JP6964895B2 - Hiding snowless roof - Google Patents

Description

Detailed description of the invention

The present invention is a snow duct method, which is a typical method in so-called snow-free construction (see Wikipedia) in which snow is naturally treated with snow on the roof in a snowy cold region, and the installation position of the duct is opened. Therefore, it is related to a novel construction method by changing the way of thinking that it is constructed by a culvert type that is concealed and installed under the roofing material.

As a typical snow duct method, the center of the roof called M-shaped roof is configured in a V shape, and a large gutter called snow duct is held in the center of the roof (actual climbing 3155641). , There is an insider snow-melting construction method (Japanese Patent Laid-Open No. 2010-007438) in which a snow duct is installed on the outer shell of the building. It was necessary to remove and clean the roof about once a year.

In recent years, snow duct covers (Japanese Patent Laid-Open No. 2005-325654) and drainage ditch covers (actual registration 3159835) have been devised and are on the market, but all of them have improved in strength, durability, and the cover is blown off by strong winds. not present.

Regarding roofing materials, in the opinion of the authorities, the use of fire-resistant products is originally obligatory in designated fire-prevention areas and semi-fire-prevention areas, but in reality, snow ducts are limited to FRP and flame-retardant production. Since many snow duct covers are made of resin, it has been socially desired to drastically improve the snow-free roof.

In order to prevent fallen leaves, clogging due to dust scattering, and freezing accidents due to freezing, we have drastically reviewed the open-ditch method for snow ducts, and solved these problems with a construction method that can be dealt with purely even in designated fire protection areas. It also aims at the effect of cost reduction.

The method of opening the snow duct was changed to include a galvalume roofing material 1 that covers the entire roof roof, a drop hole 2 formed near the bottom of the water of the roof material 1, and snowmelt water from the drop hole 2. It is equipped with a snow duct 3 for drainage formed at a position where rainwater naturally falls vertically, and by connecting drain pipes 5 near both ends in the longitudinal direction of the snow duct 3 , the open culvert is changed to an underdrain, and the snow duct is further changed. The surrounding area is surrounded by parapets and outer walls to conceal (hiding) the snow duct.

By implementing the above invention, the entire roof will be covered with the roofing material, so that fallen leaves and dust will not fly and accumulate at the opening of the snow duct, the snow duct cover will not be necessary, and snow will not be required. Since the duct is not exposed on the roof, there is no influence of flying fires in the event of a nearby fire, and there are no problems with fire prevention and disaster prevention such as flashover.

The roofing material will cover the entire upper part of the building, and the entire circumference of the snow duct will be surrounded by an outer wall, etc., which will improve the heat retention and prevent freezing accidents due to freezing.
Furthermore, by hiding the snow duct under the roof, it is possible to prevent the snow duct itself from being deteriorated by ultraviolet rays due to irradiation with sunlight, and it is expected that the durability will be improved.

Furthermore, in the case of the conventional open culvert type installation of the snow duct, the width dimension was designed to be very large because snow and snow melt flow into the snow duct at the same time, but the culvert of the present invention was designed. In the case of the method, only snow melting and rainwater flow in, and there is no possibility that the snow soul will be mixed in together. Therefore, the snow duct can be designed to be small in width, and the cost can be significantly reduced.

An embodiment of the present invention (using a galvalume folded plate as a roofing material) will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of a building showing an embodiment of the present invention, in which the entire roof roof is covered with the roofing material 1. A drop hole 2 (regardless of shape) for snowmelt water and rainwater is provided near the lowermost part of the roofing material so that it naturally falls vertically into the snow duct 3. At the bottom of the roofing material under water, a snow bar 4 wrapped with galvanized iron is provided to prevent rainwater from entering the building and to remove the sliding pressure of snow. Since the roofing material of the embodiment is described by a folded plate, in this case, rain shut processing is applied to both water and water. (Not shown)

Drain pipes 5 for drainage are connected to both ends in the longitudinal direction of the snow duct 3, and are connected to the drainage channel and finally discharged to the water channel in the site.
All directions around the snow duct 3 are surrounded by a roof material 1, a parapet 6, an eaves roof 7, a concave outer wall 8, and a convex outer wall 9 to prevent freezing of accumulated water in the snow duct 3. With the above configuration, the snow 10 accumulated on the roofing material 1 becomes flat at the upper part of the building due to the wind and airflow, and as a result, the snow does not easily accumulate, which is the original function of the snow-free roof, and at the same time, the building. It facilitates drainage of melted snow and drainage during rainfall in an environment of inherent body temperature and warm climate.

Although the embodiments of the present invention have been shown above, the present invention is not limited to this, and various modifications can be made without departing from the idea of the invention. For example, although not shown in the drawing, it is easy to suspend the snow duct 3 directly under the roof material 1 by using a hanging metal for a folded plate without mounting the snow duct 3 on a horizontal member such as a beam 11. Can be considered.

Further, in the extremely cold region in the previous embodiment, it is easily conceivable to spray a heat insulating material such as urethane foam on the outer periphery of the snow duct 3 and the space inside the building to apply the heat insulating specifications, and in the snow duct 3 As a secondary preventive measure to prevent flooding, it is possible to lay a PVC sheet or the like hanging from the side of the main building 12 to the upper part of the eaves 7 in an L shape. It is also possible to install it near the parapet 6.

It is a side sectional view of the building which shows one Embodiment of this invention. It is a bird's-eye view seen from diagonally above the building which shows one Embodiment of this invention. It is a top view of the building which shows one Embodiment of this invention. It is a front view of the building which shows one Embodiment of this invention.

1 Roofing material (folded plate made of galvalume steel plate)
2 Drop hole (a hole that allows snowmelt water and rainwater to fall naturally)
3 Snow duct (gutter)
4 Snow return plate 5 Drain pipe 6 Parapet 7 Eaves 8 Concave outer wall 9 Convex outer wall 10 Snow 11 Beam 12 Main building 13 Ceiling 14 Outer wall 15 Overflow drain

Claims (1)

A galvalume roofing material that covers the entire roof roof, a drop hole formed near the bottom of the roof material, and a drainage hole formed at a position where snowmelt water and rainwater naturally fall vertically from the drop hole. A hiding snow-free roof that is equipped with a snow duct and has drain pipes connected to both ends in the longitudinal direction of the snow duct.

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