JPH0988205A - Fire proof structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fire proof structure of a building having an effect on the prevention of a fire spreading. SOLUTION: In the fireproof structure of a building 11, which has a ventilating path 19 formed in space between a wall material 17 and a sheathing material 18 mounted on the wall material 17 and in which a throating material 29 is installed on the lower side of the sheathing material 18 so that one end section 31 of the throating material 29 is inserted into the ventilating path 19, a section oppositely faced to the underside of the siding 27 of the sheathing material 18 in the bent section 32 of the throating material 29 is coated with high-temperature foamable paints 34. The high-temperature foamable paints 34 main comprise ammonium polyphosphate acid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fireproof structure for a building having a ventilation path provided in a gap between a wall material and an exterior material.

[0002]

BACKGROUND ART As a wall structure of a building, there is a structure in which an outer wall material such as siding is attached to the outside of a wall material such as a wall panel, and a ventilation path is provided in a gap between the wall material and an exterior material. . Usually, the exterior material has a plurality of vertical furring strips on the back side, and the ventilation passage is formed by a gap between adjacent vertical furring strips.

[0003]

For example, when a fire occurs in a neighboring house, the building provided with the ventilation passage may be spread by the ventilation passage.

Therefore, an object of the present invention is to provide a fireproof structure for a building which is effective in preventing the spread of fire.

[0005]

With reference to the drawings, as shown in FIG. 2, the first invention of the present invention is a wall material 17.
And a ventilation path 19 provided in a gap between the exterior material 18 attached to the wall material 17, and the draining material 29 such that one end 31 of the drainage material 29 is inserted into the ventilation path 19. The exterior material
It is the fire prevention structure of the building 11 provided under 18
At least one of the exterior material 18 and the draining material 29 is a high-temperature foaming paint that foams when heated and closes the ventilation path 19.
It is characterized in that 34 is applied.

A fire protection structure for a building according to a second aspect of the present invention is characterized in that, in the first aspect, the high temperature foamable coating material 34 is mainly composed of ammonium polyphosphate.

In the fireproof structure for a building according to the third aspect of the present invention, in the first or second aspect, the exterior material 18 is a face material.
A plurality of vertical furring strips 28 are provided on the back side of 27, and the ventilation passage 19 is formed by a gap between the vertical furring strips 28 adjacent to each other of the exterior material 18.

A fireproof structure for a building according to a fourth aspect of the present invention is the drainage material according to any one of the first to third aspects.
29 has one end portion 31 inserted into the air passage 19 and a bent portion 32 that is continuous with the one end portion 31 and bent through the lower surface side of the exterior material 18, and the high temperature foamable coating material. 34
Is applied to a portion of the bent portion 32 that faces the lower surface of the exterior member 18.

A fireproof structure for a building according to a fifth aspect of the present invention is the drainage material according to any one of the first to fourth aspects.
29 is provided below the exterior material 18 near the foundation 14.

As shown in FIG. 5, in the fireproof structure for a building according to the sixth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the draining material 37 is in the vicinity of the roof 36 of the lower house 12. It is characterized in that it is provided below the exterior material 18.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION A fire protection structure for a building according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the fireproof structure of the building 11 of the present embodiment is provided on a wall 13 of the lower house 12 of the two-story building 11 having the lower house 12.

As shown in FIG. 2, the wall 13 is installed on a foundation 14 via a semi-base 15 and a floor panel 16. The wall 13 is configured by attaching an outer wall material 18 to the outside of a wall panel 17 which is a wall material, and an air passage 19 is provided in a gap between the wall panel 17 and the outer wall material 18. Wall panel 17 and exterior wall material 18
A waterproof sheet 21 is stretched between and. The floor panel
Reference numeral 16 denotes a joist 23 spanned between the beams 22 facing each other, and a face member 24 is stretched on the upper surface of the joist 23. The wall panel 17 is a surface material on the front surface side and the back surface side of a plurality of base materials 25 assembled at predetermined intervals.
26 is installed and configured.

As shown in FIG. 3, the exterior material 18 has a plurality of vertical furring strips 28 mounted at equal intervals on the back side of a siding 27 which is a face material. The exterior material 18 is attached to the wall panel 17 via the vertical furring strips 28.
The air passage 19 is formed by adjoining the vertical furring strips of the exterior material 18.
It is formed by the gap between 28.

In such a wall structure, the draining member 29
However, the one end portion 31 is provided below the exterior material 18 such that the one end portion 31 is inserted into the ventilation path 19. This drainer 29
Is one end portion 31 inserted into the ventilation path 19, a bent portion 32 that is continuous with the one end portion 31 and passes through the lower surface side of the exterior material 18 and is bent at an obtuse angle with respect to the one end portion 31, and the bent portion 32. And one end portion 31 and the other end portion 33 bent in the opposite direction.

Then, the high temperature foamable paint 34 is applied to the bent portion.
It is applied to a portion of the exterior material 18 facing the lower surface of the siding 27 in 32. As shown in FIG. 4, the high-temperature foamable paint 34 is heated and foamed by the flame 20 when the fire spreads from the neighbor's house, and the foam 34A blocks the ventilation passage 19 to perform a fireproof function. is there. This high temperature foamable paint 34
Specifically, is mainly composed of ammonium polyphosphate. As such a high temperature foamable paint 34, for example, Pyrotect (trade name, manufactured by Denbach, Germany)
Can be used.

The fireproof structure of the building 11 of this embodiment can be provided as follows. That is, when the draining member 29 is provided on the lower side of the exterior member 18 so that one end 31 thereof is inserted into the ventilation path 19, the exterior member 18 of the bent portion 32 is formed.
A high temperature foamable coating 34 is applied to a portion of the siding 27 facing the lower surface.

In the construction of the building 11, when the wall structure is constructed, the wall panel 17 is provided on the half base 15 and the floor panel 16 as usual, and then the draining member 29 is provided in front of the half base 15.
One end 31 of is fixed. Next, one end of this draining material 29
After the waterproof sheet 21 is attached to the wall panel 17 so as to cover 31 as well, the exterior material 18 is attached to the wall panel 17.

According to the fireproof structure of the building 11 of the above-described embodiment, as shown in FIG. 4, when the fire spreads from the neighboring house, the high temperature foamable paint 34 applied to the draining material 29 is the flame 20
Then, the foam 34A is heated and is foamed, and the foam 34A can block the ventilation path 19 and fulfill the fire prevention function.

Further, the high temperature foamable paint 34 is added to the draining material 29.
Has been applied and this draining material 29
Since it is sufficient to provide the air passage 19 as usual, the present embodiment can be easily implemented. Further, the high temperature foamable coating material 34 is economical because it can be applied in a strip shape along a portion of the bent portion 32 of the draining member 29 facing the lower surface of the siding 27.

Next, referring to FIG. 5, a fire protection structure for a building according to a second embodiment of the present invention will be described. In the case of the first embodiment, the fireproof structure of the building is the foundation of the wall 13 of the lower house 12.
Although it is provided in the vicinity of the roof 14, in the case of this embodiment, it is provided in the vicinity of the roof 36 of the lower house 12 on the wall 35 on the second floor. That is, also in the wall structure of this embodiment, as in the first embodiment, the draining member 37 has one end 38 inserted into the ventilation passage 19 formed between the wall panel 17 and the outer wall member 18. .

The draining member 37 is bent at a substantially right angle with respect to the one end 38 through one end 38 which is inserted into the ventilation passage 19 and the one end 38 which passes through the lower surface side of the exterior member 18. Part 39
And the other end portion 41 that is bent on the roof 36 of the lower house 12 in a continuous manner with the bent portion 39. Then, the high-temperature foamable coating material 34 is applied to a portion of the bent portion 39 of the draining member 37 that faces the lower surface of the siding 27 of the exterior material 18. Also in this embodiment, the same effect as that of the first embodiment can be obtained.

In the above embodiment, the high temperature foaming paint 34 is applied only to the draining materials 29, 37 side, but it may be applied to only the lower surface of the siding 27 of the exterior material 18 on the contrary. Alternatively, it may be applied to both the draining material 29, 37 side and the siding 27 side, if necessary.

[0023]

According to the fire protection structure for a building according to the present invention,
It is effective in preventing the spread of fire and is easy to implement.

[Brief description of drawings]

FIG. 1 is a perspective view of a building provided with a fireproof structure according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the fire protection structure of the first embodiment.

FIG. 3 is a perspective view of an outer wall material of the first embodiment.

FIG. 4 is a cross-sectional view showing the first embodiment when there is fire spread.

FIG. 5 is a cross-sectional view of a fire protection structure according to a second embodiment.

[Explanation of symbols]

 11 Building 12 Lower house 13 First floor wall 14 Foundation 17 Wall panel that is wall material 18 Exterior wall material 19 Ventilation path 27 Siding that is face material 28 Vertical furring strip 29,37 Drainer 31,38 One end 32,39 Bent part 35 Second floor wall

Claims (6)

[Claims] 1. A ventilation passage provided in a gap between a wall material and an exterior material attached to the wall material, the draining member having one end thereof inserted into the ventilation passage. A fireproof structure for a building provided below the exterior material, wherein at least one of the exterior material and the draining material is coated with a high-temperature foaming paint that foams when heated and closes the air passage. Fire protection structure of the building characterized by being. 2. The fire protection structure for a building according to claim 1, wherein the high-temperature foaming paint has ammonium polyphosphate as a main component. 3. The exterior material has a plurality of vertical furring strips on the back side of a face material, and the ventilation passage is formed by a gap between the vertical furring strips adjacent to each other of the exterior packaging material. The fire protection structure for a building according to claim 1 or 2. 4. The high-temperature foaming material, wherein the draining member has one end portion inserted into the ventilation passage and a bent portion which is continuous with the one end portion and bent through a lower surface side of the exterior material. 4. The conductive paint is applied to a portion of the bent portion that faces the lower surface of the exterior material.
Fire prevention structure of the building described in any of. 5. The fire protection structure for a building according to claim 1, wherein the draining material is provided below the exterior material near the foundation. 6. The fire protection structure for a building according to claim 1, wherein the draining material is provided below the exterior material near the roof of the lower house.