JPH11217860A - Drainage facility of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a construction period by communicating the cavity part of the venting pipe of a drainage facility laid on a building and the cavity part of the hollow column of the building with each other, and using the hollow column as a vertical venting pipe. SOLUTION: A vertical steel pipe-made drainage pipe 15 is vertically laid in the piping space of a building. A polyvinyl chloride-made drainage lateral support pipe 13 laid on each story inside a building is connected to the halfway part of the vertical drainage pipe 15. A beam 32 is connected through column and beam structure in each story to a steel frame box column 31 an square hollow column built as the building frame support of the building. A hole is provided on a side part opposed to the vertical drainage pipe 15 of the steel frame box column 31, a venting support pipe 17 is welded to the circumference of the hole, and the cavity part of the vertical drainage pipe 15 communicates with the cavity part of the venting support pipe 17. Furthermore, an outdoor communicating pipe 35 communicating with the cavity part 33 and the outdoor is provided on the top terminal of the steel frame box column 31. Thereby since piping working is reduced, a construction period can be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage system laid in a building having a hollow column, and more particularly to a structure of a ventilation pipe thereof.

[0002]

2. Description of the Related Art In general, the pressure in a drain pipe laid in a building tends to fluctuate greatly due to the influence of drain water flowing through the pipe, thereby impeding a smooth flow of drain water.
There is a possibility that the water sealing trap may be broken due to excessive pressure fluctuation. Therefore, in order to suppress the pressure fluctuation in the drain pipe,
The drainage system is provided with vent pipes along with drain pipes.
When the pressure inside the drainage pipe is negative, air is supplied into the drainage pipe through this ventilation pipe. Conversely, when the pressure inside the drainage pipe is positive, the air inside the drainage pipe is released to the atmosphere by this ventilation pipe. .

FIG. 1 shows an example of a drainage system laid in a building having a hierarchical structure. An appliance drain pipe 11 is directly connected to appliances such as a kitchen, a washroom, and a bath, and one end of the appliance drain tube 11 is connected to a drain horizontal branch pipe 13 provided along a floor slab of each level. Further, the drainage lateral branch pipe 13 is connected to a vertically disposed drainage stack 15 that penetrates through floor slabs of each floor in a predetermined piping space in the building, and the lower end of the drainage stack 15 is connected to an outdoor sewer. Extend.

On the other hand, a ventilation branch pipe 17 is connected to each part of the appliance drainage pipe 11 and the drainage horizontal branch pipe 13 at each level, and is connected to a vertical ventilation pipe 19 laid vertically together with the drainage stack 15 in the piping space. ing.

[0005]

In recent years, a hollow column made of a square or circular steel pipe having a cavity therein has been used in recent buildings because it has a high rigidity and is advantageous in terms of aesthetics. Are increasing.

However, even in a building having a hollow column having such a hollow portion, the above-described ventilation standpipe must be separately arranged as a drainage device, and the cross-sectional shape of the hollow column and the piping space require the same. There is a problem that the effective area of the building is restricted.

[0007] The present invention aims to shorten the construction period and cost of the entire building by reducing the drainage work, especially the piping work of the ventilation stack, in a building using hollow columns, and to increase the effective area of the building. An object of the present invention is to provide a drainage system for a building that can be planned.

[0008]

In order to achieve this object, a drainage system for a building according to the present invention is laid in a building having a hollow column made of a square or circular steel pipe. The hollow portion of the ventilation pipe of the drainage facility to be communicated communicates with the hollow portion of the hollow column, and the hollow column is used as a ventilation standpipe of the drainage facility (Claim 1).

In this case, it is preferable that the other end of the outdoor ventilation pipe having one end open to the outside communicates with the hollow column (claim 2), and that the outdoor ventilation pipe is provided at the top of the hollow column. (Claim 3).

Further, a cap for preventing rainwater from entering is provided at the opening of the outdoor ventilation pipe.

[0011]

FIG. 2 is a longitudinal sectional view illustrating an embodiment in which a drainage system according to the present invention is applied to a building having a hierarchical structure. Reference numeral 15 denotes a steel drainage stack 15 vertically laid in a piping space (not shown) provided at an appropriate place in the building. In the middle of the drain stack 15, a drainage lateral branch pipe 1 made of vinyl chloride laid on each level in the building.
3 are connected. Drainage generated in appliances such as a lavatory, a bathroom, and a toilet at each level in the building passes through a drainage pipe (not shown) made of vinyl chloride or metal extending from each of the above-described appliances, and a drainage lateral pipe 13. , And further flows down in the drain stack 15 to be discharged to the outdoor sewer.

Numeral 31 denotes a steel box column as a rectangular hollow column built as a main column of the building body of the building, and a hollow portion 33 penetrating in the vertical direction is formed in the inside thereof. In each story, the steel box column 31 is joined to the beam 32 via an appropriate pillar-beam joint structure, penetrates the floor slab S of each story, and the top end is buried in the roof slab T.

In each story, a hole is formed in the side of the steel box column 31 facing the drainage stack 15 and a ventilation branch pipe 17 is fillet welded around the hole.
A ventilation branch pipe 17 is connected to an appropriate position of the drain stack 15 via a Y-shaped joint. The hollow portion of the drainage stack 15 and the hollow portion 33 of the ventilation branch pipe 17 communicate with each other, and the steel box column 31 functions as a ventilation stack in a conventional drainage facility.

At the top end of the steel box column, a cavity 33 is provided.
And an outdoor ventilation pipe 35 that communicates with the outside.
The outdoor ventilation pipe 35 functions as an air opening provided at the top of the ventilation pipe in a conventional drainage facility. Further, a waterproof joint 37 for vent pipe connection is attached to the top of the outdoor vent pipe 35 as a cap for preventing rainwater from entering.

[0015]

According to the present invention, in a building having a hollow column in which a vertically continuous hollow portion is formed, a ventilation branch pipe of a drainage facility laid in various parts of the building communicates with the hollow portion in the hollow. Since the pillar is used as the ventilation stack, the piping work of the ventilation stack can be reduced, and the construction period and cost of the entire building can be reduced. Further, since the piping space required for the ventilation stack is not required, the effective area of the building can be increased.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view for explaining a conventional drainage facility in a building having a hierarchical structure.

FIG. 2 is a longitudinal sectional view illustrating an embodiment in which drainage equipment according to the present invention is laid in a building having a hierarchical structure.

[Explanation of symbols]

 13 Horizontal drainage pipe 15 Drainage stack 17 Ventilation pipe 31 Steel box column 33 Cavity

Claims (4)

[Claims] In a building having a hollow column made of a square or circular steel pipe, a cavity of a ventilation pipe of a drainage facility laid in the building communicates with a cavity of the hollow column.
A drainage system for a building, wherein the hollow column is used as a ventilation stack. 2. The drainage system for a building according to claim 1, wherein the other end of the outdoor ventilation pipe having one end open to the outside communicates with the hollow column. 3. The drainage system for a building according to claim 2, wherein the outdoor ventilation pipe is provided at a top of the hollow column. 4. The drainage system for a building according to claim 2, wherein a cap for preventing rainwater from entering is provided at an opening of the outdoor ventilation pipe.