JPH03260254A - Fire-resistant thermal insulation lightweight roof for building - Google Patents

Abstract

PURPOSE:To obtain a lightweight roof structure excellent in fire resistance and thermal insulation by jointing the thermal insulation member and water-proof sheet of specified thickness to each other, on a metallic roof for covering the lower surface of the metallic sheet of a corrugated cross-sectional area with the thermal insulation member. CONSTITUTION:A roof structure is composed of a roof 1 having a fire-resistant covering member 2, a thermal insulation member 3, and a water-proof sheet 4. The roof 1 is formed by shaping the steel sheet of the thickness of about 0.8 mm having a trapezoidal cross-sectional area, and by providing its lower surface, with the fire-resistant covering member 2 with the main material of the rock wool material of the thickness of about 10 mm. Besides, as the thermal insulation member 3, the rock wool of the thickness of about 50 mm and the density of about 0.3 g/cm<3> is used, and as the water- proof sheet 4, the vinyl chloride of the thickness of about 1 mm is used. After that, on the roof 1, the thermal insulation member 3 is mounted, and they are firmly fitted to each other with jointing pieces 5 and screws 6, and continuously, via reinforcing sheets 7, on the jointing pieces 5, the water-proof sheet 4 is bonded. As a result, the fire-resistant thermal insulation lightweight roof can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION This invention relates to a fireproof, insulated, lightweight roof for buildings.

BACKGROUND OF THE INVENTION In recent years, there has been an increase in the number of insulation structures for the roofs of buildings, so-called external insulation structures in which a heat insulating material is placed on the outside of the roof. The conventional roof insulation structure consists of laying a heat insulating material on a base of concrete plates such as RC boards and ALC boards, and placing a waterproof sheet on top of that, with a concrete board with a large amount of heat storage placed on the indoor side. This stabilizes the indoor temperature, improves livability, and achieves energy savings.In addition, the concrete board structure and the interior indoor structure are protected by insulation material, so the structure and indoor structure are protected. It was highly durable with little damage to the structural parts.

Problems to be Solved by the Invention However, with such conventional heat-insulating structure roofs, the weight of the base made of concrete plates such as RC boards and ALC boards is relatively flat, which creates a burden on the structural design of columns and beams. In addition, there are problems in terms of safety and speed of construction work, as well as problems in terms of safety and the difficulty in transporting materials. The problem was that the construction period was very long because all the construction of the fireproof and insulated roof was done on-site.

The purpose of this invention is to solve the above-mentioned problems of the prior art, and not only has excellent fire resistance and heat insulation properties, but also is extremely lightweight, so that the burden on structural design of columns and beams is small. The cost of constructing buildings is low, and the transportation of materials and construction work can be done safely and quickly.
Another object of the present invention is to provide a fireproof, insulating, lightweight roof for buildings that can shorten the construction period because it can be made into panels in advance at a factory.

Means for Solving the Problems In order to achieve the above object, the present invention provides heat insulation by placing a heat insulating material on a roof plate made of a metal plate having a cross-sectionally corrugated shape and having a fireproof coating layer on the lower surface. The gist is a fire-resistant, insulated, lightweight roof for buildings, in which the insulation material is attached to the roof board using joint pieces and fixings, a waterproof sheet is placed over this insulation material, and the required parts are joined to the joint pieces. .

Here, as the roof plate, a so-called deck plate or keystone plate made of a steel plate formed into a substantially trapezoidal cross section is used. The thickness of the deck plate is, for example, 0.6 to 1.5+av.

As the roof plate, it is of course possible to use a roof plate made of other metal and having a corrugated cross section.

The fireproof coating material constituting the fireproof coating layer on the lower surface of the roof board may be made of, for example, rock wool, pumice, diatomaceous earth, etc., with cement, etc.
One having 15 mo+ is used.

Here, the composition of the rock wool fireproof coating material is, for example, 60 to 75 parts by weight of rock wool and 25 to 4 parts by weight of cement.
0 parts by weight, and 75 to 100 parts by weight of dilution water.

As a compound of pumice fireproof coating material, for example, pumice 60-7
0 parts by weight, 5 to 15 parts by weight of adhesive, 5 to 15 parts by weight of cement, and 10 to 20 parts by weight of dilution water.

For example, the composition of diatomaceous earth fireproof coating material is diatom ±40
~60 parts by weight, 40-60 parts by weight of cement, 1-5 parts by weight of cellulose fiber, and 3-10 parts by weight of binder (polymer chemical).

As the heat insulating material, an inorganic heat insulating material or an organic heat insulating material is used.

Here, the inorganic heat insulating material has a thickness of 15 to 75 cm and a density of 0.
．． 015~0.40g/cm', and thermal conductivity 0
．． 05Kcal/ah"C or less, and for example, rock wool heat insulating material, calcium silicate heat insulating material, water-repellent perlite heat insulating material, etc. are used.

Also, as an organic heat insulating material, the thickness is 20 to 100 m111.
Density 0. 015-0.40g/ca3, and thermal conductivity 0. 05KcallI+h "C or less, and for example, foamed polystyrene, foamed polyurethane, foamed phenol resin, etc. are used.

Further, as the above-mentioned waterproof sheet, for example, flexible polyvinyl chloride, chlorosulfonated polyethylene, ethylene-vinyl acetate copolymer, chlorinated polyethylene, etc. are used.

The thickness of the waterproof sheet is usually 0.8 to 2. It is Omm.

As the joining piece, for example, a metal plate or a plate material such as a synthetic resin-coated steel plate coated with vinyl chloride resin or the like on one or both sides to improve adhesion is used. The shape of the joint piece is a strip, or a circular, square, or elliptical plate shape.

For example, self-tapping screws, blind rivets, or the like are used as fixing devices for attaching the heat insulating material to the roof sheet together with this joint piece.

Epoxy-based, urethane-based, rubber-based adhesives, etc. can be used as the adhesive for joining the waterproof sheet to the joint piece, but especially when the joint surfaces of the waterproof sheet and the joint piece are both made of vinyl chloride resin, Tetrahydrofuran alone,
Alternatively, it is preferable to use a solvent-based adhesive prepared by dissolving a small amount of vinyl chloride resin in tetrahydrofuran, since this produces a highly durable adhesive effect.

Function: The fire-resistant, heat-insulating, lightweight roof is extremely lightweight because it is made of a roof plate or a metal plate having a corrugated cross section and having a fire-resistant coating layer on the lower surface.

A heat insulating material is placed on top of this roof shingle, the heat insulating material is attached to the roof shingle using a joint piece and a fixing device, and a waterproof sheet is placed over this heat insulating material, and the required portions are covered with the above joint piece. It has excellent fire resistance and heat insulation properties.

In addition, since the entire roof is extremely lightweight, the burden on the structural design of columns and beams is small, and the transportation of materials and construction work can be carried out safely and quickly.

Furthermore, fireproof and insulated roofs can be made into panels in advance at the factory, and at that time, the roof panels made of corrugated metal plates are cut into appropriate sizes to create lightweight and stable quality panels. Large integrated panels can be made, which simplifies on-site roof construction, improves construction efficiency, and shortens the construction period.

Example Next, embodiments of the invention will be described based on the drawings.

In the drawings, the fireproof, insulated, lightweight roof according to the present invention has rock wool as the main material on the lower surface of a roof plate (1) made of a steel deck plate with a thickness of 0.81 and formed into a substantially trapezoidal cross section. 10o+m thick fireproof covering material (
2) is provided.

Here, the fireproof covering material (2) is made by applying a rock wool fireproofing material composition consisting of 70 parts by weight of rock wool, 30 parts by weight of cement, and 85 parts by weight of dilution water to a predetermined thickness in advance at a factory and drying it. It was formed.

And a roof plate (1) having this fireproof coating layer (2)
On top of this is an inorganic insulation material (3) made of rock wool insulation material.
is mounted, and the inorganic heat insulating material (3) is attached to the roof board (1) by a required number of joint pieces (5) made of PVC steel plates and self-tapping screws (6).

Furthermore, a waterproof sheet (4) made of soft polyvinyl chloride with a thickness of 1.0 cm is placed on top of this inorganic heat insulating material (3).
The parts corresponding to each joint piece (5) of this are joined to the joint piece (5) with an adhesive via a reinforcing sheet (7) also made of soft polyvinyl chloride.

Here, inorganic insulation material (3) made of rock wool insulation material
is a plate having a thickness of 50 mm, a density of 0.3 g/cffi3, and a thermal conductivity of 0.033 Kcal/mh'C (hard heat insulation plate #150, manufactured by Toyobo Co., Ltd.).

In addition, as the adhesive for bonding the joint piece (5) and the reinforcing sheet (7), and the reinforcing sheet (7) and the waterproof sheet (4), since both of these joint surfaces are made of vinyl chloride resin, A solvent-based adhesive with a small amount of vinyl chloride resin dissolved in tetrahydrofuran was used. This resulted in an adhesive effect with excellent durability.

Although not shown in the drawings, the joining piece (5) was a strip-shaped piece or a circular piece.

The reinforcing sheet (7) had the same shape as the joining piece (5).

In this case, the reinforcing sheet (
Since 7) is covered, there is an advantage that even if a dent occurs in the heat insulating material (3), for example, the head of the self-tapping screw (6) will not easily protrude upward.

The above-mentioned fire-resistant, insulated, lightweight roof can usually be manufactured by converting all of the roof components into panels at a factory, and the panelized fire-resistant, insulated, and lightweight roof can be manufactured using a beam (10) made of one section steel at the top of the building. is installed on top of.

In some cases, all the components other than the waterproof sheet (4) may be made into panels, and only the waterproof sheet (4) may be stretched on-site.

Here, in the case of the former all-panel construction, a waterproof sheet (4
) to match the periphery of the panel, and connect the connecting edges of the waterproof sheets (4) of adjacent panels to each other,
The connection may be made by passing a waterproof sheet or a belt-shaped connecting piece made of PVC steel plate or the like over these and gluing them, or by attaching them to the required connecting edges of the waterproof sheet (4). Form the sheet extensions (paths shown) that protrude outward from the side edges of the panels in advance, and then butt the connection edges of adjacent panels against each other, then connect the waterproof sheet extensions of one panel to the other. It may be placed over the connection edge of the waterproof sheet (4) and joined.

According to the fire-resistant, insulated, lightweight roof, the roof plate (1) is made of a steel deck plate having the fire-resistant coating layer (2) on the lower surface, so it is very lightweight, and the roof plate ( Since the inorganic heat insulating material (3) is placed on top of 1), it has excellent fire resistance and heat insulation properties. And since the entire roof is extremely lightweight, there is less burden on the structural design of columns and beams.

In addition, since the above-mentioned fireproof and insulated roof can be made into panels in advance at a factory, it is possible to ensure safety and speed of work in transporting materials and construction.Therefore, roof construction on site is easy. This can improve construction efficiency and shorten the construction period.

In each of the above embodiments, an inorganic heat insulating material is used as the heat insulating material (3), but it may of course be an organic heat insulating material. Further, in the illustrated embodiment, a reinforcing sheet (7) is placed over the upper surface of each joining piece (5), but the reinforcing sheet (7) may of course be omitted in some cases.

It should be noted that the fire-resistant, insulated, lightweight roof according to the present invention is preferably made into panels in advance at a factory or in order to shorten the construction period. 2) Since it is made of a metal plate with a corrugated cross section, it is extremely lightweight, and the entire roof has excellent fire resistance and heat insulation properties. It may also be manufactured by on-site construction.

Effects of the Invention As mentioned above, the fireproof and insulated lightweight roof for a building according to the present invention is extremely lightweight because the roof plate is made of a metal plate with a corrugated cross section and a fireproof coating layer on the lower surface. A heat insulating material is placed on top of this roof shingle, and is attached to the shingle using a heat insulating material or a joint piece and a fixing device.Furthermore, a waterproof sheet is placed over this heat insulating material, and the required portions are covered with the above joint piece. It has excellent fire resistance and heat insulation properties.

Furthermore, since the entire roof is extremely lightweight, there is less burden on the structural design of columns and beams, resulting in lower building construction costs. Furthermore, it is possible to ensure work safety and speed in the transportation of materials and construction work.

Moreover, the fireproof and insulated roof can be made into panels in advance at the factory, and in this case, the roof panels made of corrugated metal plates are cut into appropriate sizes to create lightweight and stable quality panels. Since large integrated panels can be made, on-site construction is extremely simple, construction efficiency is improved, and the construction period can be sufficiently shortened.

In addition, since roof panels with a fire-resistant coating layer with a large amount of heat storage are placed on the indoor side, the indoor temperature is stabilized, improving livability and achieving energy savings. Since the attached roof plate and the indoor structural part inside the roof plate are protected, there is an advantage that the roof plate and the indoor structural part are less likely to be damaged and have excellent durability.

[Brief explanation of drawings]

The drawings are partial sectional views showing embodiments of the invention. (1) Roof plate made of steel plate with corrugated cross section, (2)
... Fireproof coating layer, (3) ... Heat insulation material, (4) ...
- Waterproof sheet, (5)...joint piece, (6)...tapping screw (fixing tool). Indication of the above case Patent Application No. 57442 of 1990 Name of the invention Person who amends fire-resistive and insulated light roofs for buildings Relationship with the case Patent applicant name of agent (608 completed) Patent attorney Einosuke Kishimoto 6 Increased due to amendment Number of claims 7 Amendment subject Contents of amendment 1. The "rRC board... base" on the last line of page 1 to the first line of page 2 of the specification is an rRC structure (reinforced concrete structure) or ALC board (light; concrete board). ) is corrected. 2. In the same book, p. 2, lines 11-12, ``a base made of an rRC board...'' is corrected to ``a base made of an rRC structure or an ALC board, etc.''. In the list of the above cases, patent application No. 57442 of 1990 is the name of the invention: Fireproof insulation light in buildings! Relationship with the case of the person making the roof amendment Contents of the amendment by the patent applicant's agent

Claims (1)

[Claims] A heat insulating material (3) is placed on a roof plate (1) made of a metal plate with a corrugated cross section and a fireproof coating layer (2) on the lower surface, and the heat insulating material (3) is connected to the joint piece (5). It is attached to the roof board (1) by a fixing device (6), a waterproof sheet (4) is placed over the heat insulating material (3), and the required portions are joined to the joint piece (5). Fireproof insulated lightweight roofs in buildings.