JPS6183744A - Fire resistant structure of ceiling backside - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field] The present invention improves fire resistance and workability by shielding the space between an upper fireproof plate and a lower fireproof plate that block the attic space with a flexible flame retardant material. Regarding the fireproof structure of the attic space, which has been improved.

[Background technology]

In recent years, in order to prevent the spread of flames in the attic space of apartment complexes, houses, etc. in the event of a fire, it has become necessary to block the attic space with a fire stop for simple fireproof structures that falls under the ministerial ordinances of the Ministry of Construction and the Ministry of Finance. Established by regulations.

On the other hand, in buildings using the dry method 1 method in which ceilings, floors, walls, etc. are formed using panels, reinforcing materials such as places or conductors such as electrical and gas wiring, piping, etc. are installed in the attic space. An insertion member such as the frame is passed.

Conventionally, firestops for such buildings have used so-called rock wool boards, which are made of rock wool formed into a board shape, to block the attic space. However, in order to insert the insertion member, it is necessary to make slits in the rock wool board in advance by on-site work, which is time-consuming and time-consuming.
In addition, the film formed by the slits tends to form gaps, resulting in problems such as poor flame blocking performance.

[Purpose of the invention]

The present invention improves workability and fire resistance by forming a gap for passing an insertion member between an upper fireproof plate and a lower fireproof plate that block the attic space, and shielding with a flexible flame retardant material. The purpose of the present invention is to provide a fireproof structure for an attic space that can improve the above-mentioned problems and solve the above-mentioned problems.

[Disclosure of the invention]

An embodiment of the present invention will be described below based on the drawings.

In the figure, the fireproof structure of the attic space includes a lower fireproof board 6 and an upper fireproof board that are attached to a ceiling board part 2 and an upper board part 4 facing above the attic space 3, respectively, and which block the attic space 3. Board 7
The gap 5 formed between the opposing edges of the flexible N smoked material 9
It is shielded by A and 9B. In this embodiment, the ceiling plate part 2 and the upper plate part 4 form a floor F above a ceiling C1 in a building using the dry type 1 method.

The ceiling panel part 2 consists of a ceiling base material 17 that has been subjected to fireproofing treatment on the lower surface of the ceiling panel P1, in which crosspieces 13 are passed in a lattice-like manner between the outer frame members 11 that are joined in a rectangular shape. and finishing material 1
9 is attached.

The ceiling panel P1 is supported by a partitioning wall panel P3 rising from the floor, and is also supported by the ceiling base material 17.
, finishing material 19 is interrupted at the wall panel P3.

In addition, the wall panel P3 has face materials 23 and 23 attached to the front and back sides of a framework in which the frame materials 21 are arranged in a rectangular shape.

Note that the finishing material 19 has its peripheral edge decorated by the surrounding edge 27 of the wall panel P3.

In this embodiment, the upper plate part 4 is a floor panel P2, and is the upper surface of a frame 35 in which a horizontal frame 33 of a small height is passed between the vertical frames 31 and 31 with the upper surfaces aligned. Underfloor material 3
7 attached thereto, and the floor panel P2 is supported above the ceiling board part 2 and across the attic space 3 by means of an upper floor beam, a girder, etc., as appropriate.

The ceiling panel P1 has one crosspiece 13 located at the upper side edge of the wall panel P3, and the floor panel P2
A horizontal frame member 33 is constructed such that its side surface is located in the same vertical plane as the side surface of the crosspiece 13.

In the above-mentioned attic space 3, a reinforcing place B passing almost horizontally, or an insertion portion 10 for wiring, piping, etc., is passed through the frame.

Further, a lower fireproof plate 6 is provided on the ceiling plate part 2 and the upper plate part 4, extending on the sides facing each other and blocking the attic space 3 by creating a gap 5 between the opposing edges to allow the insertion member 10 to pass through. and the upper fireproof plate 7 are respectively attached.

The upper and lower fireproof plates 7.6 are oblong rectangular flat plates, and are treated with fireproofing by applying a flame-retardant material such as diammonium phosphate aqueous solution or fireproof paint mainly composed of amine-based synthetic resin. It is formed using wood with a thickness of 40 m or more.

In addition, the lower fireproof board 6 has the frame material 1 of the ceiling panel P1 on its lower edge.
1. By providing a notch 41 for inserting the crosspiece 13, the lower surface thereof is brought into close contact with the upper surface of the wall panel P3, and the diagonal nails 43 are placed along the side surface of the crosspiece 13 on the upper surface.
It is fixed using - and stands up from the ceiling board part 2. The height of the lower fireproof plate 6 is set so that the upper surface is located slightly below the height of passage of the insertion member 10, and a flexible flame retardant material 9B, such as a lock, is provided on the upper surface. Wool, glass wool, etc. is pasted along its entire length. Note that both ends of the lower fireproof board 6 are connected to a wall facing the attic space 3.

The upper fireproof board 7 has a dimension in which the total height with the lower fireproof board 6 is equal to the height between the upper surface of the wall panel P3 and the floor base material 37, and at its upper end, the frame material 31 Notch 4 into which the
5 will be provided. The main fireproof board 7 is attached to the side surface of the horizontal frame material 33 above the wall panel P3, with its upper end in contact with the lower surface of the floor base material 37.

Note that the side ends are brought into contact with the wall surface facing the attic space 3.

Therefore, the upper fireproof board 7 faces the lower fireproof board 6 and crosses the attic space 3, so that the two cooperate to block the attic space 3. A relatively long U-shaped groove 47 is formed at the lower end of the upper fireproof plate 7, and the groove 47 forms a gap 5 between the upper and lower fireproof plates 7.6 through which the 141 through member 10 is passed. be done. Further, the groove portion 47 includes a cough groove portion 4.
A flame retardant material 9A having the same height as 7 is pasted over its entire length.

By fitting the frame material 11, crosspiece 13, .
It can be attached to the top surface and prevents flame from going around from the bottom end. Father fireproof board 7 has vertical crosspiece 3 in notch 45
1-... by inserting the upper surface of the subfloor material 37
It can come into contact with the bottom surface and prevent the flame from going around from the top end.

Also, the gap 5 is made of M smoked wood 9A between the upper and lower fireproof plates 7.6.

Can be shielded by 9B. Further, the H filling materials 9A and 9B have flexibility, so that the insertion member 10 can be inserted therethrough.

Further, the lower fireproof plate 6 is provided with a flame retardant material 9B along its entire length to cover gaps caused by dimensional errors, installation errors, etc. between the lower fireproof plate 6 and the upper fireproof plate 7, thereby improving fireproof performance.

In the attic fireproof structure of the present invention, the groove 47 can be provided in the lower fireproof board 6, or the groove 47 can be provided in both the lower fireproof board 7.6. Furthermore, the groove portion 47
They can be formed in a plurality of shapes in a sandwiched manner according to the insertion position of the insertion member 10, and their shape can be changed into various shapes, such as a circular shape, for example, according to the insertion member 10.

〔Effect of the invention〕

As described in the paper, the attic fireproof structure of the present invention has a ceiling panel section and an upper panel section facing above the attic space, with a gap between the opposing edges for passing the insertion member. In addition to installing the upper and lower fireproof boards that block the space,
Since the gap is shielded by flexible #i combustion material, there is no need to provide a slit in alignment with the insertion member, unlike when using a conventional rock wool board.
Simply attaching the upper and lower fireproof plates allows the insertion member to pass through, improving workability. In addition, the flexible flame retardant material allows the position of the insertion member to be articulated even after the upper and lower fireproof plates are installed, and it is also possible to insert a new insertion member.
It can have many effects such as improving workability and fire resistance.

The attic fireproof structure of the present invention can also be employed in a case where the upper plate portion is a roof body and the attic space is formed in the attic.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing the upper and lower fireproof plates. 2-Ceiling board part, 3-Attic space, 4-Upper board part, 5-
Gap, 6.--Lower fireproof plate, 7.-Upper fireproof plate, 9
A, 9B-flame retardant material, 10...-insertion member.

Claims (1)

[Claims] (1) The ceiling plate part and the upper plate part facing each other across the attic space above the ceiling board part have a gap that extends to the sides facing each other and allows the insertion member passing through the attic space to pass between the opposing edges thereof. A fireproof structure for an attic space, in which an upper fireproof board and a lower fireproof board are respectively installed to block the attic space, and the gap is shielded by a flexible flame retardant material.