JP2008190284A - Draining system for building, and method of constructing draining system for building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a draining system which can add a new water section facility to an existing building without carrying out construction work on a large scale. <P>SOLUTION: The draining system is formed of a foundation penetration pipe 2 and an auxiliary foundation penetration pipe 3 which is arranged so as to penetrate a foundation 20 similarly to the foundation penetration pipe 2. The auxiliary foundation penetration pipe 3 is inserted in bar arrangement before placement of concrete for the foundation 20, and fixed to the foundation 20 by placing the concrete. When a toilet 35 is additionally constructed, a flexible pipe 32 is inserted into the auxiliary foundation penetration pipe 3, and one end of a joint pipe 4 is connected to an outside end 39 of the flexible pipe 32. On the other hand, the other end of the joint pipe 4 is connected to a catch basin 5 newly set in the vicinity of a closet 61 where the toilet 35 is additionally constructed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a drainage system for discharging drainage from a water facility in a building to the outside, and a construction method for the drainage system.

  In recent years, it is often seen that water facilities are added in a building such as a house in accordance with a change in lifestyle. For example, there are cases where a kitchen is added to live in two households or a toilet is added for nursing care.

  By the way, in many buildings, such as a house, the foundation which consists of concrete etc. is formed on the ground, and a pillar etc. are provided on the foundation. That is, many buildings are provided with a foundation for partitioning the inside and outside of the building.

In general, a water supply header is provided inside the foundation, and each water supply facility in the building is connected to the water supply header via a water supply pipe. Thereby, water is supplied to each water supply facility from the water supply header via the water supply pipe. Therefore, when adding water facilities in an existing building, the water supply can be easily constructed by branching the existing water supply piping inside the foundation or using an empty part of the water supply header. (For example, refer to Patent Document 1).
Japanese Patent Laid-Open No. 11-210031

  On the other hand, regarding drainage, drainage pipes are buried outside the foundation, and each watering facility may be connected to the drainage pipes via drainage pipes. In such a case, it is necessary to construct drainage piping so as to penetrate the foundation. For this reason, when adding water facilities in an existing building, drainage piping had to be increased along with the expansion of water facilities, and part of the foundation had to be demolished. As a result, there has been a problem that the expansion work becomes large and the cost is increased, and the construction period is long. Moreover, there was a possibility that the strength of the building itself may be reduced by demolishing part of the foundation.

  In particular, when installing additional toilets, the toilet pipes are larger in diameter than other miscellaneous drainage pipes, so it is very cumbersome to lay down drainage pipes by tearing part of the foundation. .

  This invention is made | formed in view of this point, The place made into the objective is to provide the drainage system which enables the expansion of watering equipment, without performing a large-scale construction.

  A drainage system for a building according to the present invention is a drainage system that discharges drainage from a water supply facility inside a building having a foundation to the outside of the building, and penetrates the foundation when the foundation is formed. A base through pipe inserted into a drainage pipe connected to the water supply equipment or connected to the water supply equipment, and so as to penetrate the foundation when the foundation is formed. A preliminary foundation penetrating pipe that is disposed, not connected to the water supply facility, and into which the drainage pipe connected to the water supply facility is not inserted.

  In the drainage system, in addition to the basic through pipe connected to the water supply facility, a preliminary basic through pipe is provided so as to pass through the foundation in advance when the foundation is formed. For this reason, when adding water facilities, it is possible to dispose the drainage pipe without destroying the foundation by using the spare foundation through pipe. Therefore, it is not necessary to perform a large-scale construction when adding water facilities, and the labor and cost of the construction can be reduced. In addition, the construction period can be shortened.

  The basic through pipe includes a first basic through pipe for toilet and a second basic through pipe for miscellaneous drainage having an inner diameter smaller than that of the first basic through pipe. The inner diameter of the first basic through pipe may be larger than the inner diameter.

  Sewage is less likely to flow than miscellaneous wastewater. Therefore, in general, the drainage pipe for toilet connected to the toilet preferably has a large inner diameter in order to smoothly flow sewage. However, the larger the inner diameter, the larger the outer diameter. Therefore, in order to increase the number of toilets in the conventional drainage system, the foundation has to be largely destroyed, and there is a risk that the construction will become larger. However, in the drainage system, the preliminary foundation through pipe having an inner diameter equal to or larger than the inner diameter of the first foundation through pipe for toilet is disposed so as to penetrate the foundation when the foundation is formed. Therefore, according to the drainage system, it is possible to add a toilet using a large-diameter standby foundation through pipe without significantly destroying the foundation. Therefore, according to the said drainage system, the above-mentioned effect that drainage piping can be arrange | positioned without demolishing a part of foundation will be exhibited more notably.

  The drainage system further includes an outer lid that closes an opening on the outer side of the preliminary foundation penetrating pipe, and a mark member that extends upward from the outer lid and has an upper end positioned above the ground. Preferably it is.

  This makes it possible to quickly grasp the position of the outer end portion of the preliminary foundation penetrating pipe buried in the ground when adding water facilities. Therefore, according to the drainage system, excavation work can be easily performed during the expansion work. Thereby, the effort and time required for the extension work can be reduced. It is also possible to prevent the preliminary foundation through pipe from being accidentally damaged during excavation.

  It is preferable that the drainage system further includes an inner lid that closes an inner opening of the preliminary foundation through pipe, and a mark provided on an outer surface of the inner lid.

  According to the drainage system, for example, even when the inner end portion of the preliminary foundation through pipe is located below the floor, the position of the inner end portion can be easily found. Therefore, the spare foundation through pipe can be easily used during the expansion work.

  A construction method for a building drainage system according to the present invention includes a first step of forming a foundation and simultaneously arranging a foundation through pipe and a preliminary foundation through pipe so as to penetrate the foundation, and before or after the first step. A second step of installing a drain pipe on the outside of the foundation, a third step of connecting a plumbing facility to the drain pipe using the foundation through pipe, and a plumbing after the third step. And a fourth step of connecting an additional water supply facility to the drainage pipe using the spare basic through pipe when the equipment is added.

  According to the above construction method, the drainage pipes of the additional water facilities can be arranged by simple construction without tearing the foundation. In addition, since the expansion work becomes easy, the construction period can be shortened. Furthermore, since the foundation is not demolished, it is possible to prevent the strength of the building from being reduced due to the expansion work.

  The basic through pipe includes a first basic through pipe for toilet and a second basic through pipe for miscellaneous drainage having an inner diameter smaller than that of the first basic through pipe. The water supply facility that is equal to or larger than the inner diameter of the first basic through pipe and is added in the fourth step may be a toilet.

  As a result, the above-described effects are more remarkably exhibited.

  In the fourth step, a drainage pipe connected to an additional water supply facility is inserted inside the preliminary foundation penetrating pipe, and the foundation is penetrated through the preliminary foundation penetrating pipe. It is preferable that the process of connecting is included.

  According to the above method, drainage piping that penetrates the foundation can be easily realized without having to destroy part of the foundation simply by inserting the drainage piping into the preliminary foundation through-pipe during the construction of the water facility. be able to.

  Moreover, according to the drainage system constructed by the above construction method, the drainage pipe can be easily replaced because the drainage pipe is only inserted inside the preliminary foundation through pipe. Therefore, according to the drainage system, not only expansion work but also maintenance of drainage pipes can be easily performed.

  According to the present invention, when adding water facilities, it becomes possible to lay drainage pipes without demolishing part of the foundation, and it is possible to add water facilities without performing extensive construction work. It becomes possible to provide a drainage system.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<First Embodiment>
<< Configuration of Drainage System 1 in the Present Embodiment >>
FIG. 1 is a plan view showing a configuration of a drainage system 1 according to the present embodiment. First, with reference to FIG. 1, the structure of the drainage system 1 which concerns on this embodiment is demonstrated in detail. In addition, this embodiment demonstrates the drainage system which discharges | emits the waste_water | drain from the water supply equipment in the house 10 to the outdoors as an example of the drainage system which concerns on this invention.

  The drainage system 1 according to the present embodiment includes a foundation through pipe 2, a preliminary foundation through pipe 3, a connecting pipe 4, a drainage trough 5, and a drain pipe 6.

  The basic through pipe 2 includes a first basic through pipe 2a for a toilet having a first inner diameter, and a second basic through pipe 2b for miscellaneous drainage having a second inner diameter smaller than the first inner diameter. It is. In the following description, the first basic through pipe 2a and the second basic through pipe 2b are collectively referred to as a basic through pipe 2. In addition, although the specific numerical value of a 1st internal diameter and a 2nd internal diameter is not specifically limited, In this embodiment, a 1st internal diameter is 75 mm and a 2nd internal diameter is 50 mm. Moreover, the preliminary | foundation basic | foundation penetration pipe 3 may also contain the several penetration pipe | tube which has a different internal diameter.

  The house 10 includes a plurality of rooms partitioned by walls, partition doors, etc. (excluding flooring materials). Further, as shown in FIG. 1 with a part cut away, the foundation 20 is disposed at a position overlapping with a wall, a partition door, or the like in plan view. Here, the term “room” refers to a space surrounded on the side by walls, partition doors, etc. (excluding flooring), and includes a space surrounded by the foundation 20.

  As shown in FIG. 1, a plurality of water facilities such as a kitchen 11, a bath 12, a washing machine 13, a wash basin 14, and a toilet 15 are provided in the house 10. The above-described rooms are roughly classified into a room in which water facilities such as a kitchen 11, a bath 12, a washing machine 13, a wash basin 14, and a toilet 15 are installed, and a room in which water facilities are not installed.

  A basic through pipe 2 is disposed in each chamber in which each of the above-described water facilities is installed. Although the details will be described later, the foundation through pipe 2 penetrates the foundation 20 and spans the inside and outside of the house 10. The inner end portion 26 (see FIG. 2) of the basic through pipe 2 is connected to each watering facility (kitchen 11, bath 12, washing machine 13, wash basin 14, toilet 15) in the house 10.

  One end of the connecting pipe 4 is connected to the outer end 27 (see FIG. 2) of the basic through pipe 2. The other end of each connecting pipe 4 is connected to a drainage sump 5 that collects drainage in the house 10.

  The drainage basins 5 are connected to each other by a drain pipe 6. The terminal end of the drain pipe 6 is connected to a public trough 7 provided near the boundary between the residential land 50 and the public road 51. The public trough 7 is connected to the main sewer 8 buried in the public road 51 through the junction pipe 9.

  On the other hand, the preliminary foundation through pipe 3 is installed in at least one or more of the rooms where no water supply facilities are installed. In this embodiment, the preliminary foundation through pipe 3 is disposed in the rooms 61 and 62 provided in the side of the living room A and the living room B among the rooms in which no water facilities are installed. As will be described later, the preliminary foundation penetrating pipe 3 is also bridged inside and outside the house 10 and penetrates the foundation 20 (see FIG. 2). The connecting pipe 4 is not connected to the outer end portion 37 (see FIG. 3) of the preliminary basic through pipe 3.

  The above is the configuration of the drainage system 1. Next, the basic through pipe 2 will be described in detail with reference to FIG.

<< Details of basic through pipe 2 >>
As described above, the basic through pipe 2 includes the first basic through pipe 2a and the second basic through pipe 2b having different inner diameters. However, the first basic through pipe 2a and the second basic through pipe 2b are common except that the inner diameters are different. So, below, the 1st foundation penetration pipe 2a is explained, and explanation of the 2nd foundation penetration pipe 2b is omitted. The first basic through pipe 2a is simply referred to as the basic through pipe 2.

  FIG. 2 is a cross-sectional view showing a toilet 15 as an example of a watering facility provided in the house 10 and the basic through pipe 2. As shown in FIG. 2, the foundation through pipe 2 is disposed so as to penetrate the foundation 20. In this embodiment, the basic through tube 2 is a so-called sheath tube, and a flexible tube 22 is inserted inside thereof. However, the basic through pipe 2 may itself be a drain pipe.

  The foundation through pipe 2 is disposed together with the foundation 20 when the foundation 20 is formed. Specifically, the foundation through pipe 2 is inserted into the reinforcing bar before the concrete for the foundation 20 is placed, and is fixed to the foundation 20 by placing the concrete. The inner end portion 26 of the basic through pipe 2 extends upward in the house 10. The outer end portion 27 of the basic through pipe 2 is buried in the ground. As a material of the basic through pipe 2, for example, a vinyl chloride resin or the like can be suitably used. However, the material of the basic through pipe 2 is not limited to vinyl chloride resin.

  The flexible tube 22 is formed in a bellows shape and has flexibility. The inner end portion 28 of the flexible tube 22 extends upward from the inner end portion 26 of the basic penetration tube 2. The inner end 28 of the flexible tube 22 is connected to the drain 15 a of the toilet 15. On the other hand, the outer end 29 of the flexible tube 22 is connected to the connecting tube 4 in the vicinity of the outer end 27 of the basic through tube 2. The connecting pipe 4 is connected to the drainage sump 5 as described above.

  In addition, since the structure of the water supply facilities (kitchen 11, the bath 12, the washing machine 13, and the wash-stand 14) other than the toilet 15 and the basic penetration pipe 2 is the same, description is abbreviate | omitted. Next, the preliminary foundation through pipe 3 will be described in detail with reference to FIG.

<< Details of spare basic through pipe 3 >>
As shown in FIG. 3, the preliminary basic through pipe 3 has the same configuration as the basic through pipe 2. The preliminary foundation through pipe 3 shown in FIG. 3 also constitutes a so-called sheath pipe, and a flexible pipe 32 is inserted into the inner side of the water supply facility when it is added. However, it goes without saying that the preliminary foundation through pipe 3 may constitute a drain pipe by itself. In the present embodiment, a plurality of spare basic through pipes 3 are provided. The plurality of preliminary foundation through pipes 3 may include preliminary foundation through pipes 3 having different inner diameters. The preliminary basic through pipe 3 shown in FIG. 3 is a basic through pipe for a toilet, and the inner diameter thereof is equal to or larger than the inner diameter (= first inner diameter) of the first basic through pipe 2a.

  In this embodiment, the preliminary basic through pipe 3 is made of a vinyl chloride resin. However, the material of the preliminary basic through-tube 3 is not particularly limited, and may be a metal, for example.

  The preliminary foundation penetrating pipe 3 is disposed when the foundation 20 is formed, like the foundation penetrating pipe 2. That is, the preliminary foundation penetrating pipe 3 is inserted into the reinforcing bar before the concrete for the foundation 20 is placed, and is fixed to the foundation 20 by placing the concrete. On the other hand, unlike the flexible tube 22 of the basic through-tube 2, the flexible tube 32 is not provided in advance, and is provided in the spare basic through-tube 3 when a watering facility (a toilet in this case) is added. . Therefore, until the water facility is expanded, only the preliminary foundation through pipe 3 is provided, and the flexible pipe 22 is not disposed inside the preliminary foundation through pipe 3.

  The outer end 37 of the preliminary foundation penetrating pipe 3 is buried in the ground. An outer lid 33 that closes the opening 33 a is provided at the outer end 37 of the preliminary basic through-tube 3. Further, an inner lid 34 that closes the opening 34 a is provided at the inner end 36 of the preliminary basic through-tube 3. The outer lid 33 and the inner lid 34 are attached after the preliminary foundation penetrating pipe 3 is fixed in the foundation 20 and the formwork is removed. As a material for the outer lid 33 and the inner lid 34, for example, rubber, plastic, or the like can be suitably used. However, the materials of the outer lid 33 and the inner lid 34 are not limited thereto.

《Drainage system construction method》
Next, the construction method of the drainage system 1 including the extension of water facilities will be described.
-During construction of house 10-
First, construction for constructing the house 10 will be described. At the time of construction of the house 10, the foundation 20 is formed, and at the same time, the foundation penetration pipe 2 and the preliminary foundation penetration pipe 3 are disposed so as to penetrate the foundation 20. Specifically, before the concrete for the foundation 20 is placed, the foundation through pipe 2 and the preliminary foundation through pipe 3 are inserted into the bar arrangement. Then, by placing concrete, the foundation 20 is formed, and at the same time, the foundation through pipe 2 and the preliminary foundation through pipe 3 are fixed to the foundation 20.

  In addition, before or after the foundation 20 is formed, the drain pipe 6 is installed outside the foundation 20.

  After the foundation 20 is formed, the formwork of the foundation 20 is removed. Then, the outer lid 33 is attached to the opening 33 a of the outer end 37 of the preliminary basic through-tube 3. Further, the inner lid 34 is attached to the opening 34 a of the inner end portion 36 of the preliminary basic through-tube 3. The outer lid 33 and the inner lid 34 are respectively attached to the openings 33 a and 34 a at both ends of the spare basic through-tube 3 until the toilet 35 is added.

  On the other hand, using the basic through pipe 2, the water facilities of the kitchen 11, the bath 12, the washing machine 13, the wash basin 14, and the toilet 15 are connected to the drain pipe 6. In the present specification, “connecting to the drain pipe” includes the case of indirectly connecting to the drain pipe 6 via the connecting pipe 4 or the like.

  The above is the construction when the house 10 is constructed. Next, the construction at the time of expansion of water facilities will be described.

-When adding toilet 35-
In the present embodiment, a case will be described in which a toilet 35, which is an example of a watering facility, is added in a closet 61 adjacent to the living room A shown in FIG. That is, a case will be described in which the house 10 is reformed for nursing care and a new toilet 35 is added to the space used as the close-in 61.

  When adding the toilet 35, first, the outside end 37 vicinity of the preliminary | backup foundation penetration pipe 3 is excavated outdoors, and the outer side edge 37 of the preliminary | backup foundation penetration pipe 3 is exposed. And the outer cover 33 attached to the opening part 33a of the outer side edge part 37 of the preliminary | backup fundamental penetration pipe 3 is removed.

  On the other hand, indoors, first, the toilet 35 is installed on the floor member 64 in the close-in 61 (see FIG. 4). Then, a part of the floor member 64 near the drain outlet 35a of the toilet 35 is cut out to form an insertion hole 64a. And the inner cover 34 provided in the opening part 34a of the inner side edge part 36 of the preliminary | backup fundamental penetration pipe 3 is removed (refer FIG. 3). Thereafter, the flexible tube 32 is inserted toward the auxiliary basic through tube 3 from the insertion hole 64a. After the flexible tube 32 is inserted into the preliminary basic through-tube 3 by a predetermined amount, the inner end 38 of the flexible tube 32 is connected to the drain 35 a of the toilet 35.

  Next, the outside end 39 of the flexible tube 32 that has been inserted from the indoor side into the auxiliary foundation through-tube 3 and reaches the vicinity of the outer end 37 of the auxiliary foundation through-tube 3 is tightened by the fixing nut 30 outdoors. Fix the positioning. Then, one end of the connecting tube 4 is connected to the outer end 39 of the flexible tube 32.

  Next, as shown in FIG. 1, a drainage trough 5 is installed in the vicinity of the push-in 61 of the drain pipe 6 buried in the ground. Then, the other end of the connecting pipe 4 is connected to the drain 5. As a result, the outer end 39 of the flexible tube 32 is connected to the drainage pipe 6 through the connecting pipe 4 and the drainage trough 5.

  Through the steps as described above, the toilet 35 is added in the push-in 61, and the toilet 35 is connected to the drain pipe 6 using the spare basic through pipe 3. That is, the additional toilet 35 is connected to the drain pipe 6 via the drain pipe 31 (= flexible pipe 32, connecting pipe 4 and drainage basin 5).

  As described above, the drainage system 1 according to the present embodiment has a foundation in advance in addition to the basic through pipe 2 connected to the water supply facilities (kitchen 11, bath 12, washing machine 13, wash basin 14, toilet 15). 20 is provided with a preliminary basic through-tube 3 disposed so as to penetrate 20. Therefore, according to the drainage system 1, the drainage pipe 31 is disposed without demolishing the foundation 20 by using the spare foundation penetrating pipe 3 when adding a water supply facility (for example, the toilet 35). be able to. As a result, it is possible to add water facilities without performing extensive construction. Therefore, it is possible to reduce the labor and cost of construction when adding water facilities. Moreover, since the expansion work becomes easy, the construction period can be shortened. Furthermore, since the foundation 20 is not demolished, it is possible to prevent the strength of the building from being reduced due to the expansion work.

  Sewage is less likely to flow than miscellaneous wastewater. Therefore, in general, the drainage pipe for toilet connected to the toilet preferably has a large inner diameter in order to smoothly flow sewage. However, the larger the inner diameter, the larger the outer diameter. Therefore, in order to increase the number of toilets in the conventional drainage system, the foundation has to be largely destroyed, and there is a risk that the construction will become larger. However, in the present drainage system 1, the preliminary foundation through pipe 3 having an inner diameter equal to or larger than the inner diameter of the first foundation through pipe 2 a for toilet is disposed so as to penetrate the foundation 20 when the foundation 20 is formed. . Therefore, according to this drainage system 1, it becomes possible to increase the number of toilets 35 using the large-diameter preliminary foundation penetrating pipe 3 without significantly destroying the foundation 20. Therefore, according to the present drainage system 1, the above-described effect that the drainage pipe 31 (= flexible pipe 32, connecting pipe 4, and drainage trough 5) can be disposed without destroying a part of the foundation 20. It will be more prominent.

  In this drainage system 1, the preliminary foundation penetrating pipe 3 becomes a so-called sheath pipe, and a part of the drainage pipe (that is, the flexible pipe 32) of the water supply facility to be added in the future is arranged inside the spare basic penetrating pipe 3. Space for installation is secured. Therefore, the drainage pipe (flexible pipe 32) can be penetrated through the foundation 20 only by inserting the flexible pipe 32 through the preliminary foundation through pipe 3 during the expansion work. Therefore, according to the present drainage system 1, it is possible to easily add a water supply facility.

  In addition, the selection of the flexible tube 32 can be performed not when the foundation 20 is formed but when the water supply facility is added. Here, any tube can be selected as the flexible tube 32 as long as it is a tube having an outer diameter equal to or smaller than the inner diameter of the preliminary basic through-tube 3. For this reason, the degree of freedom in selecting the flexible tube 32 is increased when adding water facilities. Instead of the flexible tube 32, a tube having no flexibility can be used.

  Furthermore, according to the present embodiment, the flexible tube 32 disposed inside the preliminary basic through-tube 3 can be easily replaced. Therefore, according to this drainage system 1, not only expansion work but maintenance of drainage piping 31 (especially flexible pipe 32) can be performed easily.

  The opening of the preliminary foundation through pipe 3 of the drainage system 1 is closed by a lid (outer lid 33, inner lid 34) until an expansion work is performed. Therefore, according to the drainage system 1, it is possible to prevent dirt, dust, and the like from entering the preliminary foundation through pipe 3.

  Further, in the drainage system 1, the preliminary foundation through pipe 3 is disposed in the press-in 61 and 62 adjacent to the living room A. Therefore, the toilet 35 can be added to the close-in 61 and 62 adjacent to the living room A without demolishing the foundation 20. Thus, for example, the toilet 35 can be additionally installed on the immediate side of the bedroom of an elderly person or a cared person without performing a large-scale construction such as enlarging the house 10. Therefore, in such a case, it is possible to reduce a burden when an elderly person or a cared person moves from the bedroom to the toilet 15.

Second Embodiment
In the drainage system 1 according to the second embodiment, the lid (outer lid 33, inner lid 34) of the preliminary foundation through-pipe 3 is subjected to a process for improving the visibility so as to reduce labor during the expansion work. is there. Although detailed description will be given below, the portions other than the outer lid 33 and the inner lid 34 are the same as those in the first embodiment, and thus the description thereof is omitted.

  As shown in FIGS. 5A and 5B, a mark member 41 is attached to the outer lid 33 of the present embodiment. The mark member 41 extends upward from the outer lid 33, and the upper end of the mark member 41 is located above the ground. In FIG. 5, the mark member 41 is integrally formed with the outer lid 33, but may be formed separately. Further, the shape of the mark member 41 is not limited to that shown in FIG.

  As shown in FIGS. 6A and 6B, a reflective tape 40 is attached as a mark on the outer surface of the inner lid 34 of the present embodiment (the surface on the side opposite to the preliminary basic through-tube 3). Yes.

  As described above, in the drainage system 1 according to the present embodiment, the outer lid 33 is attached with the mark member 41 whose upper end is positioned above the ground. Therefore, when adding a water supply facility, it is possible to quickly grasp the position of the outer end 37 of the preliminary foundation penetrating pipe 3 buried in the ground. Therefore, according to the drainage system 1, excavation work can be easily performed during the expansion work. Thereby, the effort and time required for the extension work can be reduced. Further, it is possible to prevent the preliminary foundation through pipe 3 from being accidentally damaged during excavation.

  In the drainage system 1, the reflective tape 40 is attached to the outer surface of the inner lid 34. Therefore, even when the inner end 36 of the preliminary foundation penetrating pipe 3 is located below the floor, for example, by projecting light under the floor with a flashlight or the like, the inner end 36 of the preliminary basic penetrating pipe 3 is projected. It becomes easy to find the position. Therefore, it is possible to easily use the spare basic through pipe 3 at the time of expansion work.

  The shape of the reflective tape 40 is not limited to that of the present embodiment, and may be any shape. Further, instead of attaching the reflective tape 40 to the outer surface of the inner lid 34, for example, another reflective member such as a reflective plate may be attached. Further, instead of attaching the reflective tape 40, a conspicuous color (for example, white, fluorescent color) may be colored on the outer surface of the inner lid 34. Further, the inner lid 34 itself may be formed of a conspicuous color material. The “marker” in the present specification includes a conspicuous shape, a conspicuous color, a light reflecting member, and the like.

<Third Embodiment>
In the first and second embodiments, after the concrete of the foundation 20 is placed, the outer lid 33 is attached after the mold is removed. On the other hand, in the third embodiment, the outer lid 33 is formed in advance so as to be attachable to the preliminary basic through-tube 3.

  As shown in FIG. 7, the outer lid 33 according to the present embodiment has an outer peripheral surface along the inner peripheral surface of the preliminary basic through-tube 3 and is formed in a U-shaped cross section. A mounting handle 42 is attached to the center of the concave surface of the outer lid 33. The outer lid 33 is attached to and detached from the preliminary foundation through pipe 3 by pushing and pulling the handle 42.

  With the configuration as described above, it is possible to install the preliminary foundation through pipe 3 by attaching the outer lid 33 in the preliminary foundation through pipe 3 in advance. Thereby, the trouble of attaching the outer lid 33 after placing concrete can be reduced, and forgetting to attach the outer lid 33 can be prevented.

  Further, also in the outer lid 33 according to the present embodiment, it is possible to attach the mark member 41 as in the second embodiment. Hereinafter, a case where the mark member 41 is attached will be described as a modification of the present embodiment.

  As shown in FIGS. 8A and 8B, the mark member 41 is attached to the outer end portion of the handle 42. The mark member 41 is attached in a direction substantially orthogonal to the handle 42 and extends upward. The upper end of the mark member 41 is located above the ground.

  In FIGS. 8A and 8B, the handle 42 and the mark member 41 are formed separately. However, these may be formed integrally. Further, the outer lid 33, the handle 42, and the mark member 41 may be integrally formed.

  As a material of the handle 42 and the mark member 41, for example, rubber, plastic or the like can be suitably used.

  Also with the drainage system 1 according to the modified example, the position of the outer end 37 of the preliminary foundation penetrating pipe 3 buried in the ground can be quickly grasped when the water facility is added. Therefore, excavation work can be easily performed during the expansion work, and the labor and time required for the expansion work can be reduced. Further, it is possible to prevent the preliminary foundation through pipe 3 from being accidentally damaged during excavation.

  In each of the above-described embodiments, the flexible tube 32 is provided inside the preliminary foundation through tube 3, and the preliminary foundation through tube 3 and the flexible tube 32 form a double tube structure. However, the preliminary foundation penetrating pipe 3 itself may constitute a part of the drainage pipe 31. That is, drainage or the like may be circulated inside the preliminary foundation through pipe 3.

  Further, in each of the above embodiments, the flexible pipe 32 in the preliminary basic through pipe 3 is connected to the drain pipe 6 via the connecting pipe 4 and the drainage trough 5. However, the flexible pipe 32 may be directly connected to the drain pipe 6, or may be connected to the drain pipe 6 only through the drainage drain 5.

  Furthermore, in each said embodiment, the preliminary | backup basic | foundation penetration pipe 3 was arrange | positioned in the press-in 61 and 62 and the living room B. FIG. However, the preliminary foundation through pipe 3 may of course be arranged in a room in which no other watering equipment is installed. Moreover, the number of the preliminary | backup basic | foundation penetration pipes 3 with which the drainage system 1 is provided is not limited to the thing of said each embodiment, One or two may be sufficient and you may provide four or more.

  Moreover, in each said embodiment, the curved pipe curved about 90 degree | times was used as the basic penetration pipe 2 and the preliminary | backup basic penetration pipe 3. FIG. However, the shapes of the basic through pipe 2 and the preliminary basic through pipe 3 are not limited to these. For example, it may be curved approximately 45 degrees or may be curved at other angles. Further, the flexible tubes 22 and 32 are not limited to the bellows.

  Further, in each of the above-described embodiments, the flexible tubes 22 and 32 are directly connected to the drains 15a and 35a of the toilets 15 and 35, respectively. However, the flexible tubes 22 and 32 and the drains 15a and 35a of the toilets 15 and 35 may not be directly connected but may be connected via other piping.

"Definition of terms"
In the present specification, “addition of water facilities” means, for example, a case where water facilities are newly installed after a person becomes resident in a building. In addition, the case where a water supply facility is newly installed after one or more water supply facilities are used is also included in the “addition”. Of course, the case where a water supply facility is newly installed in accordance with the renovation of a building is also included in the “addition” here.

  “Watering equipment” means equipment that requires drainage through drainage pipes.

  The “connection” includes not only a case where the pipes are directly connected to each other, but also a case where the pipes are indirectly connected via other pipes.

  As described above, the present invention is useful for a drainage system that discharges drainage from a water facility in a building to the outside.

It is a 1st floor top view of a house provided with a drainage system concerning this embodiment. It is sectional drawing which shows the relationship between a toilet and a basic penetration pipe. It is a figure which shows the structure of the penetration piping for expansion. It is sectional drawing which shows the relationship between the toilet and the backup basic | foundation penetration pipe which are expanded. (A), (b) is a figure which shows the outer cover which concerns on 2nd Embodiment. (A), (b) is a figure which shows the inner cover which concerns on 2nd Embodiment. It is a figure which shows the outer cover which concerns on 3rd Embodiment. (A), (b) is a figure which shows the outer cover which concerns on a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drainage system 2 Foundation through pipe 3 Preliminary foundation through pipe 4 Connection pipe 5 Draining 6 Drain pipe 10 House (building)
15 Toilet (water facilities)
15a Drain port 20 Foundation 31 Drainage pipe 32 Flexible pipe (drainage pipe)
33 Outer lid 33a Opening 34 Inner lid 34a Opening 35 Toilet (additional water facilities)
35a Drain port 40 Reflective tape (marker)
41 Marking member 42 Handle 61 Push-in

Claims (7)

A drainage system that discharges drainage from water facilities inside a building having a foundation to the outside of the building,
When the foundation is formed, the foundation through pipe is disposed so as to penetrate the foundation, connected to the water facility, or a drainage pipe connected to the water facility,
When the foundation is formed, it is disposed so as to penetrate the foundation, is not connected to the water supply facility, and is not connected to the water supply facility, and the preliminary foundation through pipe is not inserted through the drainage pipe. When,
Building drainage system with. In the building drainage system according to claim 1,
The basic through pipe includes a first basic through pipe for toilets and a second basic through pipe for miscellaneous drainage having an inner diameter smaller than that of the first basic through pipe,
The building drainage system, wherein an inner diameter of the preliminary foundation through pipe is equal to or larger than an inner diameter of the first foundation through pipe. In the building drainage system according to claim 1 or 2,
An outer lid that closes the opening on the outside of the preliminary foundation penetrating pipe;
A mark member extending upward from the outer lid and having an upper end located above the ground;
A further building drainage system. In the building drainage system according to any one of claims 1 to 3,
An inner lid that closes the opening inside the preliminary foundation penetrating pipe;
A mark provided on the outer surface of the inner lid;
A further building drainage system. A method for constructing a building drainage system,
A first step of forming the foundation and the preliminary foundation penetration pipe so as to penetrate the foundation at the same time as forming the foundation;
Before or after the first step, a second step of installing a drain pipe outside the foundation;
A third step of connecting a water supply facility to the drain pipe using the foundation through pipe;
A fourth step of connecting the additional water supply facility to the drainage pipe using the spare basic through pipe after the third step and adding the water supply facility;
Construction method of drainage system of building with In the construction method of the building drainage system according to claim 5,
The basic through pipe includes a first basic through pipe for toilets and a second basic through pipe for miscellaneous drainage having an inner diameter smaller than that of the first basic through pipe,
The internal diameter of the preliminary basic through pipe is equal to or larger than the internal diameter of the first basic through pipe,
The construction method of the building drainage system, wherein the water supply facility added in the fourth step is a toilet. In the construction method of the drainage system of the building of Claim 5 or 6,
In the fourth step, a drainage pipe connected to an additional water supply facility is inserted inside the preliminary foundation through pipe, the foundation is penetrated through the preliminary foundation through pipe, and the drain pipe is inserted. A method of constructing a building drainage system that includes connecting steps.

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