JP2023042260A - Exterior wall mounting hardware, exterior wall mounting structure, and construction method of exterior wall mounting structure - Google Patents

Abstract

An exterior wall mounting bracket, an exterior wall mounting structure, and a method of constructing the exterior wall mounting structure are provided that enable single-person work and improve workability. An exterior wall mounting bracket (1) fixes an exterior wall material (4) formed in an L-shaped cross section having a vertical portion (40) and a horizontal portion (41) to a beam (3) having a horizontal flat plate-shaped lower flange portion (30) at least at the lower end. The exterior wall mounting hardware 1 includes a vertical flat plate-shaped first plate portion 10 fixed to the indoor side surface of the vertical portion 40 of the exterior wall material 4, and horizontally extending from the lower end of the first plate portion 10, A second plate portion 11 that contacts and is fixed to the lower surface of the lower flange portion 30, and a locking arm portion 12 that extends horizontally from the first plate portion 10 and contacts the upper surface of the lower flange portion 30. Prepare. [Selection drawing] Fig. 3

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exterior wall mounting hardware for fixing an exterior wall material having an L-shaped cross section to a beam, an exterior wall mounting structure using the exterior wall mounting hardware, and a construction method for the exterior wall mounting structure.

Conventionally, there has been known an exterior wall mounting structure in which an angle-shaped exterior wall mounting bracket fixed to an exterior wall material is fixed to a building frame such as a beam or a pillar, and the exterior wall material is attached to the building frame (Patent Document 1 to Patent Document 3). Specifically, in such an exterior wall mounting structure, for example, one mounting surface of the exterior wall mounting bracket is brought into contact with a frame-shaped or rail-shaped steel material formed on the back surface of the exterior wall material, and fixed with bolts and nuts. The other mounting surface of the exterior wall mounting bracket is brought into contact with the mounting portion formed in the shape of a horizontal plate on the frame of the building and fixed with bolts and nuts.

In such an exterior wall mounting structure, for example, as described in Patent Document 1, a vertical elongated hole for inserting a bolt is formed in one mounting surface of the exterior wall mounting bracket, and the other mounting surface of the exterior wall mounting bracket In some cases, horizontal long holes for inserting bolts are formed on the mounting surface of the wall, allowing adjustment of the unevenness and level of the outer wall material.

JP-A-5-311847 JP-A-6-185149 JP-A-10-169058

When constructing such an exterior wall mounting structure, it is necessary to tighten the bolts and nuts while holding the exterior wall material in a desired position. 2 or more workers are required. Also, when adjusting unevenness and level, similarly, a person holding the outer wall and two or more workers are required for the work of loosening and tightening the bolts and nuts.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an exterior wall mounting bracket, an exterior wall mounting structure, and a method of constructing the exterior wall mounting structure, which enable single-person work and improve workability.

The exterior wall mounting bracket of the present invention is an exterior wall mounting bracket for fixing an exterior wall material having an L-shaped cross section having a vertical portion and a horizontal portion to a beam having at least a horizontal flat plate-shaped lower flange portion at the lower end thereof. a vertical flat plate-shaped first plate portion fixed to the indoor side surface of the vertical portion of the exterior wall material; It is characterized by comprising a second plate portion and a locking arm portion extending horizontally from the first plate portion and in contact with the upper surface of the lower flange portion.

The exterior wall mounting structure of the present invention is formed in an L shape having a beam with a lower flange portion at its lower end, a vertical portion and a horizontal portion, and a groove portion of C-shaped steel extending horizontally along the back surface of the vertical portion. It is characterized by comprising the formed outer wall material and the above-described outer wall mounting bracket.

The outer wall mounting structure of the present invention is accommodated in the groove portion, is inserted into a mounting plate having a screw hole, and is inserted into the mounting hole formed in the first plate portion, and is screwed into the screw hole to A mounting bolt for mounting the outer wall mounting bracket to the outer wall material is further provided, and the mounting hole is an elongated hole elongated in the vertical direction.

The exterior wall mounting structure of the present invention is characterized in that the mounting bolt is a very low head bolt.

In the exterior wall mounting structure of the present invention, a fixing hole into which a fixing bolt is inserted is formed in the lower flange portion of the beam, and an insertion hole into which the fixing bolt is inserted is formed in the second plate portion. , wherein the insertion hole is an elongated hole elongated in the extending direction of the second plate portion.

The outer wall attachment structure of the present invention is characterized in that the fixing bolt is inserted into the insertion hole and the fixing hole from below, and a nut is fastened on the upper side of the lower flange portion.

In the exterior wall mounting structure of the present invention, the horizontal portion of the exterior wall material is formed so as to project from the lower end of the vertical portion so that a portion of the lower flange portion overlaps on the upper side, and the fixing hole is formed in the horizontal portion. is formed in the lower flange portion at a position where the second plate portion does not overlap, and the second plate portion extends in the horizontal direction from the lower flange portion, and an insertion hole is formed at a position overlapping the fixing hole. and

The exterior wall attachment structure of the present invention is characterized in that the beam is a reinforcing beam formed by fixing a T-shaped steel upside down to the lower surface of an H-shaped steel.

A method for constructing an exterior wall mounting structure according to the present invention is any one of the construction methods for an exterior wall mounting structure described above, wherein the first plate portion of the exterior wall mounting bracket is attached to the indoor side surface of the vertical portion of the exterior wall material. and holding the lower flange portion of the beam by sandwiching it between the locking arm portion and the second plate portion of the outer wall mounting bracket to which the outer wall material is attached; and a step of fixing the second plate portion.

According to the exterior wall mounting bracket of the present invention, in a state in which the first plate portion is fixed to the indoor surface of the vertical portion of the exterior wall material having an L-shaped cross section, the locking arm portion abuts on the upper surface of the lower flange portion of the beam. Since the second plate portion contacts the lower surface of the lower flange portion, the lower flange portion can be sandwiched and held between the locking arm portion and the second plate portion. Therefore, in a state where the exterior wall material is fixed to the first plate portion, the exterior wall mounting bracket can be temporarily placed on the lower flange portion. Since there is no need to fix the beams, the work of attaching the exterior wall materials to the beams can be done by one person. Moreover, since the second plate portion and the lower flange portion are temporarily placed before being fixed, the work of adjusting the position of the exterior wall material can be facilitated.

According to the exterior wall mounting structure of the present invention, the beam is formed in an L shape having a lower flange portion at the lower end, a vertical portion and a horizontal portion, and a C-shaped steel groove extends horizontally along the back surface of the vertical portion. Since the formed outer wall material and the outer wall mounting bracket are provided, the lower flange portion can be sandwiched between the locking arm portion and the second plate portion while the outer wall member is fixed to the first plate portion. Therefore, the external wall mounting bracket can be temporarily placed on the lower flange portion, and the work of mounting the external wall material to the beam can be safely performed by one person. Temporary placement also facilitates the work of adjusting the position of the exterior wall material.

According to the exterior wall mounting structure of the present invention, the mounting plate is accommodated in the groove formed in the back surface of the vertical portion of the exterior wall material, and the mounting bolts are inserted into the mounting holes formed in the first plate portion of the exterior wall mounting bracket. The outer wall mounting bracket is fixed to the outer wall material by screwing it into the screw hole of the mounting plate. can be adjusted vertically, and the vertical position of the exterior wall material attached to the beam can be adjusted.

According to the exterior wall mounting structure of the present invention, as described above, since the mounting hole is an elongated hole that is long in the vertical direction, the mounting bolt can move up and down within the range of the mounting hole with respect to the exterior wall mounting bracket. Although there is a possibility that the bolt head of the bolt interferes with the beam or the like, the interference can be suppressed because the mounting bolt is a very low head bolt.

According to the exterior wall attachment structure of the present invention, the beam and the exterior wall are fixed by inserting the fixing bolts into the fixing holes formed in the lower flange portion of the beam and the insertion holes formed in the second plate portion of the exterior wall attachment bracket. Since the insertion hole is an elongated hole in the extension direction of the second plate portion, the exterior wall mounting bracket and the exterior wall material fixed to the exterior wall mounting bracket are attached to the beam. can be moved, and the unevenness of the exterior wall material can be adjusted.

According to the exterior wall mounting structure of the present invention, the fixing bolt is inserted into the insertion hole and the fixing hole from below, and the nut is fastened above the lower flange portion, so only the bolt head is below the fixing bolt. is formed, the fixing bolt does not protrude greatly downward, and members such as the horizontal portion of the exterior wall material and the roof joists of the eaves can be prevented from interfering with the fixing bolt.

According to the exterior wall mounting structure of the present invention, the horizontal portion of the exterior wall material is formed so as to project from the lower end of the vertical portion so that a portion of the lower flange portion overlaps on the upper side, and the fixing hole formed in the lower flange portion is , the horizontal portion is formed at a position where it does not overlap, and the second plate portion extends in the horizontal direction from the lower flange portion, and an insertion hole is formed at a position overlapping the fixing hole, so that the fixing bolt can be inserted. Since the horizontal part of the exterior wall material does not interfere when the exterior wall mounting bracket to which the exterior wall material is fixed is fixed to the beam, the work of fixing the exterior wall material to the beam can be made relatively simple.

According to the exterior wall attachment structure of the present invention, the beam is a reinforcing beam formed by fixing the T-shaped steel upside down to the lower surface of the H-shaped steel. Although the space for the operator to insert his/her arms and tools is small compared to the case, the structure is such that it is temporarily placed and fixed from below, so that the external wall material can be processed relatively easily.

According to the construction method of the exterior wall mounting structure of the present invention, the step of attaching the first plate portion of the exterior wall mounting bracket to the indoor side surface of the vertical portion of the exterior wall material; and the second plate portion sandwiching and holding the lower flange portion of the beam, and the step of fixing the lower flange portion and the second plate portion. The construction work of the external wall attachment structure can be performed.

The perspective view which shows the whole structure of an outer wall attachment metal fitting. The perspective view seen from another angle which shows the whole structure of an outer wall attachment metal fitting. Cross-sectional view showing the overall configuration of the exterior wall mounting structure The figure which shows the process which attaches an exterior wall mounting bracket to an exterior wall material. FIG. 7 is a diagram showing a process of adjusting the height direction position of the outer wall material with respect to the outer wall mounting bracket; The figure which shows the process of temporarily placing the external wall material which attached the external wall mounting metal fittings on the lower flange part of a beam. The figure explaining the state which performs unevenness adjustment of an exterior wall material. The figure which shows the state which attaches a joist and an eaves board material.

An exterior wall mounting bracket 1, an exterior wall mounting structure 2, and an exterior wall mounting structure construction method according to the present invention will be described below with reference to the drawings. The building in which the exterior wall attachment structure 2 of the present embodiment is arranged is, for example, a steel-framed house. The building provided with the exterior wall mounting structure 2 according to the present invention is not limited to a house, and can be used for various facilities regardless of whether they are habitable or not. The exterior wall mounting structure 2 in this embodiment is a structure in which an exterior wall material 4 is fixed via an exterior wall mounting bracket 1 to a beam 3 arranged in a lintel formed on the upper edge of an opening (not shown) on the outdoor side. .

As shown in Fig. 3, the beam 3 is formed by connecting the upper and lower flanges with a web, and the lower surface of the H-shaped steel is fixed to the lower surface of the H-shaped steel. It is a reinforcing beam of a shape formed by connecting the flanges of the two with a web provided in the center in the width direction. The outer wall mounting bracket 1 is fixed to the lower flange portion 30 on the lowest side among the three-tiered flanges of the beam 3 . The shape of the beam 3 in the exterior wall attachment structure 2 of the present invention is not limited to the reinforcing beam described above, but at least the beam 3 has a lower flange portion 30 formed at its lowermost end.

The exterior wall material 4 is a plate member made of, for example, concrete and having an L-shaped cross section, which has a vertical portion 40 and a horizontal portion 41 extending from the lower end of the vertical portion 40 toward the indoor side. C-shaped steel extending in the horizontal direction is embedded in the back surface of the vertical portion 40 of the outer wall material 4 to form a groove portion 42 . An uneven pattern (not shown) is formed on the outdoor surface of the vertical portion 40 of the exterior wall material 4 .

As shown in FIGS. 1 to 3, the exterior wall mounting bracket 1 is formed by bending a steel plate, and includes a vertically formed flat first plate portion 10 and a lower end of the first plate portion 10. and two locking arm portions 12 extending horizontally by bending from the left and right side ends of the first plate portion 10, respectively. The first plate portion 10 has a rectangular flat plate shape fixed to the indoor side surface of the vertical portion 40 of the exterior wall material 4 . The first plate portion 10 is formed with a mounting hole 13 for fixing the external wall mounting bracket 1 to the groove portion 42 of the external wall material 4 . The mounting hole 13 is a vertically elongated hole formed along the widthwise center line of the first plate portion 10 . The threaded portion of the mounting bolt 14 can be inserted into the mounting hole 13, and the head portion of the mounting bolt 14 cannot be inserted. The mounting plate 15 is formed in the shape of a flat plate and has a screw hole 16 in the center into which the threaded portion of the mounting bolt 14 can be screwed. The mounting bolt 14 is a very low head bolt. The height of the head of the ultra-low head bolt is, for example, 1.5 mm or less, and is preferably as low as possible within the range where the necessary joint strength between the exterior wall material 4 and the exterior wall mounting bracket 1 is provided.

The second plate portion 11 horizontally extends from the lower end of the first plate portion 10 and contacts and is fixed to the lower surface of the lower flange portion 30 of the beam 3 . The extension length of the second plate portion 11 from the lower end of the first plate portion 10 is slightly longer than the width of the lower flange portion 30 of the beam 3, and the second plate portion 11 is the outer wall material 4 of the lower flange portion 30. to an edge away from the The second plate portion 11 extends indoors longer than the horizontal portion 41 of the outer wall material 4, and the tip of the second plate portion 11 is formed to protrude from the horizontal portion 41 of the outer wall. The second plate portion 11 is formed with an insertion hole 18 into which a fixing bolt 17 can be inserted. The second plate portion 11 is fixed to the lower flange portion 30 by being inserted into the fixing hole 19 and tightening the nut 20 . The fixing hole 19 is formed in the lower flange portion 30 at a position separated from the outer wall material 4 , and the insertion hole 18 is formed at a position overlapping the fixing hole 19 of the second plate portion 11 . The position where the insertion hole 18 is formed is the position where the second plate portion 11 protrudes from the horizontal portion 41 of the outer wall member 4, and the outer wall is attached to the lower flange portion 30 without the horizontal portion 41 of the outer wall member 4 becoming an obstacle. The mounting bracket 1 can be fixed. The fixing hole 19 formed in the lower flange portion 30 of the beam 3 is a through hole slightly larger than the nominal diameter of the screw portion of the fixing bolt 17, and the insertion hole 18 formed in the second plate portion 11 It is an elongated hole elongated in the extending direction of the second plate portion 11 . Since the insertion hole 18 is an elongated hole, the outer wall mounting bracket 1 can be moved along the length direction of the insertion hole 18 with the fixing bolt 17 inserted in the insertion hole 18, and the vertical portion of the outer wall member 4 can be moved. 40 irregularities can be adjusted.

The locking arm portions 12 are formed so as to extend horizontally above the second plate portion 11 from both side edges of the first plate portion 10 . The locking arm portion 12 is parallel to the second plate portion 11 and forms a gap substantially equal to the thickness of the lower flange portion 30 between the locking arm portion 12 and the second plate portion 11 . By arranging the beam 3 sandwiched between the locking arm portion 12 and the second plate portion 11 of the exterior wall mounting bracket 1, the exterior wall mounting bracket 1 can be temporarily placed on the beam 3 and fixed to the exterior wall mounting bracket 1. The external wall material 4 can also be provisionally arranged. In this way, by fixing the exterior wall material 4 to the first plate portion 10 and temporarily placing the exterior wall mounting bracket 1 on the lower flange portion 30, the exterior wall material 4 is lifted to the position where it should be fixed. The work of fixing the second plate portion 11 and the lower flange portion 30 with the fixing bolts 17 can be performed, and the work of attaching the exterior wall material 4 to the beam 3 can be performed by one person. Further, since the second plate portion 11 and the lower flange portion 30 are temporarily placed before being fixed, the work of adjusting the position of the outer wall member 4 can be facilitated.

Above the vertical portion 40 of the exterior wall material 4, as shown in FIG. and a joint material 22 is filled to form a horizontal joint. In addition, on the indoor side of the horizontal portion 41 of the exterior wall material 4, a ceiling joist 23 is provided and an eaves board material 24 is laid. A gap is formed between the edge of the eaves plate material 24 and the horizontal part 41 of the exterior wall material 4, and an eaves clearance member 25 is provided.

In the construction method of the exterior wall mounting structure for constructing the exterior wall mounting structure as described above, first, as shown in FIG. Specifically, first, the mounting plate 15 is inserted into the groove portion 42 formed in the indoor side surface of the vertical portion 40 of the exterior wall material 4 . The mounting plate 15 has short sides shorter than the opening between the lips of the groove portion 42 and long sides longer than the opening between the lips. Therefore, after inserting the mounting plate 15 into the groove 42 through the opening with the short side of the mounting plate 15 facing the width direction of the opening of the groove 42 , the mounting plate 15 is rotated by 90 degrees so that the inside of the groove 42 is be stored in Then, the first plate portion 10 of the outer wall mounting bracket 1 is brought into contact with the lip of the groove portion 42, the mounting bolt 14 is inserted into the mounting hole 13 formed in the first plate portion 10, and the screw hole 16 of the mounting plate 15 is inserted. , and further tightening the mounting bolt 14, the lip of the groove portion 42 is sandwiched between the mounting plate 15 and the first plate portion 10, and the exterior wall mounting bracket 1 is mounted to the exterior wall material 4. - 特許庁When the exterior wall member 4 is attached to the exterior wall mounting bracket 1, the second plate portion 11 of the exterior wall mounting bracket 1 is formed to extend longer than the horizontal portion 41 of the exterior wall member 4, and the insertion hole 18 of the second plate portion 11 is formed. is arranged at a position not overlapping the horizontal portion 41 of the outer wall material 4 .

Then, as shown in FIG. 6, the outer wall member 4 to which the outer wall mounting bracket 1 is attached is lifted to a position where the outer wall member 4 is arranged, and the locking arm portion 12 and the second plate portion 11 of the outer wall mounting bracket 1 are engaged. By sandwiching the lower flange portion 30 of the beam 3, the external wall material 4 is temporarily placed on the beam 3. Next, the height position of the external wall material 4 temporarily placed on the beam 3 is confirmed, and if the height of the external wall material 4 needs to be adjusted vertically, the external wall material 4 is temporarily removed from the beam 3. Remove. At this time, the outer wall mounting bracket 1 attached to the outer wall member 4 is simply sandwiched between the locking arm portion 12 and the second plate portion 11 to sandwich the lower flange portion 30 of the beam 3, so that the outer wall member 4 can be removed very easily. It can be removed from the beam 3. After that, the mounting bolts 14 are loosened to adjust the height direction position of the exterior wall material 4 with respect to the exterior wall mounting bracket 1 along the mounting holes 13, and the mounting bolts 14 are tightened again to attach the exterior wall mounting bracket 1 to the exterior wall material 4. Once attached, the outer wall member 4 is temporarily placed on the beam 3 by sandwiching the lower flange portion 30 of the beam 3 between the locking arm portion 12 and the second plate portion 11 of the outer wall mounting bracket 1 again. At this time, as shown in FIG. 5, by adjusting the position of the outer wall material 4 in the height direction, the bolt head of the mounting bolt 14 moves up and down along the mounting hole 13, which is an elongated hole in the vertical direction. As a result, the bolt head and the lower flange portion 30 of the beam 3 approach each other. Position adjustment in the vertical direction can be performed appropriately.

Then, as shown in FIG. 7, the fixing bolt 17 is inserted from below into the insertion hole 18 formed in the second plate portion 11 of the exterior wall mounting bracket 1, and further the fixing hole formed in the lower flange portion 30 of the beam 3 The second plate portion 11 and the lower flange portion 30 are connected by inserting the fixing bolt 17 into the lower flange portion 30 and tightening the nut 20 to the fixing bolt 17 on the lower flange portion 30 . Since the fixing bolt 17 is inserted from the lower side, only the bolt head of the fixing bolt 17 protrudes from the lower side of the second plate portion 11, and the threaded portion of the fixing bolt 17 is downward as in the case of fixing from the upper side. As shown in FIG. 8, it is possible to prevent interference with other members such as the joist 23 of the edge of the eaves. In addition, since the outer wall mounting bracket 1 has the lower flange portion 30 sandwiched between the locking arm portion 12 and the second plate portion 11, the outer wall material 4 and the outer wall mounting bracket 1 are temporarily placed, so that the outer wall mounting bracket 1 is fixed from below. When the work of inserting the bolt 17 into the insertion hole 18 and the fixing hole 19 and fixing is performed, the worker does not need to support the exterior wall member 4 and the exterior wall mounting bracket 1, and the work can be relatively easily performed by one worker. It can be carried out. At this time, unevenness of the vertical portion 40 of the outer wall material 4 is adjusted before the fixing bolt 17 and the nut 20 are completely tightened. The insertion hole 18 formed in the second plate portion 11 and into which the fixing bolt 17 is inserted is an elongated hole, and the outer wall mounting bracket 1 sandwiches the lower flange portion 30 between the locking arm portion 12 and the second plate portion 11. , the unevenness can be adjusted by pulling out the outer wall mounting bracket 1 in the outdoor direction or pushing it in the indoor direction. When the unevenness is adjusted, the fixing bolts 17 are sufficiently tightened to fix the outer wall mounting bracket 1 and the lower flange portion 30, thereby fixing the outer wall material 4 to the beam 3.

After that, as shown in FIG. 8, the joists 23 are fixed, the eaves board material 24 is laid, and further, as shown in FIG. On the upper side of the vertical portion 40 of the outer wall material 4, a gap formed between the outer wall material 4 and the upper outer wall material 5 is filled with the backup material 21 and the joint material 22 to form a horizontal joint.

It goes without saying that the embodiment of the present invention is not limited to the above-described embodiments, and can be modified as appropriate without departing from the scope of the idea of the present invention.

An exterior wall mounting bracket 1, an exterior wall mounting structure 2, and a method of constructing an exterior wall mounting structure according to the present invention are provided by: It is suitable as a construction method for the exterior wall mounting bracket 1 for mounting the exterior wall material 4, the exterior wall mounting structure 2, and the exterior wall mounting structure.

Reference Signs List 1 exterior wall mounting bracket 2 exterior wall mounting structure 3 beam 4 exterior wall material 10 first plate portion 11 second plate portion 12 locking arm portion 13 mounting hole 14 mounting bolt 15 mounting plate 16 screw hole 17 fixing bolt 18 insertion hole 19 fixing hole 30 Lower flange portion 40 Vertical portion 41 Horizontal portion 42 Groove portion

Claims (9)

An exterior wall mounting bracket for fixing an exterior wall material having an L-shaped cross section having a vertical portion and a horizontal portion to a beam having at least a horizontal flat plate-shaped lower flange portion at the lower end thereof,
a vertical flat plate-shaped first plate portion fixed to the indoor side surface of the vertical portion of the exterior wall material;
a second plate portion horizontally extending from the lower end of the first plate portion and fixed in contact with the lower surface of the lower flange portion;
a locking arm portion extending horizontally from the first plate portion and in contact with the upper surface of the lower flange portion;
An exterior wall mounting bracket, comprising: a beam provided with a lower flange portion at its lower end;
an exterior wall material formed in an L shape having a vertical portion and a horizontal portion, and having a C-shaped steel groove formed in the horizontal direction along the back surface of the vertical portion;
The exterior wall mounting bracket according to claim 1;
An exterior wall attachment structure comprising: a mounting plate received in the groove and having a screw hole;
a mounting bolt that is inserted into a mounting hole formed in the first plate portion and screwed into the screw hole to mount the outer wall mounting bracket to the outer wall material;
3. The exterior wall attachment structure according to claim 2, wherein the attachment hole is a vertically elongated hole. 4. The exterior wall mounting structure according to claim 3, wherein the mounting bolt is a very low head bolt. A fixing hole into which a fixing bolt is inserted is formed in the lower flange portion of the beam, and an insertion hole into which the fixing bolt is inserted is formed in the second plate portion,
5. The exterior wall attachment structure according to claim 3, wherein the insertion hole is an elongated hole elongated in the extending direction of the second plate portion. 6. The exterior wall attachment structure according to claim 5, wherein the fixing bolt is inserted into the insertion hole and the fixing hole from below, and a nut is fastened on the upper side of the lower flange portion. The horizontal part of the outer wall material is formed to protrude from the lower end of the vertical part so that a part of the lower flange part overlaps on the upper side,
The fixing hole is formed in the lower flange portion at a position where the horizontal portion does not overlap,
7. The exterior wall attachment structure according to claim 6, wherein said second plate portion extends in the horizontal direction from said lower flange portion and has an insertion hole formed at a position overlapping said fixing hole. 8. The beam is a reinforcing beam formed by fixing an upside-down T-shaped steel to the lower surface of the H-shaped steel. exterior wall mounting structure. A construction method for an exterior wall attachment structure according to any one of claims 2 to 8,
attaching the first plate portion of the exterior wall mounting bracket to the indoor surface of the vertical portion of the exterior wall material;
a step of sandwiching and holding the lower flange portion of the beam between the locking arm portion and the second plate portion of the exterior wall mounting bracket to which the exterior wall material is attached;
fixing the lower flange portion and the second plate portion;
A construction method for an exterior wall attachment structure, comprising:

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