JP2001220789A - Drain system for housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain system for a housing requiring only a small number of through holes to be formed in the foundation of a building to prevent decrease in strength of the foundation, facilitating maintenance and control such as inspection and cleaning inside drain pipe lines, allowing a significant reduction in cost of earth work such as excavation work, and being effectively usable even in a small housing site. SOLUTION: In the drain system for a housing, a header 8 having a plurality of inflow side sockets 81a and one outflow side socket 82a is disposed under the floor of the building 2, and the outflow side ends of branch drain pipes 51 connected to a variety of drain facilities 21 to 25 installed within the building are connected to the inflow side sockets 81a of the header 8. The downstream end of a main drain pipe 3 connected to the outflow side socket 82a of the header 8 is connected to the inflow side socket 61 of a catch basin 6 buried in the ground outside the outer peripheral foundation 4 of the building 2, and the downstream end of a main drain pipe 3A connected to the outflow side socket 62 of the catch basin 6 is connected to the inflow side connection of a public pit 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a residential drainage system.

[0002]

2. Description of the Related Art Conventionally, in a small apartment house or a private house such as an apartment, a kitchen 25, a toilet 21, a washroom 22, and a washing machine 2 installed in a building 2 as shown in FIG.
3, drainage generated in various drainage facilities such as bathroom 24,
It flows into each drainage basin 6 buried outside the building through each drainage branch pipe 51 connected to each drainage facility,
The drainage system is a drainage system that flows into the public basin 7 through the drainage pipe 3 in the residential land that connects the drainage basins 6, and is drained to the sewage main line buried under the public road via the public basin 7.

In the case of the above-mentioned conventional drainage system, the drainage pipe 3 in the residential land 1 is buried outside the foundation 3 of the building 2, and various types of drainage pipes 3 are provided at the bent part and the junction part of the drainage pipe 3. Drain basins will be installed.
As the drainage basin, for example, one made of polypropylene resin or one made of hard vinyl chloride resin is used.
The rising diameter of these drainage basins is generally about 300 mm for polypropylene resin, and about 150 to 200 mm for hard vinyl chloride resin.

[0004] As described above, in the conventional drainage system, a drainage pipe is buried between the outer edge of the building and the boundary of the residential land along the outer edge of the building. A space is required for installing a drainage basin to which the end of each drainage branch pipe connected to the drainage facility is connected. For this reason, there was a problem that it became difficult to install a drainage basin due to the narrowing of the residential land.

As a drainage system for a house which solves such a problem, Japanese Unexamined Patent Publication No. 10-331221 discloses a drainage branch pipe which is piped under the floor of a building and connected to each drainage facility in the building. And a drain pipe connected to a drainage pipe having an inlet branch pipe port connecting the drain branch pipe to the outside along the outer periphery of the building, wherein the drain branch pipe is directed substantially in the same direction. Connected to the inflow branch of a drainage basin connected to the drainage pipe that is led out of the building and piped into the residential land, and the drainage branch pipe is a vertical branch pipe that is piped under the floor of the building. And a curved branch pipe section connecting the horizontal branch pipe section and the horizontal branch pipe section, which are piped with a gradient with the downstream side facing downward below the floor,
A drainage piping device for a house in which at least each curved branch pipe portion of each drainage pipe is formed by a flexible pipe is disclosed.

[0006]

However, in the case of the drainage piping device disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 10-331221, each of the horizontal branch pipe portions forming the drainage branch pipes connected to each drainage facility. Must be penetrated through the foundation of the building and connected to the inlet of the drainage basin. For this reason,
The foundation of the building has a locally reduced strength, or
There is a problem that it takes time to perform the watertight treatment of the penetrating portion.
In addition, there is a problem that the connection work between the end of each horizontal branch pipe portion and the inflow branch pipe mouth of the drainage basin also requires man-hours.

[0007] An object of the present invention is to reduce the number of through holes formed in the outer peripheral foundation of a building, and as a result, the strength of the foundation of the building does not decrease, and maintenance and maintenance such as inspection and cleaning of drainage pipes are facilitated. It is an object of the present invention to provide a drainage system for a house which can be carried out easily and can greatly reduce earthwork costs such as excavation work.

[0008] Another object of the present invention is to provide a drainage system for a house that can effectively utilize a residential land even in a small residential land.

It is a further object of the present invention to provide a residential drainage system in which the installation route of a catchment basin is determined so that the piping route is clear and prefabricated piping is possible.

[0010]

According to the first aspect of the present invention, a header having a plurality of inflow side connection portions and one outflow side connection portion is disposed under a floor of a building, and each inflow side of the header is arranged. The outflow end of the drain branch pipe connected to the various drainage facilities installed in the building is connected to the connection part, and the downstream end of the drain main pipe connected to the outflow connection part of the header Section is connected to the inflow-side connection of a drainage basin buried in the ground outside the outer foundation of the building, and the downstream end of the main drainage pipe connected to the outflow-side connection of this drainage basin is connected to the public basin. Residential drainage system connected to the inflow side connection.

According to a second aspect of the present invention, in the residential drainage system according to the first aspect, the drainage main pipe connected to the outlet side connection portion of the header is transparent.

According to a third aspect of the present invention, in the residential drainage system according to the first aspect, the header is made of a transparent synthetic resin.

According to a fourth aspect of the present invention, in the residential drainage system according to the first aspect, the header has a cleaning port.

According to a fifth aspect of the present invention, in the residential drainage system according to the first aspect, a downstream end of a drainage main pipe penetrating an outer peripheral foundation of the building and projecting to the outside, and an outer peripheral foundation of the building are provided. The drainage basin buried in the outside ground is connected to the inflow-side connection portion through a pipe joint for a cleaning port.

According to a sixth aspect of the present invention, there is provided a drainage system for a house according to the first aspect, wherein a pipe joint for a cleaning port is connected to a downstream end of a main drainage pipe inside a peripheral foundation of a building. The joint member connected to the outflow-side connection portion of the pipe fitting for the cleaning opening penetrates the outer peripheral foundation of the building and projects outside, and the outflow-side end of the coupling member is connected to the outer periphery of the building. It is connected to the inflow-side connection of a drainage basin buried underground outside the foundation.

According to a seventh aspect of the present invention, in the residential drainage system according to the first aspect, the downstream end of the drainage branch pipe connected to the toilet penetrates the outer peripheral foundation of the building and projects outside. The downstream end of the drainage branch pipe is connected to the drainage main pipe connecting the outflow side connection part of the drainage basin and the inflow side connection part of the public basin. Are connected to the branch-inflow-side connection part.

(Operation) In the residential drainage system according to the first aspect of the present invention, a header having a plurality of inflow side connection portions and one outflow side connection portion is arranged inside the outer peripheral foundation of the building. At each inflow side connection of the header, the outflow side end of the drainage branch pipe connected to various drainage facilities installed in the building is connected, and at the same time, the main drainage pipe connected to the outflow side connection of the header Is connected to the inflow-side connection of a drainage basin buried in the ground outside the outer foundation of the building, and the downstream end of the main drainage pipe connected to the outflow-side connection of this drainage basin is Since it is connected to the inflow side connection part of the public measure, the number of through holes formed in the outer peripheral foundation of the building can be reduced, and the strength of the outer peripheral foundation of the building does not decrease.

Further, since the main drainage pipe is exposed under the floor of the building, the cost of earthwork such as excavation work can be reduced, and the partial repair of the main drainage pipe can be easily performed using, for example, exchange joints. it can. In addition, since only one drainage basin is to be buried in the residential land outside the outer foundation of the building, material costs and construction costs can be reduced.

Further, by connecting the outflow side end of the drainage branch pipe connected to various drainage facilities in the building to each of the inflow side connection portions of the header, a pipe connection with the various drainage facilities can be performed. Therefore, the cost of plumbing work can be reduced.
In addition, by determining the installation location of the header, the piping route becomes clear, and prefabricated piping becomes possible. As a result, the construction difference between the plumbers is also eliminated.

Further, unlike the related art, it is not necessary to bury a main drainage pipe and a large number of drainage basins in the residential land outside the outer peripheral foundation of the building, so that the residential land can be effectively used even in a small residential land.

In the residential drainage system according to the second or third aspect of the present invention, the header is made of a transparent synthetic resin, or the main drainage pipe connected to the outlet connection portion of the header is made of a transparent synthetic resin. Since it is made of resin, an operator can easily and visually inspect the inside of the header or the drain main pipe by allowing an operator to enter under the floor of the building or by using an opening provided on the floor surface.

According to the fourth aspect of the present invention, since the header has a cleaning port, an operator can enter under the floor of the building or use an opening provided on the floor surface. This makes it easy to inspect and clean the header and the drain main pipe through the header cleaning port.

According to a fifth aspect of the present invention, there is provided a drainage system for a house according to the present invention, which is buried in a downstream end of a drainage main pipe which penetrates an outer peripheral foundation of a building and protrudes to the outside, and is buried in the outer ground of the outer peripheral foundation of the building. The drainage basin is connected to the inflow side connection portion of the drainage basin via a pipe joint having a cleaning port, so that maintenance such as cleaning of the main drainage pipe can be easily performed through the cleaning port of the pipe coupling.

According to a sixth aspect of the present invention, there is provided a drainage system for a house, wherein an inflow-side connection portion of a pipe joint having a cleaning port is connected to a downstream end of a drainage main pipe inside an outer peripheral foundation of the building, A joint member connected to the outlet connection portion of the pipe joint penetrates the outer peripheral foundation of the building and projects outside, and the outlet end of the joint member is embedded in the outer ground of the outer peripheral foundation of the building. It is connected to the inflow side connection of the drainage basin, so maintenance of the drainage main pipe etc. is managed through the cleaning port of the fitting connected to the drainage pipe using the opening provided on the floor of the building Can be easily performed.

According to a seventh aspect of the present invention, there is provided a drainage system for a house, wherein a downstream end of a drainage branch pipe connected to a toilet penetrates a peripheral foundation of a building and is projected outside, and the drainage branch pipe of the drainage branch pipe is connected to a toilet. The downstream end is connected to the outlet of the drainage basin and the inflow side connection of the public basin. , Wastewater from the toilet containing waste and the like can be drained by a separate system to a drainage main pipe buried along the outer peripheral foundation in the outer ground of the outer peripheral foundation of the building. For this reason, the drainage characteristics of the drainage flowing into the catchment basin from the drainage facilities other than the toilet through each drainage branch pipe are not affected at all.

[0026]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic explanatory view showing a first embodiment of the residential drainage system of the present invention, FIG. 2 is a transverse sectional view showing a main part of FIG. 1, and FIG. 3 is a longitudinal sectional view showing a main part of FIG. .

In FIG. 1, reference numeral 2 denotes a building built in the residential land 1. The header 8 is placed on the moisture-proof concrete (or embankment) 46 inside the outer peripheral foundation 4 under the floor of the building 2 (see FIG. 3). The header 8 collects and discharges wastewater generated in drainage facilities such as a toilet 21, a washroom 22, a washing machine 23, a bathroom 24, and a kitchen 25 installed in the building 2 in one place. It has a function.

As shown in FIG. 2, the header 8 is made of a hard vinyl chloride resin, and has five 90 ° large-bend Y-joints 8a adhesively connected to each other via a short pipe in the pipe axis direction. At this time, the receiving ports 81a on the branch inflow side of the adjacent 90-degree large bending Y joint 8a are connected so that they face in opposite directions. The diameter of the branch inlet port 81a is Y
The diameter is smaller than the diameter of the receptacles 82a at both ends of the joint 8a. A lid 8 is provided at the receptacle 82a on the upstream side of the header 8.
4 is detachably mounted. The diameter of each of the inlets 81a and 82a on the inflow side and the outflow side of the header 8 is 3
0 to 75 mm and 100 mm. The header 8 is an opaque gray color.

Each receiving port 81a on the branch inflow side of the header 8
In addition, the toilet 21 installed in the building 2, the washroom 2
2. The outflow-side end of each drainage branch pipe 51 connected to drainage facilities such as the washing machine 23, the bathroom 24, and the kitchen 25 is connected. The drain branch pipe 5 connected to the toilet 21
As shown in FIG. 2, 1 is piped through a hole 41a provided in the inner foundation 41. In addition, each drainage branch pipe 5
A part of 1 is formed in a bellows shape or a spiral shape, and is provided with flexibility so that a bent pipe can be formed.

As shown in FIG. 2, a drain branch pipe 51 is connected in an L-shape between the header 8 and the kitchen 25. A bent Y-joint 52 is adhesively connected, and a plug 53 is removably mounted in a receptacle of the Y-joint 52 to serve as a cleaning port. The shape of the plug 53 is such that a smooth flow path is formed in the Y joint 52.

Similarly, the bend portion of the drain branch pipe 51 connecting the header 8 and the bathroom 24 has a large 90 ° bend.
The joint 52 is adhesively connected, and the same plug 53 as described above is detachably mounted in the receptacle of the Y joint 52 to form a cleaning port.

As described above, by providing a cleaning port at the bent portion of both the drain branch pipes 51 connecting between the bathroom 24 and the kitchen 25 and the header 8, the inside of both drain branch pipes 51 is provided through the cleaning ports. Inspection and cleaning can be performed.

A 90-degree large bend Y-joint 52 is provided at the bend.
Instead of connecting the pipes, T
A three-way pipe joint of a U-shape or a Y-shape is connected, a plug is attached to the open end of the branch part of the pipe joint, and the plug is removed to allow inspection and cleaning of each drainage branch pipe 51. You may do so.

Then, the outflow side receiving port 82a of the header 8
The upstream end of the drain main pipe 3 is adhesively connected via a 90-degree bent joint, and the downstream end of the drain main pipe 3 is buried in the ground outside the outer foundation 4 of the building 2. The drainage main pipe 3A is adhesively connected to the outflow side receptacle 62 of the drainage basin 6, and the downstream end of the drainage main pipe 3A is adhesively connected to the inflow side receptacle of the public basin 7, Through this public basin 7, each drainage system 21 in the building 2
The wastewater generated in the steps 25 to 25 is drained to a sewer main pipe (not shown). The drain main pipes 3 and 3A are both made of opaque hard vinyl chloride resin having a diameter of 100 mm and colored gray.

The downstream end of the drain main pipe 3 that projects outside through the hole 4a of the outer peripheral foundation 4 and the inflow-side receiving port 6 of the drainage basin 6 embedded in the outer foundation 4 of the outer peripheral foundation 4 of the building 2.
As shown in FIG. 4, a 90 degree large bend Y joint 3
4, are connected via a short pipe 35 and a 90-degree elbow joint 36. Upper end receptacle 34 of 90 degree large bend Y joint 34
A plug body 342 is removably mounted in 1.

The 90-degree large bend Y joint 34 exposed on the ground surface is covered and protected by a pipe cover 34a.
One end of the drainage pipe 3A is connected to the outlet port 62 of the drainage basin 6, and the other end of the drainage pipe 3A is connected to the inflow side connection part of the public basin 7. A lower end of a short pipe 64 is connected to an upper end receiving port 63 of the drainage basin 6, and a lid 65 for a cleaning port is detachably attached to the upper end of the short pipe 64.

In this way, an operator enters under the floor, or an opening (not shown) provided on the floor surface.
The inspection and cleaning of the inside of the drain main pipe 3 can be performed by utilizing.

In the embodiment of FIG. 2, an opaque hard vinyl chloride resin pipe colored gray is used as the drain main pipe 3, but a transparent hard vinyl chloride resin pipe may be used, for example. By making the drain main pipe 3 transparent, it is possible to visually inspect the inside of the drain pipe from the outside, and the inspection work of the drain pipe can be easily performed with good workability. The cross-sectional shape of the drain main pipe 3 is not limited to a circle, but may be an oval.

Similarly, by making the header 8 made of a transparent synthetic resin, the inside of the header 8 can be visually inspected from the outside, and the inside of the header 8 can be visually inspected through the cleaning port at the end of the header 8. Can clean.

At this time, the drain branch pipes 51 connected to drain facilities such as the toilet 21, the washroom 22, the washing machine 23, the bathroom 24, and the kitchen 25 may also be made of a transparent hard vinyl chloride resin pipe. The drain main pipe 3 and each drain branch pipe 51 may be opaque, and the header 8 may be transparent. Each drainage branch pipe 51 may be a flexible pipe such as a bellows pipe or a spiral pipe having a smooth inner surface.

In the embodiment shown in FIG. 2, the 90-degree large-bend Y-joint 34 having a cleaning port is connected to the outer peripheral foundation 4 of the building 2.
The pipe was exposed and connected to the outside, but as shown in FIG.
Is formed in a part of the outer peripheral foundation 4 of the building 2 by using the concave part 461 to make a 90-degree large bend Y joint 34.
May be connected to the inside of the pipe. In FIG. 5, the same members as those in FIG. 4 are denoted by the same reference numerals.

Further, in the embodiment of FIG.
Although the header 8 is configured by connecting the 0-degree large-bend Y joint 8a in the pipe axis direction, as shown in FIGS. 6A to 6C, the header itself may be integrated. At this time, the header may be made of synthetic resin or metal.

The header 8A shown in FIG. 6A is provided on the upper side wall of the cylindrical header body 81 at a predetermined interval.
Of the header body 81
Is closed with a lid 83 to provide a cleaning port, and the other end serves as an outlet port 82a on the outflow side.

The header 8B shown in FIG. 6B has five circular portions corresponding to the inflow side connection portions 81a on the side of the header body 81 instead of providing a cleaning port at one end of the header body 81. Openings are formed and each opening is closed with a lid 83 to form a cleaning port.

Further, in the header 8C of FIG. 6C, instead of forming five circular openings on the side of the header body 81, one horizontal rectangular opening is formed, and this opening is formed in a horizontal direction. The opening is closed by a rectangular lid 83 to provide a cleaning port. The connecting portions 81a on the inflow side may be provided in the same direction, or may be provided in different directions.

For example, in the case of a header 8A of the type shown in FIG. 6A, as a method of supporting the header 8A, as shown in FIG. 7, the header 8A is supported by a metal receiving plate 42 fixed to the inner surface of the outer peripheral foundation 4. Then, it may be fixed by a plurality of tightening bands 43. In FIG. 7, reference numeral 44 denotes a floor panel surface material, 45 denotes a joist, and 46 denotes moisture-proof concrete or embankment.

As shown in FIG. 8, a joist 45 existing on the back side of the floor panel 44 is used.
The header 8 </ b> A may be fixed to the lower surface of the device with a fastening band 43. Further, as shown in FIG. 9, a header 8 </ b> A may be supported and fixed on the surface of the concrete 46 by a fastening band 43 by using a moisture-proof concrete 46 formed inside the outer peripheral foundation 4.

FIG. 10 is an enlarged explanatory view showing a main part of a second embodiment of the residential drainage system according to the present invention. In this second embodiment, as shown in the figure, the downstream end of the drain branch pipe 51 connected to the toilet 21 penetrates the outer peripheral foundation 4 on the long side of the building 2 and projects outside. A 90-degree merging type drainage basin in which the downstream end of the drainage branch pipe 51 is connected in the middle of a drainage main pipe 3A that connects between the outflow side receiving port 62 of the drainage basin 6 and the inflow side connection part of the public basin. Since it is the same as the first embodiment except that it is connected to the receiving port 63A on the branch inflow side of 6A, the same parts are denoted by the same reference numerals and description thereof is omitted.

In the case of the second embodiment, the downstream end of the drainage branch pipe 51 connected to the toilet 21 is placed in the middle of the drainage main pipe 3A connecting the drainage tub 6 and the public tub 7. Since it is connected to the receiving port 63A on the branch inflow side of the drainage basin 6A connected to the pipe, the sewage of the toilet including the filth is drained to the drainage main pipe 3A by a separate system. The drainage characteristics of the drainage from each of the drainage devices 22 to 25 other than the toilet 21 that flows in are not affected at all.

In the embodiment shown in FIG. 2, the drain main pipe 3, the header 8, the drain branch 51 and the like constituting the drain pipe are made of hard vinyl chloride resin, but may be made of polyethylene resin. Good. At this time, a rubber ring method, a fusion method, a welding method, or the like may be adopted as a connection method.

[0051]

According to the first aspect of the present invention, in the residential drainage system, a header having a plurality of inflow-side connection portions and one outflow-side connection portion is disposed inside the outer peripheral foundation of the building,
At each inflow-side connection of this header, the outflow-side end of the drainage branch pipe connected to various drainage facilities installed in the building is connected, and at the same time, the drainage connected to the outflow-side connection of the header The downstream end of the main pipe is connected to the inflow-side connection of a drainage basin buried in the ground outside the outer foundation of the building, and the downstream end of the drainage main pipe connected to the outflow-side connection of this drainage basin Is connected to the inflow side connection of the public basin, so there are few through holes to be formed in the outer peripheral foundation of the building,
There is no reduction in the strength of the outer foundation of the building.

Further, since the drain main pipe is laid under the floor of the building along the inside of the peripheral foundation of the building, earthwork costs such as excavation work can be reduced. Since the drainage main pipe is exposed under the floor of the building, partial repair of the drainage main pipe can be easily performed using, for example, an exchange joint. In addition, since only one drainage basin is to be buried in the residential land outside the outer foundation of the building, material costs and construction costs can be reduced.

Further, by connecting the outflow end of the drain branch pipe connected to the various drainage facilities in the building to the respective inflow side connection parts of the header, the pipe connection with the various drainage facilities can be performed. Therefore, the cost of plumbing work can be reduced.
In addition, by determining the installation location of the header, the piping route becomes clear, and prefabricated piping becomes possible. As a result, the construction difference between the plumbers is also eliminated.

Further, unlike the related art, there is no need to bury a drainage main pipe and a large number of drainage basins in the residential land outside the outer foundation of the building, so that the residential land can be effectively used even in a small residential land.

In the residential drainage system according to the second or third aspect of the present invention, the header is made of a transparent synthetic resin, or the drainage main pipe connected to the outlet side connection portion of the header is made of a transparent synthetic resin. Since it is made of resin, an operator can easily and visually inspect the inside of the drain main pipe by entering an operator under the floor of the building or by using an opening provided on the floor surface.

According to the fourth aspect of the present invention, since the header has a cleaning port, an operator can enter under the floor of the building or use an opening provided on the floor surface. This makes it possible to easily inspect and clean the inside of the drain main pipe through the cleaning opening of the header.

According to a fifth aspect of the present invention, there is provided a drainage system for a house according to the present invention, which is buried in a downstream end portion of a drainage main pipe which penetrates a peripheral foundation of a building and protrudes to the outside, and is buried in a ground outside the peripheral foundation of the building. The connection between the drainage basin and the inlet side of the drainage basin is connected via a pipe joint having a cleaning port, so that maintenance such as cleaning of the main drainage pipe can be easily performed through the cleaning port of the pipe coupling. it can.

According to a sixth aspect of the present invention, the inflow side connection portion of the pipe joint having a cleaning port is connected to the downstream end of the main drainage pipe inside the outer peripheral foundation of the building, A joint member connected to the outlet side connection portion of the pipe joint penetrates the outer peripheral foundation of the building and projects outside, and the outflow end of the joint member is embedded in the ground outside the outer peripheral foundation of the building. Because it is connected to the inflow side connection of the basin, it is easy to maintain and manage the inside of the drain main pipe through the cleaning port of the fitting connected to the drain main pipe using the opening provided on the floor of the building Can be done.

In the drainage system for a house according to the present invention, the downstream end of the drainage branch pipe connected to the toilet penetrates the outer peripheral foundation of the building and protrudes to the outside. The downstream end is connected to the branch inflow side connection part of the merged type drainage basin connected to the middle of the drainage main pipe connecting the outflow side connection part of the drainage basin and the inflow side connection part of the public basin. Because of the connection, sewage from the toilet containing filth and the like can be drained by a separate system to a drainage main pipe buried along the outer peripheral foundation in the outer ground of the outer peripheral foundation of the building.
For this reason, the drainage characteristics of the drainage flowing into the catchment basin from the drainage facilities other than the toilet through each drainage branch pipe are not affected at all.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view showing a first embodiment of the present invention.

FIG. 2 is a transverse sectional view showing a main part of FIG.

FIG. 3 is a longitudinal sectional view showing a main part of FIG. 2;

FIG. 4 is an enlarged explanatory view showing a main part of FIG. 2;

FIG. 5 is an enlarged explanatory view showing a modification of FIG. 4;

FIG. 6 is a front view showing a modification of the header.

FIG. 7 is an explanatory diagram showing a method of supporting a header.

FIG. 8 is an explanatory diagram showing a modification of FIG. 7;

FIG. 9 is an explanatory diagram showing another modification of FIG. 7;

FIG. 10 is a cross sectional view showing a main part of a second embodiment of the present invention.

FIG. 11 is a schematic explanatory view showing a conventional residential drainage system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Residential land 2 Building 21 Toilet 22 Washroom 23 Washing machine 24 Bathroom 25 Kitchen 3, 3A Drain main pipe 4 Peripheral foundation 4a, 41a Hole 41 Inner foundation 45 Joist 46 Moisture-proof concrete 51 Drain branch pipe 52 90 degree large bend Y joint 53 Plug 6 Drainage basin 61 Inlet side receiving port 7 Public basin 8 Header 82 Inlet side receiving port 83 Outlet side receiving port

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D061 AA05 AB07 AC07 AD06 2D063 BA02 BA14 3H019 BA43 BD05

Claims (7)

[Claims] 1. A header having a plurality of inflow-side connection portions and one outflow-side connection portion is disposed under a floor of a building, and each inflow-side connection portion of the header is provided with various drainage installed in the building. The outlet end of the drain branch pipe connected to the equipment is connected, and the downstream end of the drain main pipe connected to the outlet connection of the header is buried in the ground outside the outer foundation of the building. The downstream end of the main drainage pipe connected to the inflow side connection part of the drainage basin is connected to the inflow side connection part of the public basin. Residential drainage system. 2. The residential drainage system according to claim 1, wherein the drainage main pipe connected to the outlet side connection portion of the header is made of a transparent synthetic resin. 3. The residential drainage system according to claim 1, wherein the header is made of a transparent synthetic resin. 4. The residential drainage system according to claim 1, wherein the header has a cleaning port. 5. A connection between a downstream end of a drainage main pipe projecting outside through a peripheral foundation of a building and an inflow side connection part of a drainage basin buried in the ground outside the peripheral foundation of the building. The residential drainage system according to claim 1, wherein the drainage system is connected via a fitting for a cleaning port. 6. An inflow side connection portion of a pipe joint for a cleaning port is connected to a downstream end of a drain main pipe inside an outer peripheral foundation of a building, and is connected to an outflow side connection portion of the pipe coupling for a cleaning port. The connected joint member penetrates the outer peripheral foundation of the building and projects outside, and the outflow side end of the joint member is connected to the inflow side connection part of the drainage basin buried in the outer ground of the outer peripheral foundation of the building. The residential drainage system according to claim 1, wherein the drainage system is connected. 7. A downstream end of a drain branch pipe connected to a toilet penetrates the outer peripheral foundation of the building and projects outside, and a downstream end of the drain branch pipe is connected to an outlet connection of a drainage basin. 2. The housing according to claim 1, which is connected to a branch inflow side connection part of a junction type drainage basin which is connected to a middle part of a drainage main pipe connecting the part and an inflow side connection part of the public basin. Drainage system.