 6111a of the covering body 6111 so as to be able to receive the second upper flange portion 11B of the second beam 11. The notch length LL1 of the third notch portion 6115 from the one end 6111a of the covering body 6111 is approximately the same value as the protrusion length of the second upper flange portion 11B from the second beam body 11A along the first horizontal direction D2. is set to Note that, similarly to the notch length L1 of the first notch part 6112, the notch length LL1 of the third notch part 6115 is the first horizontal direction of the second upper flange part 11B from the second beam main body 11A. It may be set to a smaller value than the protrusion length along D2. In this case, in a state where the covering main body 6111 covers the side surface of the first beam 10, a region adjacent to the third notch 6115 in the covering main body 6111 is located between the first beam 10 and the first horizontal direction D2. The second beam 11 is inserted into the gap between the second upper flange portion 11B and the second upper flange portion 11B. The procedure for inserting the area portion of the covering main body 6111 corresponding to the third notch 6115 into the gap between the first beam 10 and the second upper flange portion 11B of the second beam 11 is as follows: The procedure is the same as the procedure when inserting the beam into the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11.

The extending portion 612 of the first underlay member 61 is connected to the covering body 6111 via the connecting portion 6114 so as to be located below the first notch 6112 and the second notch 6113. The extending portion 612 is formed into a rectangular plate shape. The extending portion 612 is formed such that one end 612a in the width direction parallel to the first horizontal direction D2 protrudes beyond one end 6111a of the covering main body 6111. The protrusion length WW1 of the one end 612a of the extending portion 612 from the one end 6111a of the covering body 6111 along the first horizontal direction D2 is set to be equal to or larger than the approximately same value as the thickness of the second beam body 11A in the second beam 11. Ru. On the other hand, the other end 612b of the extending portion 612 opposite to the one end 612a is located on the same straight line as the other end 6111b of the covering body 6111.

As shown in FIG. 7, in the first underlay material 61, the covering main body 6111 and the extending portion 612 have a plurality of straight cutting mark lines 51A, 51B, and 51C along the other ends 6111b and 612b, respectively. have. Each of the plurality of cutting mark lines 51A, 51B, and 51C determines the notch length of the second notch portion 6113 in the first horizontal direction D2 according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. This is a line that serves as a mark for cutting the covering main body 6111 and the extending portion 612 in order to adjust the entire length of the insertion portion 121 in the first horizontal direction D2 to the shortest acceptable length.

As mentioned above, the inclination angle of the load-bearing brace 12 with respect to the second beam 11 is determined by the angle of inclination in the right-angled triangle RT that is imaginary between the second beam 11 and the load-bearing brace 12 when looking up from below the installation location of the load-bearing brace 12. , can be estimated by the ratio of the lengths of the base a and the opposite side b (see FIG. 3). That is, it is not necessary to measure the inclination angle of the load-bearing brace 12 with respect to the second beam 11 using a measuring instrument. Each of the plurality of cutting mark lines 51A, 51B, and 51C is attached to the covering main body 6111 and the extension portion 612 based on the ratio of the lengths of the base a and the opposite side b of the virtual right triangle RT. Thereby, each of the plurality of cutting mark lines 51A, 51B, and 51C is attached to the covering main body 6111 and the extension portion 612 according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. Note that depending on the inclination angle of the load-bearing brace 12 with respect to the second beam 11, there may be cases where it is not necessary to attach a cutting mark line to the covering body 6111 and the extension portion 612.

Among the plurality of cutting mark lines 51A, 51B, and 51C, the cutting mark line 51A is placed at the farthest position from each of the other ends 6111b and 612b of the covering body 6111 and the extension portion 612, and the cutting mark line 51C The cutting mark line 51B is placed at a position closest to the other ends 6111b and 612b, and the cutting mark line 51B is placed at a position between the cutting mark line 51A and the cutting mark line 51C. For example, the cutting mark line 51A is placed at a distance LLL1 from one end 6111a of the covering body 6111, and indicates the ratio of the lengths of the base a and the opposite side b of the virtual right triangle RT. This is a line that serves as a mark for cutting the covering body 6111 and the extending portion 612 when “b” is “0.5:1”. The cutting mark line 51B is a line between the covering body 6111 and the extending portion 612 when “a:b” indicating the length ratio of the base side a and the opposite side b of the virtual right triangle RT is “1:1”. This is a line that serves as a mark for cutting. The cutting mark line 51C indicates the covering body 6111 and the extension when "a:b" indicating the length ratio of the base a and the opposite side b of the virtual right triangle RT is "1.5:1". 612 is a line that serves as a mark for cutting.

By cutting the covering main body 6111 and the extending portion 612 along the respective cutting mark lines 51A, 51B, and 51C, the second notch portion 6113 is cut as the inclination angle of the load-bearing brace 12 with respect to the second beam 11 becomes smaller. The notch length can be adjusted so that the notch length becomes shorter.

The second underlay material 62 includes a plate-shaped covering part 621 for covering the side surface of the first beam 10 and a plate-shaped extending part 622 extending downward from the covering part 621.

Like the first underlay material 61, the covering section 621 of the second underlay material 62 includes a covering main body 6211, a first notch section 6212, a second notch section 6213, a connecting section 6214, and a third notch. 6215.

The covering body 6211 is formed into a rectangular plate shape. The covering body 6211 covers the side surface of the first beam 10, and one end 6211a in the width direction parallel to the first horizontal direction D2 contacts the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. The width dimension LW2 of the covering body 6211 in the first horizontal direction D2 is set to approximately the same value as the width dimension LW1 of the covering body 6111 of the first underlay material 61 in the first horizontal direction D2.

The first notch portion 6212 is a portion cut out from one end 6211a of the covering body 6211 so as to be able to receive the second lower flange portion 11C of the second beam 11. The notch length L2 of the first notch portion 6212 from the one end 6211a of the covering body 6211 is a value smaller than the protrusion length of the second lower flange portion 11C from the second beam body 11A along the first horizontal direction D2. is set to At this time, the notch length L2 of the first notch portion 6212 is set to the same value as the notch length L1 of the first notch portion 6112 of the first underlay material 61.

The second notch portion 6213 is a portion cut out from the other end 6211b of the covering body 6211 opposite to the one end 6211a so as to be able to receive the brace-side inserted portion 121 set in advance on the load-bearing brace 12.

The connecting portion 6214 is interposed between the first notch portion 6212 and the second notch portion 6213 such that the first notch portion 6212 and the second notch portion 6213 are spaced apart from each other in the first horizontal direction D2. At the same time, the covering main body 6211 and the extending portion 622 are connected. Similarly to the connecting portion 6114 of the first underlayment 61, the width W2 of the connecting portion 6214 in the first horizontal direction D2 is based on the standard of the gap between the second lower flange portion 11C of the second beam 11 and the load-bearing brace 12. It is set to a value greater than or equal to the gap dimension GL1. At this time, the width W2 of the connecting portion 6214 in the first horizontal direction D2 is set to the same value as the width W1 of the connecting portion 6114 of the first underlayment 61.

In a state where the covering main body 6211 covers the side surface of the first beam 10 and one end 6211a of the covering main body 6211 is in contact with the side surface of the second beam main body 11A of the second beam 11 or the connecting member 11D, the connecting portion 6214 It is placed in the gap between the second beam 11 and the load-bearing brace 12 while being inserted into the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11 . Note that the procedure for arranging the connecting portion 6214 in the gap between the second beam 11 and the load-bearing brace 12 in the second underlayment 62 is the same as that for the first underlayment 61 described above, so the explanation will be given below. omitted.

The third notch portion 6215 is a portion cut out from one end 6211a of the covering body 6211 so as to be able to receive the second upper flange portion 11B of the second beam 11. The notch length LL2 of the third notch portion 6215 from the one end 6211a of the covering body 6211 is approximately the same value as the protrusion length of the second upper flange portion 11B from the second beam body 11A along the first horizontal direction D2. is set to At this time, the notch length LL2 of the third notch portion 6215 is set to the same value as the notch length LL1 of the third notch portion 6115 of the first underlay material 61. Note that, similarly to the notch length L2 of the first notch part 6212, the notch length LL2 of the third notch part 6215 is the first horizontal direction of the second upper flange part 11B from the second beam main body 11A. It may be set to a smaller value than the protrusion length along D2. In this case, in a state where the covering main body 6211 covers the side surface of the first beam 10, a region adjacent to the third notch 6215 in the covering main body 6211 is located between the first beam 10 and the first horizontal direction D2. The second beam 11 is inserted into the gap between the second upper flange portion 11B and the second upper flange portion 11B. The procedure for inserting the area portion of the covering body 6211 corresponding to the third notch 6215 into the gap between the first beam 10 and the second upper flange portion 11B of the second beam 11 is as follows: The procedure is the same as the procedure when inserting the beam into the gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11.

The extending portion 622 of the second underlay member 62 is connected to the covering body 6211 via the connecting portion 6214 so as to be located below the first notch 6212 and the second notch 6213. The extending portion 622 is formed into a rectangular plate shape. The extending portion 622 has one end 622a in the width direction parallel to the first horizontal direction D2 located on the same straight line as the one end 6211a of the covering main body 6211, or one end 622a is retracted from the one end 6211a of the covering main body 6211. It is formed like this. Specifically, when the protruding length WW1 of the extending portion 612 of the first underlay member 61 is set to approximately the same value as the thickness of the second beam main body 11A in the second beam 11, the second underlay member 62 One end 622a of the extending portion 622 is located on the same straight line as one end 6211a of the covering main body 6211. When the protruding length WW1 of the extending portion 612 of the first underlay member 61 is set to a value larger than the thickness of the second beam main body 11A in the second beam 11, the extending portion 622 of the second underlay member 62 One end 622a is retracted from one end 6211a of the covering body 6211. On the other hand, the other end 622b of the extending portion 622 opposite to the one end 622a is located on the same straight line as the other end 6211b of the covering body 6211.

As shown in FIG. 7, in the second underlay material 62, the covering main body 6211 and the extending portion 622 have a plurality of straight cutting mark lines 51A, 51B, and 51C along the other ends 6211b and 622b, respectively. have. Each of the plurality of cutting mark lines 51A, 51B, and 51C determines the notch length of the second notch portion 6213 in the first horizontal direction D2 according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. This is a line that serves as a mark for cutting the covering main body 6211 and the extending portion 622 in order to adjust the entire length of the insertion portion 121 in the first horizontal direction D2 to the shortest acceptable length. As in the case of the first underlay material 61, each of the plurality of cutting mark lines 51A, 51B, and 51C in the second underlay material 62 is located in the imaginary right triangle RT when looking up from below the installation location of the load-bearing brace 12. The covering body 6211 and the extending portion 622 are attached based on the ratio of the lengths of the bottom side a and the opposite side b. For example, the cutting mark line 51A on the second underlay material 62 is placed at a position separated from one end 6211a of the covering body 6211 by a distance LLL2. At this time, the separation distance LLL2 between the cutting mark lines 51A on the second underlay material 62 is set to approximately the same value as the separation distance LLL1 between the cutting mark lines 51A on the first underlay material 61. By cutting the covering main body 6211 and the extending portion 622 along the respective cutting mark lines 51A, 51B, and 51C, the second notch portion 6213 is cut as the inclination angle of the load-bearing brace 12 with respect to the second beam 11 becomes smaller. The notch length can be adjusted so that the notch length becomes shorter.

In the pre-cut underlayment 6 consisting of the first underlayment 61 and the second underlayment 62 having the above configuration, each connecting portion 6114, 6214 has a gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. The covering bodies 6111 and 6211 are inserted into the gap between the second beam 11 and the load-bearing brace 12, and are arranged so as to cover the side surfaces of the first beam 10. Moreover, in the first underlay material 61 and the second underlay material 62, each of the first notches 6112 and 6212 receives the second lower flange portion 11C to avoid interference with the second beam 11, and the load-bearing brace 12 Each of the second notches 6113 and 6213 receives the brace side inserted portion 121 so as to avoid interference with the brace side inserted portion 121. Further, in the first underlay material 61 and the second underlay material 62, each third notch portion 6115, 6215 receives the second upper flange portion 11B so as to avoid interference with the second beam 11.

At this time, in the pre-cut underlayment material 6, each end 6111a, 6211a of each covering body 6111, 6211 of the first underlayment material 61 and the second underlayment material 62 is the side surface of the second beam main body 11A in the second beam 11 or the connecting member 11D, and one end 612a of the extending portion 612 of the first underlay 61 and one end 622a of the extending portion 622 of the second underlay 62 are butted against each other. One end 612a of the extension part 612 of the first underlayment 61 and one end 622a of the extension part 622 of the second underlayment 62 are located between the first underlayment 61 and the second underlayment 62 with the second beam 11 in between. When attached to the side surface of the first beam 10, the end surfaces become buttable to each other. In addition, in the first underlay material 61 and the second underlay material 62, each other end 6111b, 6211b of each covering body 6111, 6211 and each other end 612b, 622b of each extension portion 612, 622 are normally parting walls. It is butted against the underlay material 41 of the material 4. When each covering body 6111, 6211 and each extending portion 612, 622 are cut along the cutting mark lines 51A, 51B, 51C, the cut end faces are usually butted against the underlaying material 41 of the parting wall material 4. It will be done. Further, the lower end of each of the extending portions 612, 622 is butted against the upper end of the underlay material 2B11 of the residential boundary wall material 2B1.

In addition, in the pre-cut underlayment material 6, the upper end portions of each covering body 6111, 6211 of the first underlayment material 61 and the second underlayment material 62 are screwed to the receiving member 84, and the other covering bodies 6111, 6211 are screwed to the receiving member 84. , and each of the extending portions 612 and 622 are screwed to the parting wall stud 83.

In the first underlayment material 61 and the second underlayment material 62, each first notch part 6112, 6212 for receiving the second lower flange part 11C of the second beam 11, and the brace side inserted part of the load-bearing brace 12 are provided. Each second notch 6113, 6213 for receiving 121 is formed in advance. Furthermore, third notches 6115 and 6215 for receiving the second upper flange portion 11B of the second beam 11 are formed in advance in the first underlay material 61 and the second underlay material 62. Therefore, in order to set the length of the notch, the constructor needs to perform work to measure the dimensions of the gap between the second beam 11 and the load-bearing brace 12 and work to form the notch at the construction site. There is no. Therefore, the construction efficiency of the parting wall structure 1 can be improved.

In addition, in the first underlayment material 61 and the second underlayment material 62, each covering body 6111, 6211 covers the side surface of the first beam 10, and the gap between the second beam 11 and the load-bearing brace 12 is covered with each covering body 6111, 6211. Since the connecting portions 6114 and 6214 are arranged, the area of the gap portion where the fire-resistant pre-cut underlayment material 6 is not present is prevented from increasing as much as possible in accordance with the formation of the notch in the parting wall structure 1. be able to. Therefore, it is possible to suppress a decrease in the fire resistance of the parting wall structure 1, and it is also possible to improve the efficiency of filling the gap with the sealant. Furthermore, the amount of sealant used to fill the gap can be reduced.

In addition, in the first underlayment material 61 and the second underlayment material 62, the width dimensions W1 and W2 in the first horizontal direction D2 of each connecting portion 6114 and 6214 are different from the second lower flange portion 11C of the second beam 11 and the load-bearing brace. 12 is set to a value greater than or equal to the reference gap dimension GL1. Therefore, in a state where the side surfaces of the first beam 10 are covered by the covering bodies 6111 and 6211, each connecting portion 6114 and 6214 has a gap GP between the first beam 10 and the second lower flange portion 11C of the second beam 11. The second beam 11 is inserted into the gap between the second beam 11 and the load-bearing brace 12. Thereby, in the gap GP between the first beam 10 and the second beam 11, the area of the gap portion where the precut underlayment material 6 does not exist can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure 1, and it is also possible to further improve the efficiency of filling the gap with the sealant.

In addition, in the first underlayment material 61 and the second underlayment material 62, the notch lengths LL1 and LL2 of the respective third notch portions 6115 and 6215 are set to the first horizontal direction of the second upper flange portion 11B from the second beam main body 11A. Assume that the protrusion length is set to a smaller value than the protrusion length along the direction D2. In this case, as described above, the area adjacent to each third notch 6115, 6215 in each coating main body 6111, 6211 in the first horizontal direction D2 is It is in a state where it is inserted into the gap with the upper flange portion 11B. Thereby, the area of the gap between the first beam 10 and the second beam 11 where the precut underlayment material 6 does not exist can be made smaller. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure 1, and it is also possible to further improve the efficiency of filling the gap with the sealant.

In addition, since the width dimensions W1 and W2 of each of the connecting portions 6114 and 6214 are set to values greater than or equal to the standard gap dimension GL1, compared to, for example, a case where the connecting portions have a width dimension less than the standard gap dimension GL1, The strength of each connecting portion 6114, 6214 can be increased. As a result, damage such as cracks to the connecting parts 6114 and 6214 due to the impact when screwing the first underlay material 61 and the second underlay material 62 to the parting wall stud 83 is suppressed as much as possible. can do.

Further, in the first underlay material 61 and the second underlay material 62, each covering body 6111, 6211 and each extension portion 612, 622 have a plurality of cutting mark lines 51A, 51B, 51C. Therefore, by cutting each covering body 6111, 6211 and each extending portion 612, 622 along the cutting mark lines 51A, 51B, 51C, each section is cut according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. The lengths of the two notches 6113 and 6213 can be adjusted to the shortest length that can accommodate the entire brace-side inserted portion 121 in the first horizontal direction D2. Thereby, in accordance with the formation of the respective second notches 6113 and 6213 in the parting wall structure 1, the area of the gap portion where the pre-cut underlayment material 6 does not exist can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure 1, and it is also possible to further improve the efficiency of filling the gap with the sealant.

<Structure of pre-cut lining material>
The precut upholstery 7 is an overlay that is stacked on the precut underlayment 6 from the opposite side of the first beam 10. As shown in FIGS. 6 and 8, the precut top covering material 7 is the first top covering material 7 attached to the side surface of the first beam 10 so as to be arranged in line in the first horizontal direction D2 with the second beam 11 in between. It includes an upholstery 71 and a second upholstery 72. The first upholstery 71 is placed on one side of the second beam 11 in the first horizontal direction D2 and is arranged to overlap the first underlining material 61, and the second upholstery 72 is placed on the other side of the second beam 11 in the first horizontal direction D2. The second underlay material 62 is placed on top of the second underlay material 62 on the side.

The first upholstery 71 includes a plate-shaped overlay covering portion 711 for covering the covering portion 611 of the first underlayment material 61 and extends downward from the overlay covering portion 711. It includes a plate-like upper extension part 712 that covers the extension part 612.

The top covering portion 711 includes a top covering main body 7111, a first top notch 7112, a second top notch 7113, a top connecting portion 7114, and a third top notch 7115. have.

The top covering main body 7111 is formed into a rectangular plate shape. The upper coating body 7111 covers the coating body 6111 of the first underlay material 61, and one end 7111a in the width direction parallel to the first horizontal direction D2 is the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. comes into contact with.

The first top notch 7112 is a portion cut out from one end 7111a of the top coating main body 7111 so as to be able to receive the second lower flange portion 11C of the second beam 11. The notch length L3 of the first overlay notch 7112 from the one end 7111a of the overlay covering main body 7111 is the protrusion length of the second lower flange 11C from the second beam main body 11A along the first horizontal direction D2. is set to approximately the same value as At this time, the notch length L3 of the first upholstery notch portion 7112 is set to a value larger than the notch length L1 of the first notch portion 6112 of the first underlayment material 61.

The second upholstery notch 7113 is a portion cut out so that the brace-side inserted portion 121 of the load-bearing brace 12 can be received from the other end 7111b of the covering body 7111 opposite to the one end 7111a.

The top connecting portion 7114 connects the first top notch 7112 and the second top notch 7113 such that the first top notch 7112 and the second top notch 7113 are spaced apart from each other in the first horizontal direction D2. It is interposed between the notch portion 7113 and connects the top covering main body 7111 and the top covering extension portion 712. The width dimension W3 of the upper connecting portion 7114 in the first horizontal direction D2 is set to a value greater than or equal to the reference gap dimension GL1 of the gap between the second lower flange portion 11C of the second beam 11 and the load-bearing brace 12. . However, considering that the top connecting portion 7114 is arranged in the gap between the second beam 11 and the load-bearing brace 12, the width W3 of the top connecting portion 7114 in the first horizontal direction D2 is equal to the standard gap dimension. GL1 or more, and a value that is less than or equal to the reference separation distance GL2 along the first horizontal direction D2 from the corner of the second lower flange portion 11C of the second beam 11 facing the first beam 10 to the load-bearing brace 12. It is desirable that this is set. In this embodiment, the width dimension W3 of the top connecting portion 7114 in the first horizontal direction D2 is set to approximately the same value as the reference separation distance GL2.

In a state where the top coating body 7111 covers the coating body 6111 of the first underlay material 61, and one end 7111a of the top coating body 7111 is in contact with the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. The top connecting portion 7114 is disposed in the gap between the second beam 11 and the load-bearing brace 12 in a state where it is overlapped with the connecting portion 6114 of the first underlay member 61 .

The third top notch portion 7115 is a portion cut out from one end 7111a of the top covering main body 7111 so as to be able to receive the second upper flange portion 11B of the second beam 11. The notch length LL3 of the third overlay notch 7115 from the one end 7111a of the overlay coating main body 7111 is the protrusion length along the first horizontal direction D2 of the second upper flange portion 11B from the second beam main body 11A. is set to approximately the same value as At this time, the notch length LL3 of the third upholstery notch 7115 is set to the same value as the notch length LL1 of the third notch 6115 of the first underlining material 61.

The top covering extension part 712 of the first top covering material 71 is connected to the top covering part through the top covering connecting part 7114 so as to be located below the first top covering notch part 7112 and the second top covering notch part 7113. It is connected to the covering body 7111. The top extension portion 712 is formed into a rectangular plate shape. One end 712a of the top covering extension part 712 in the width direction parallel to the first horizontal direction D2 is located on the same straight line as one end 7111a of the top covering main body 7111, or one end 712a is located on the same straight line as the one end 7111a of the top covering main body 7111. It is formed so as to be retracted from one end 7111a. Specifically, when the width dimension W3 of the top lining connecting portion 7114 is set to the same value as the width dimension W1 of the connecting portion 6114 of the first underlay material 61, one end 712a of the top lining extending portion 712 is It is located on the same straight line as one end 7111a of the top coating main body 7111. When the width dimension W3 of the top covering connecting portion 7114 is set to a larger value than the width dimension W1 of the connecting portion 6114 of the first underlay material 61, one end 712a of the top covering extension portion 712 is connected to the top covering main body. It is retracted from one end 7111a of 7111. On the other hand, the other end 712b of the top covering extension 712 opposite to the one end 712a is located on the same straight line as the other end 7111b of the top covering main body 7111.

Here, the width LW3 of the top covering body 7111 of the first upholstery material 71 in the first horizontal direction D2 is a value larger than the width dimension LW1 of the covering body 6111 of the first underlay material 61 in the first horizontal direction D2. is set to Therefore, in a state where the first top covering material 71 is stacked on the first underlining material 61, one end 7111a of the top covering main body 7111 comes into contact with the side surface of the second beam main body 11A of the second beam 11 or the connecting member 11D. In this state, the respective other ends 7111b and 712b of the top covering main body 7111 and the top covering extension portion 712 are in the second It will be located at a position away from the beam 11.

As shown in FIG. 8, in the first top covering material 71, the top covering main body 7111 and the top covering extension portion 712 have a plurality of linear top covering cutting marks along the respective other ends 7111b and 712b. It has lines 51A, 51B, and 51C. Each of the plurality of lining cutting mark lines 51A, 51B, and 51C determines the length of the second lining notch 7113 in the first horizontal direction D2 according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. , is a line that serves as a mark for cutting the top covering main body 7111 and the top covering extension portion 712 in order to adjust the entire length of the brace side inserted portion 121 in the first horizontal direction D2 to the shortest acceptable length. . By cutting the top covering main body 7111 and the top covering extension portion 712 along the respective top lining cutting mark lines 51A, 51B, and 51C, as the inclination angle of the load-bearing brace 12 with respect to the second beam 11 becomes smaller, the second The length of the notch of the top covering notch 7113 can be adjusted so that it becomes shorter.

As in the case of the first underlay material 61, each of the plurality of overlay cutting mark lines 51A, 51B, and 51C in the first overlay material 71 is a virtual right angle when looking up from below the installation location of the load-bearing brace 12. The overlay covering body 7111 and the overlay extension portion 712 are attached based on the ratio of the lengths of the base a and the opposite side b of the triangle RT. For example, the top covering cutting mark line 51A in the first top covering material 71 is placed at a position separated by a distance LLL3 from one end 7111a of the top covering main body 7111. At this time, the distance LLL3 between the top cutting mark lines 51A on the first top covering material 71 is set according to the inclination of the load-bearing brace 12 with respect to the second beam 11. is set to a value greater than . In other words, the separation distance from the one end 7111a of the top coating main body 7111 of each top covering cutting mark line 51A, 51B, 51C in the first top covering material 71 is is set to a value larger than the distance from one end 6111a of the covering body 6111. Therefore, in the state where the first top material 71 is stacked on the first under material 61, the top covering main body 7111 and the top covering extension portion 712 of the first top material 71 are cut at the top cutting mark lines 51A, 51B. , 51C is further away from the second beam 11 than the end surfaces of the first underlayment material 61 after cutting along the cutting mark lines 51A, 51B, 51C of the covering body 6111 and the extension portion 612. It will be located in the position.

The second upholstery 72 includes a plate-shaped upper covering portion 721 for covering the covering portion 621 of the second underlining material 62 and extends downward from the upper covering portion 721. It includes a plate-like upper extension part 722 that covers the extension part 622.

Like the first top material 71, the top covering portion 721 of the second top material 72 includes a top covering main body 7211, a first top notch portion 7212, and a second top notch portion 7213. , a top cover connecting portion 7214 and a third top cover notch portion 7215.

The top covering body 7211 is formed into a rectangular plate shape. The upper coating body 7211 covers the coating body 6211 of the second underlay material 62, and one end 7211a in the width direction parallel to the first horizontal direction D2 is the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. comes into contact with.

The first top notch 7212 is a portion cut out from one end 7211a of the top coating main body 7211 so as to be able to receive the second lower flange portion 11C of the second beam 11. The notch length L4 of the first overlay cutout portion 7212 from the one end 7211a of the overlay covering main body 7211 is the protrusion length of the second lower flange portion 11C from the second beam main body 11A along the first horizontal direction D2. is set to approximately the same value as At this time, the notch length L4 of the first top covering notch 7212 is set to the same value as the notch length L3 of the first top covering notch 7112 of the first top covering material 71.

The second top notch 7213 is a portion cut out from the other end 7211b opposite to the one end 7211a of the top covering main body 7211 so as to be able to receive the brace-side inserted portion 121 of the load-bearing brace 12.

The top connecting portion 7214 connects the first top notch 7212 and the second top notch 7213 such that the first top notch 7212 and the second top notch 7213 are spaced apart from each other in the first horizontal direction D2. It is interposed between the notch portion 7213 and connects the top covering main body 7211 and the top covering extension portion 722. Similarly to the upper connecting portion 7114 of the first upper material 71, the width W4 of the upper connecting portion 7214 in the first horizontal direction D2 is the width dimension W4 between the second lower flange portion 11C of the second beam 11 and the load-bearing brace 12. The value is set to be greater than or equal to the reference gap dimension GL1 between the gaps. At this time, the width W4 of the upper connecting portion 7214 in the first horizontal direction D2 is the first horizontal dimension from the corner of the second lower flange portion 11C of the second beam 11 facing the first beam 10 to the load-bearing brace 12. This value is approximately the same as the reference separation distance GL2 along the direction D2, and is set to the same value as the width dimension W3 of the top covering connecting portion 7114 of the first covering material 71.

In a state where the top coating body 7211 covers the coating body 6211 of the second underlay material 62, and one end 7211a of the top coating body 7211 is in contact with the side surface of the second beam body 11A of the second beam 11 or the connecting member 11D. The top connecting portion 7214 is disposed in the gap between the second beam 11 and the load-bearing brace 12 in a state where it is overlapped with the connecting portion 6214 of the second underlay member 62 .

The third top notch 7215 is a portion cut out from one end 7211a of the top coating main body 7211 so as to be able to receive the second upper flange portion 11B of the second beam 11. The notch length LL4 of the third top notch 7215 from the one end 7211a of the top coating main body 7211 is the protrusion length of the second upper flange portion 11B from the second beam main body 11A along the first horizontal direction D2. is set to approximately the same value as At this time, the notch length LL4 of the third top covering notch 7215 is set to the same value as the notch length LL3 of the third top covering notch 7115 of the first covering material 71.

The top covering extension part 722 of the second top covering material 72 is connected to the top covering part through the top covering connecting part 7214 so as to be located below the first top covering notch part 7212 and the second top covering notch part 7213. It is connected to the covering body 7211. The top extension portion 722 is formed into a rectangular plate shape. The top covering extension portion 722 is formed such that one end 722a in the width direction parallel to the first horizontal direction D2 protrudes beyond one end 7211a of the top covering main body 7211. The protrusion length WW2 of the one end 722a of the top covering extension part 722 from the one end 7211a of the top coating main body 7211 along the first horizontal direction D2 is approximately the same value as the thickness of the second beam main body 11A in the second beam 11. It is set as above. On the other hand, the other end 722b of the top covering extension part 722 opposite to the one end 722a is located on the same straight line as the other end 7211b of the top covering main body 7211.

Here, the width LW4 of the top coating main body 7211 of the second top covering material 72 in the first horizontal direction D2 is a value larger than the width dimension LW2 of the covering main body 6211 of the second underlay material 62 in the first horizontal direction D2. is set to Therefore, in a state where the second top covering material 72 is stacked on the second underlay material 62, one end 7211a of the top coating main body 7211 comes into contact with the side surface of the second beam main body 11A of the second beam 11 or the connecting member 11D. In this state, the other ends 7211b and 722b of the top covering main body 7211 and the top covering extension 722 are closer to each other than the other ends 6211b and 622b of the covering main body 6211 and the extending portion 622 in the second underlay material 62. It will be located at a position away from the beam 11.

As shown in FIG. 8, in the second top covering material 72, the top covering main body 7211 and the top covering extension portion 722 have a plurality of linear top covering cutting marks along the respective other ends 7211b and 722b. It has lines 51A, 51B, and 51C. Each of the plurality of lining cutting mark lines 51A, 51B, and 51C determines the length of the second lining notch 7213 in the first horizontal direction D2 according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11. , is a line that serves as a mark for cutting the top covering main body 7211 and the top covering extension portion 722 in order to adjust the entire length of the brace side inserted portion 121 in the first horizontal direction D2 to the shortest acceptable length. . By cutting the top covering main body 7211 and the top covering extension portion 722 along the respective top covering cutting mark lines 51A, 51B, and 51C, as the inclination angle of the load-bearing brace 12 with respect to the second beam 11 becomes smaller, the second The length of the notch of the overlay notch 7213 can be adjusted so that the length of the notch becomes shorter.

As in the case of the second underlay material 62, each of the plurality of overlay cutting mark lines 51A, 51B, and 51C in the second overlay material 72 is at a virtual right angle when looking up from below the installation location of the load-bearing brace 12. The overlay covering body 7211 and the overlay extension portion 722 are attached based on the ratio of the lengths of the base a and the opposite side b of the triangle RT. For example, the top covering cutting mark line 51A on the second top covering material 72 is placed at a position separated by a distance LLL4 from one end 7211a of the top covering main body 7211. At this time, the distance LLL4 between the top cutting mark lines 51A on the second top covering material 72 is set to approximately the same value as the distance LLL3 between the top cutting marking lines 51A on the first top covering material 71, and the load-bearing brace 12 is set to a value larger than the separation distance LLL2 of the cutting mark line 51A in the second underlay material 62, depending on the inclination of the cut mark line 51A with respect to the second beam 11. In other words, the distance from the one end 7211a of the top coating main body 7211 of each top cutting mark line 51A, 51B, 51C in the second top covering material 72 is the distance between each cutting mark line 51A, 51B, 51C in the second underlay material 62. is set to a value larger than the distance from one end 6211a of the covering body 6211. Therefore, in the state where the second top material 72 is stacked on the second underlay material 62, the top covering main body 7211 and the top covering extension portion 722 of the second top material 72 are cut at the top cutting mark lines 51A, 51B. , 51C is further away from the second beam 11 than the end surfaces of the second underlay material 62 after cutting along the cutting mark lines 51A, 51B, and 51C of the covering body 6211 and the extension portion 622. It will be located in the position.

In the pre-cut top covering material 7 consisting of the first covering material 71 and the second covering material 72 having the above configuration, each of the covering connecting portions 7114 and 7214 is arranged in the gap between the second beam 11 and the load-bearing brace 12. In this state, the upper covering bodies 7111 and 7211 are arranged so as to cover the side surfaces of the first beam 10. Moreover, in the first upholstery material 71 and the second upholstery material 72, each of the first upholstery notches 7112 and 7212 receives the second lower flange portion 11C to avoid interference with the second beam 11. , each of the second overlay notches 7113 and 7213 receives the brace-side inserted portion 121 so as to avoid interference with the load-bearing brace 12. Furthermore, in the first upholstery material 71 and the second upholstery material 72, each of the third upholstery notches 7115 and 7215 receives the second upper flange portion 11B so as to avoid interference with the second beam 11.

At this time, in the pre-cut top covering material 7, each one end 7111a, 7211a of each top covering body 7111, 7211 of the first covering material 71 and second covering material 72 is connected to the second beam main body 11A of the second beam 11. or the connecting member 11D, and one end 712a of the top extending portion 712 of the first top covering 71 and one end 722a of the top extending portion 722 of the second top covering 72 are butted against each other. One end 712a of the top covering extension 712 of the first top covering 71 and one end 722a of the top covering extension 722 of the second top covering 72 are connected to the first top covering 71 and the second top covering 72. In a state where the first underlay material 61 and the second underlay material 62 are respectively overlapped, the end surfaces become buttable to each other. Here, the abutting positions of the respective top lining extensions 712 and 722 in the pre-cut top lining material 7 are different from the butting positions of the respective lining extensions 612 and 622 in the pre-cut underlay material 6 in the first horizontal direction D2. ing. Therefore, a state in which communication between the abutting portion between the first underlining material 61 and the second underlining material 62 and the abutting portion between the first upholstery material 71 and the second upholstery material 72 is avoided. can do. Thereby, it is possible to suppress the fire resistance of the parting wall structure 1 from decreasing due to the abutting portion.

In addition, in the first top covering material 71 and the second top covering material 72, the respective other ends 7111b, 7211b of the respective top covering main bodies 7111, 7211, and the respective other ends 712b, 722b of the respective top covering extensions 712, 722. is usually butted against the lining material 42 of the parting wall material 4.

As described above, in the state where the first top covering material 71 is stacked on the first underlining material 61, the other ends 7111b and 712b of the top covering main body 7111 and the top covering extension portion 712 are connected to the first underlining material 61. It is located at a position further away from the second beam 11 than the other ends 6111b, 612b of the covering body 6111 and the extending portion 612 in . Further, in a state where the second top covering material 72 is stacked on the second underlay material 62, the other ends 7211b and 722b of the top covering main body 7211 and the top covering extension portion 722 are connected to the covering main body of the second underlay material 62. It is located at a position farther from the second beam 11 than the other ends 6211b and 622b of the extension portion 6211 and the extension portion 622, respectively. In such a case, the butt position of the first lining material 71 and the second lining material 72 and the lining material 42 of the normal parting wall material 4 is the same as the first lining material 61 and the second lining material 62 and the normal parting wall material 4. The butting position of the parting wall material 4 with the underlay material 41 is different in the first horizontal direction D2. For this reason, the butt portion between the first underlay material 61 and the second underlay material 62 and the underlay material 41 of the normal parting wall material 4, the first overlay material 71 and the second overlay material 72 and the normal parting wall material 4 can be kept in a state in which communication with the abutting portion between the top covering material 42 and the top covering material 42 is avoided. Thereby, it is possible to suppress the fire resistance of the parting wall structure 1 from decreasing due to the abutting portion.

In addition, in the first top material 71 and the second top material 72, each top covering main body 7111, 7211 and each top covering extension portion 712, 722 are cut along the top covering cutting mark lines 51A, 51B, 51C. In this case, the cut end face is usually butted against the covering material 42 of the parting wall material 4. Further, the lower end of each of the top covering extensions 712 and 722 is butted against the upper end of the top covering material 2B12 of the residential boundary wall material 2B1.

As described above, in the state where the first top material 71 is stacked on the first under material 61, the top covering main body 7111 and the top covering extension portion 712 of the first top material 71 are cut by the top covering cutting mark line 51A. , 51B, 51C are further away from the second beam 11 than the end surfaces of the first underlayment 61 after cutting along the cutting mark lines 51A, 51B, 51C of the covering body 6111 and the extension portion 612. located in a remote location. Furthermore, in the state where the second top material 72 is stacked on the second underlay material 62, the top covering main body 7211 and the top covering extension portion 722 of the second top material 72 are cut at the top cutting mark lines 51A, 51B, The end face after cutting along line 51C is located further away from the second beam 11 than the end face after cutting along cutting mark lines 51A, 51B, and 51C of the covering main body 6211 and extension portion 622 in the second underlay material 62. Located in In such a case, the end faces of the first cladding material 71 and the second cladding material 72 after cutting along the cladding cutting mark lines 51A, 51B, 51C and the cladding material 42 of the normal parting wall material 4 are The abutment position of the end faces of the first underlayment material 61 and the second underlayment material 62 after cutting along the cutting mark lines 51A, 51B, 51C and the underlayment material 41 of the normal parting wall material 4 is the abutment position of the underlayment material 41 of the normal parting wall material 4. 1 in the horizontal direction D2 (see FIG. 4). For this reason, the butt portion between the first underlay material 61 and the second underlay material 62 and the underlay material 41 of the normal parting wall material 4, the first overlay material 71 and the second overlay material 72 and the normal parting wall material 4 can be kept in a state in which communication with the abutting portion between the top covering material 42 and the top covering material 42 is avoided. Thereby, it is possible to suppress the fire resistance of the parting wall structure 1 from decreasing due to the abutting portion.

In the pre-cut top covering material 7, the upper end portions of the top covering bodies 7111 and 7211 of the first covering material 71 and the second covering material 72 are screwed to the receiving member 84, and each other The area portions of the top covering bodies 7111, 7211 and the respective top covering extensions 712, 722 are screwed to the parting wall stud 83.

In the first upholstery material 71 and the second upholstery material 72, each of the first upholstery notches 7112 and 7212 for receiving the second lower flange portion 11C of the second beam 11 and the brace of the load-bearing brace 12 are provided. Second upper notches 7113 and 7213 for receiving the side inserted portions 121 are formed in advance. Furthermore, in the first upholstery material 71 and the second upholstery material 72, third upholstery notches 7115 and 7215 for receiving the second upper flange portion 11B of the second beam 11 are formed in advance. There is. Therefore, in order to set the length of the notch, the constructor needs to perform work to measure the dimensions of the gap between the second beam 11 and the load-bearing brace 12 and work to form the notch at the construction site. There is no. Therefore, the construction efficiency of the parting wall structure 1 can be improved.

Moreover, as shown in FIG. 4, when the first upholstery 71 is stacked on the first underlining material 61, the second upholstery notch 7113 of the upholstery connecting portion 7114 of the first upholstery 71 The side end face is located at a position farther from the second beam 11 than the end face of the connecting portion 6114 of the first underlayment 61 on the second notch portion 6113 side, depending on the inclination of the load-bearing brace 12 with respect to the second beam 11. are doing. Similarly, when the second top material 72 is stacked on the second bottom material 62, the end surface of the top connection portion 7214 of the second top material 72 on the second top cutout portion 7213 side is a load-bearing brace. 12 relative to the second beam 11, the connecting portion 6214 of the second underlay member 62 is located at a position farther away from the second beam 11 than the end surface of the connecting portion 6214 on the second notch portion 6213 side. Thereby, the area of the gap between the second beam 11 and the load-bearing brace 12 on the first underlay material 61 where the first overlay material 71 is not present can be made as small as possible. Similarly, the area of the gap between the second beam 11 and the load-bearing brace 12 on the second underlay material 62 where the second overlay material 72 is not present can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure 1, and it is also possible to improve the efficiency of filling the gap portion.

In addition, in the first top covering material 71 and the second top covering material 72, each top covering main body 7111, 7211 and each top covering extension portion 712, 722 have a plurality of top covering cutting mark lines 51A, 51B, 51C. have. For this reason, by cutting each top covering main body 7111, 7211 and each top covering extension part 712, 722 along the top covering cutting mark lines 51A, 51B, 51C, the slope of the load-bearing brace 12 with respect to the second beam 11 is reduced. Depending on the angle, the length of each of the second overlay notches 7113, 7213 can be adjusted to the shortest length that can accommodate the entire brace-side inserted portion 121 in the first horizontal direction D2. Thereby, in accordance with the formation of the respective second lining notches 7113 and 7213 in the parting wall structure 1, the area of the gap portion where the precut lining material 7 does not exist can be made as small as possible. Therefore, it is possible to more effectively suppress the deterioration of the fire resistance of the parting wall structure 1, and it is also possible to further improve the efficiency of filling the gap with the sealant.

Although the precut boundary wall material 5 according to the embodiment of the present invention has been described above, the present invention is not limited to this, and for example, the following modified embodiments can be adopted.

In the above embodiment, the pre-cut field is attached to the first beam 10 to which the second beam 11 is connected via the connection member 11D so that the gap GP is formed between the first beam 10 and the second beam 11. Although the wall material 5 has been described, the present invention is not limited thereto. The precut boundary wall material 5 can also be applied to the first beam 10 to which the second beam 11 is abutted without using the connecting member 11D.

In this case, the pre-cut underlayment material 6 consisting of the first underlayment material 61 and the second underlayment material 62 constituting the pre-cut parting wall material 5 has each connecting portion 6114, 6214 between the second beam 11 and the load-bearing brace 12. The covering bodies 6111 and 6211 are disposed in the gap so as to cover the side surfaces of the first beam 10. Moreover, in the first underlay material 61 and the second underlay material 62, each of the first notches 6112 and 6212 receives the second lower flange portion 11C to avoid interference with the second beam 11, and the load-bearing brace 12 Each of the second notches 6113 and 6213 receives the brace side inserted portion 121 so as to avoid interference with the brace side inserted portion 121. Further, in the first underlay material 61 and the second underlay material 62, each third notch portion 6115, 6215 receives the second upper flange portion 11B so as to avoid interference with the second beam 11. In addition, in the first underlay material 61 and the second underlay material 62, the load-bearing brace 1 The length of each second notch portion 6113, 6213 is adjusted according to the inclination angle of the brace side with respect to the second beam 11 to the shortest length that can accommodate the entire brace side inserted portion 121 in the first horizontal direction D2. be able to.

Furthermore, in the pre-cut cladding 7 consisting of the first cladding 71 and the second cladding 72 constituting the pre-cut parting wall material 5, each cladding connecting portion 7114, 7214 connects the second beam 11 and the load-bearing brace 12. The pre-cut underlay material 6 is overlapped with the pre-cut underlay material 6 while being placed in the gap between. Moreover, in the first upholstery material 71 and the second upholstery material 72, each of the first upholstery notches 7112 and 7212 receives the second lower flange portion 11C to avoid interference with the second beam 11. , each of the second overlay notches 7113 and 7213 receives the brace-side inserted portion 121 so as to avoid interference with the load-bearing brace 12. Furthermore, in the first upholstery material 71 and the second upholstery material 72, each of the third upholstery notches 7115 and 7215 receives the second upper flange portion 11B so as to avoid interference with the second beam 11. In addition, in the first top material 71 and the second top material 72, each top covering main body 7111, 7211 and each top covering extension portion 712, 722 are cut along the top covering cutting mark lines 51A, 51B, 51C. By cutting, the length of each second overlay notch 7113, 7213 can be adjusted according to the inclination angle of the load-bearing brace 12 with respect to the second beam 11, and the length of the entire brace-side inserted part 121 in the first horizontal direction D2 can be adjusted. Can be adjusted to the shortest acceptable length.

1 Parting wall structure 5 Pre-cut parting wall material 51A, 51B, 51C Cutting mark line 6 Pre-cut underlay material 61 First underlay material 611, 621 Covering portion 6112, 6212 First notch portion 6113, 6213 Second notch portion 6114, 6214 Connecting portion 612, 622 Extending portion 62 Second underlay material 7 Pre-cut overlay material 71 First overlay material 711, 721 Overlay covering portion 7112, 7212 First overlay notch portion 7113, 7213 Second overlay notch Parts 7114, 7214 Overlay connection portion 712, 722 Overlay extension portion 72 Second overlay member 10 First beam 11 Second beam 11C Second lower flange portion (beam side inserted portion)
12 Load-bearing brace 121 Brace-side inserted part 100 Building D1 Vertical direction D2 First horizontal direction D3 Second horizontal direction

Claims (7)

A parting wall structure that separates each dwelling unit in a building,
a first beam extending in a first horizontal direction;
a second beam extending from a side surface of the first beam in a second horizontal direction perpendicular to the first horizontal direction;
A load-bearing brace that extends from a position spaced apart in the first horizontal direction by a predetermined distance from a connecting portion of the second beam on a side surface of the first beam, the load-bearing brace separating from the second beam as it moves away from the first beam. A load-bearing brace that extends at an angle like this ,
a parting wall material attached from the second beam side to the side surface of the first beam ,
The parting wall material is
a first notch portion that is a covering portion for covering a side surface of the first beam and is capable of receiving a beam-side inserted portion preset on the second beam from one side in the first horizontal direction; a second notch portion capable of receiving a brace-side inserted portion preset in the load-bearing brace from the other side in the first horizontal direction;
an extending portion extending downward from the covering portion,
The covering portion is interposed between the first notch portion and the second notch portion such that the first notch portion and the second notch portion are spaced apart from each other in the first horizontal direction. A parting wall structure that has a connecting part. The covering portion and the extending portion adjust the length of the second cutout portion in the first horizontal direction according to the inclination angle of the load-bearing brace with respect to the second beam. The field according to claim 1, further comprising a cutting mark line that serves as a mark for cutting the covering part and the extending part to adjust the entire length in the first horizontal direction to the shortest acceptable length. wall structure . The second beam has a recess that is depressed in a direction away from the load-bearing brace with the beam-side inserted portion as a reference in a portion closer to the first beam than the beam-side inserted portion,
The thickness of the boundary wall material is set such that the connecting portion can be inserted into the gap formed by the recess between the beam-side inserted portion of the first beam and the second beam. and
The width dimension of the connecting portion in the first horizontal direction is the width of the minimum gap between the beam-side inserted portion of the second beam and the load-bearing brace when viewed along the second horizontal direction. The parting wall structure according to claim 1 or 2, wherein the parting wall structure is set to a value greater than or equal to the dimension on one beam. an underlayment material made of the parting wall material;
an overlay material that is stacked on the underlay material from the opposite side of the first beam ;
The lining material is
A first overlay notch which is an overlay covering portion for covering the overlaying portion of the underlayment material and is capable of receiving the beam-side inserted portion of the second beam from one side in the first horizontal direction. a second top notch portion capable of receiving the brace-side inserted portion of the load-bearing brace from the other side in the first horizontal direction; the first top notch portion and the second top notch portion; an overlay connecting part interposed between the first overlay notch and the second overlay notch so that the upper overlay notches are spaced apart from each other in the first horizontal direction. and,
an overlay extending portion extending downward from the overlay covering portion and covering the extending portion of the underlay material;
In a state in which the top lining material is stacked on the underlay material, the end surface of the top lining connecting portion on the second top lining notch portion side is connected to the bottom lining material according to the inclination of the load-bearing brace with respect to the second beam. The parting wall structure according to claim 3 , wherein the parting wall structure is located at a position farther from the second beam than an end surface of the connecting portion of the material on the second notch side. In the state in which the top covering material is stacked on the underlay material, the end surface on the other side in the first horizontal direction of the top covering portion and the top covering extension portion of the top covering material overlaps the end surface of the top covering portion and the top covering extension portion of the top covering material, The parting wall structure according to claim 4, wherein the parting wall structure is located at a position farther from the second beam than the other end surface of the covering part and the extending part in the first horizontal direction. In the underlayment, the covering portion and the extending portion adjust the length of the second notch in the first horizontal direction according to the inclination angle of the load-bearing brace with respect to the second beam. It has a cutting mark line that serves as a mark for cutting the covering part and the extending part for adjusting the entire length of the part in the first horizontal direction to the shortest acceptable length,
In the top covering material, the top covering portion and the top extending portion have a length in the first horizontal direction of the second top notch portion depending on the inclination angle of the load-bearing brace with respect to the second beam. an overlay that serves as a cutting mark for the overlay covering portion and the overlay extension portion for adjusting the entire length of the brace-side inserted portion in the first horizontal direction to the shortest length that can be accepted. It has a cutting mark line,
In the state where the top covering material is stacked on the underlay material, the end surfaces of the top covering portion and the top covering extension portion of the top covering material after being cut along the top cutting mark line are the same as the bottom covering material. The parting wall structure according to claim 4 or 5, wherein the parting wall structure is located at a position farther from the second beam than the end face of the material after cutting along the cutting mark line of the covering part and the extending part. The underlayment material includes a first underlayment material and a second underlayment material that are attached to the side surface of the first beam with the second beam in between and have end surfaces that can be butted against each other,
The top covering material includes a first top covering material and a second top covering material, which are overlapped with the first bottom covering material and the second bottom covering material, respectively, and have end surfaces that can be butted against each other,
The abutment position between the first underlayment material and the second underlayment material and the abutment position between the first upholstery material and the second overlayment material are different in the first horizontal direction. , the parting wall structure according to any one of claims 4 to 6.

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