JPS6133946B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for constructing a fireproof wall formed by spraying a fireproof wall material such as rock wool mortar.

Conventionally, in order to construct a fireproof wall, a large number of studs were erected with the upper and lower ends fixed to ceiling runners and floor runners, and then metal lath was placed between the studs on the outdoor and indoor sides. , fix the metal lath to the stud via the clip.

Thus, fireproof walls were formed by spraying fireproof wall materials such as rock wool mortar onto the metal lath from outdoors and onto the metal lath from indoors to a predetermined thickness.

However, at sites where wall material cannot be sprayed from outside due to adjacent buildings, etc., the wall material is first sprayed from indoors onto the outdoor metal lath, and then the wall material is sprayed onto the indoor metal lath.

In this case, since the space between the outdoor wall and the indoor wall becomes narrow, there is a drawback that it is not possible to obtain a space defined for a fireproof structure.

Furthermore, since the metal lath is located on the outdoor side of the outdoor wall, if a fire breaks out in an adjacent building, the metal lath will melt due to the heat, weakening the supporting capacity of the outdoor wall.

This also had the disadvantage that the walls would collapse.

In this invention, even if the outdoor wall and the indoor wall are formed from the indoor side, a predetermined space (same as the width of the stud) is obtained between the outdoor wall and the indoor wall, and the metal lath of the outdoor wall is melted. The aim is to prevent the walls from collapsing and to eliminate the above-mentioned drawbacks.

This invention involves protruding the metal lath to be attached to the outdoor side of the stud by the thickness of the wall to be formed, attaching reinforcing bar mesh to the outdoor side of the stud, and forming the outdoor wall by spraying fireproof wall material. To provide a method for constructing a fireproof wall by spraying a fireproof wall material onto a metal lath installed indoors.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, as shown in FIG. 3, the floor runner 3 and ceiling runner 3' facing the floor 1 and ceiling 2 are fixed.

The above floor runner 3 and ceiling runner 3' are
In the illustrated case, there is a belt-shaped main plate 4, and side plates 5 that are connected from both side edges of the main plate 4 and face each other on one side of the main plate 4.
The main board 4 is placed on the floor and the ceiling, and then fixed by nails 6 driven from the main board 4 into the floor 1 and ceiling 2.

Next, the studs B are erected at a predetermined distance from side to side while supporting the upper and lower ends of the ceiling runner 3' and the floor runner 3 via the mounting fittings A.

In the illustrated case, the stud B is composed of a porous strip-shaped main wall 7 and side walls 8 that are continuous from both side edges of the main wall 7 and face each other on one side of the main wall 7,
When the stud B is erected, the edge of the side wall 8 is made to match the side edge of the side plate 5 of the floor runner 3 and ceiling runner 3'.

The mounting bracket A used when constructing the stud B includes a rectangular main plate 9 made of a bendable metal plate having the same width as the main wall 7 in the illustrated case, and a main plate 9 connected from both side edges of the main plate 9. A side plate 10 bent to face each other on one side, and a slit 11 formed inward from one end of the ridgeline between the side plate 10 and the main plate 9.
, claw pieces 12 connected from the lower side of both side plates 10 and projected inwardly from each other, straight slits 13 facing inward from the other end surface of side plate 10 , and inward from the side edge of one end of side plate 10 . It is composed of an L-shaped slit 14 having a horizontal portion facing toward the side, and a vertical portion extending from the inner end of the horizontal portion and extending along the side edge of the side plate 10.
To use this, first, one end portion of the side plate 10 which is curved outwardly is fitted onto the outside of both side plates 5 of the ceiling runner 3 and the floor runner 3.

Next, use a hammer or the like to turn one end of the side plate 10 inward,
That is, by striking the side plate 5, the curve of the side plate 10 is flattened, and the pair of claw pieces 12 are attached to the runners 3, 3'.
It is circumscribed by the main plate 4 of.

After fitting the upper and lower ends of the stud B into the inside of the mounting bracket A, abutting the edge of the side wall 8 on the main plate 9, and making the side plate 10 circumscribe the side wall 8, the outer side of the slits 13 and 14 is While bending the side plates 10 inwardly, bending pieces 1 are attached to the edges of the side plates 10.
By circumscribing the studs B, the upper and lower ends of the studs B can be attached to the ceiling runner 3' and the floor runner 3 via the mounting fittings A.

Next, as shown in Fig. 4, metal lath C is placed on the outdoor side of stud B.
Attach the metal lath C using the protruding clip D whose end is locked to the stud B so that the distance between the metal lath C and the metal lath C is approximately equal to the thickness of the outdoor wall.

In the illustrated case, the protruding clip D includes a substrate 16, a protruding plate 17 connected from the upper and lower edges of the substrate 16 and bent so as to face each other on one side of the substrate 16, and a protruding plate 17 connected from the end of the substrate 16 to the substrate 16. 16
A fitting part 18 which is U-shaped in plan and protrudes in the direction of the other surface and is fitted into the side wall 8 of the stud B, and a bendable engagement part which extends from the end edge of the protruding plate 18 and is engaged with the edge of the side plate 8. A stopper piece 9 and a bendable protrusion piece 2 that is connected from the front edge of the substrate 16 and pierces the metal lath C.
0, and how to use the protruding clip D is to first fit the fitting part 18 into the wall 8 of the stud B, and then bend the locking piece 19 so as to lock it to the edge of the side wall 8. The end of the protruding clip D is attached to the stud B.

After the projecting clip D is attached to a predetermined position between the top and bottom of each stud B as described above, the protruding piece 20 is stuck into the metal lath C, and then the protruding piece 20 is bent to support the metal lath C.

Further, the upper and lower edges of the metal lath C are supported by the floor runner 3 and ceiling runner 3' via clips E.

The above-mentioned clip E is provided with a hook 22 at the tip of the protruding rod 21 and an inverted U-shaped hook 23 at the end of the protruding rod 21, and after passing the hook through the metal lath C and locking it, the runners 3, A clamping portion 23 is fitted into the side plate 5 of the housing.

After attaching the metal lath C, a reinforcing bar mesh F is fitted between each stud B as shown in FIG. 5, and the reinforcing bar mesh F is attached to the stud B via the clip G.

The above-mentioned clip G includes a horizontal arm 24, a plate-like body 25 protruding from the center of one side edge of this arm 24, and a plate-like body 25 provided on one side edge of this plate-like body 25 so as to fit into the side wall 8 of the stud B. Consisting of a fitting portion 26 having a U-shape in plan, a bendable locking piece 27 provided at the tip edge of the plate-shaped body 25, and bendable holding pieces 28 provided on both sides of the arm 24. The method of use is to fit the fitting part 26 into the side wall 8 of the stud B, and then attach the locking piece 27 to the edge of the side wall 8 while bending the locking piece 27 toward the front side. Thereafter, the ends of the horizontal reinforcements 30 of the reinforcing bar mesh F, which is formed by intersecting the parallel horizontal reinforcements 30 with the parallel vertical reinforcements 29 and fixing the intersections by spot welding, are attached to a pair of upper and lower holding pieces 28.
The reinforcing bar mesh F is attached by fitting the reinforcing bar mesh F into the space between the reinforcing bars 30 and enclosing the transverse reinforcement 30 by bending the enclosing piece 28.

Then, as shown in FIG. 6, a fireproof wall material such as rock wool mortar is sprayed onto the metal lath C from the indoor side to form an outdoor wall H.

At this time, the reinforcing bar mesh F is buried in the outdoor wall H.

After forming the outdoor wall H, a metal lath C' is attached to the indoor surface of the stud B as shown in FIG.

The installation of the above metal lath C′ is as shown in the diagram.
A bent plate 31 bent into an L-shape in a plane, hook parts 32 and 33 provided by folding the tip and end of the bent plate 31 onto the back surface of the bent plate 31, and the bent plate 31.
A clip I is formed by a bendable projecting piece 34 protruding from the tip of the stud B, a hook part 33 is provided at the edge of the hole 35 provided in the main plate 4 of the stud B, and a hook part is provided at the side edge of the side wall 8. 32 are fitted and locked, the clip I is attached to the stud B, and the metal lath C' is inserted into the protruding piece 34. Then, the metal lath C' is attached to the stud B by bending the protruding piece 34.
Install.

Further, the upper and lower edges of the metal lath C' are supported by bending the cut and raised pieces 35' after piercing the metal lath C' into the cut and raised pieces 35' provided on the floor runner 3 and ceiling runner 3'. .

Then, as shown in FIG. 8, a fireproof wall material such as rock wool mortar is sprayed onto the metal lath C' to a predetermined thickness to form an indoor wall J.

As described above, according to the method for constructing a fireproof wall according to the present invention, a metal lath is attached to the outdoor side of the stud via a protruding clip so that the protruding length from the stud becomes the thickness of the outdoor wall. After spraying wall material from indoors to form an outdoor wall, a metal lath is supported on the indoor surface of the stud, and the wall material is sprayed or painted on this metal lath to form an indoor wall, so the outdoor wall and the indoor wall are different. The distance between the two is not narrowed.

Therefore, it is possible to obtain a space specified by fire resistance standards, and even if there is a building or the like in the adjacent area, construction can be carried out from indoors without any problems.

In addition, since the reinforcing bar mesh is supported by the studs and the above-mentioned reinforcing bar mesh is buried in the outdoor wall, the outdoor wall is reinforced and the metal lath of the outdoor wall is prevented from melting due to a fire breaking out in an adjacent building. However, the reinforcement mesh can prevent the wall from collapsing.

[Brief explanation of the drawing]

The drawings show the construction method of the present invention. Figure 1 is an exploded perspective view of each member and part, Figure 2 is a longitudinal side view during construction, and Figures 3 to 8 are longitudinal sections showing the construction process. FIG. A...Mounting bracket, B...Stud, C, C'...Metal lath, D...Extrusion clip, E...Clip,
F...Reinforcement mesh, G...Clip, H...Outdoor wall,
I...Clip, J...Indoor, 1...Floor, 2...Ceiling, 3
...floor runner, 3'...ceiling runner.

Claims (1)

[Claims] 1. After installing studs between the floor runner and ceiling runner with a predetermined interval left and right, protruding clips are installed on the outdoor side of the studs so that the length of the studs protruding from the studs is the same as the thickness of the outdoor wall. Attach the intervening metal lath, fit a reinforcing bar mesh between each stud, support the side edge of the reinforcing bar mesh on the outdoor edge of the stud, and insert a rock into the metal lath from indoors so that the reinforcing bar mesh is buried. After spraying a fireproof wall material such as cotton mortar to form an outdoor wall, a metal lath is supported on the indoor surface of the stud, and then a fireproof wall material is sprayed or painted to a specified thickness on the metal lath to form an indoor wall. A method of constructing a fireproof wall characterized by forming a wall.