JP3234674B2 - Building drainage structure construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a drainage structure of a building, which can easily construct a drainage structure of the building on a veranda or a roof of the building.

[0002]

2. Description of the Related Art A case in which a recess is formed in a poured concrete on a veranda or a roof of a building will be described with reference to FIGS. 9 and 10 by taking a veranda or a roof having a drain port as an example.

[0003] In the figure, reference numeral 1 denotes a formwork assembled in a container shape according to the shape and size of the concrete 2 to be poured, and is supported in a state where the concrete 2 is filled by a support (not shown). And 3 is a drain pipe.

First, a rod-shaped plug, for example, a rod-shaped plug 4 formed by twisting a newspaper or the like is fitted to the upper end of the drain pipe 3 with its tip protruding appropriately, and concrete 2 does not flow into the drain pipe 3. To do. Next, as shown in FIG. 9, concrete 2 is poured into a pool-like space formed by the mold 1 and dried.

After the concrete 2 is poured and dried, the mold 1 is removed and removed, and the rod-shaped plug 4 is pulled out from the upper end of the drain pipe 3. The cut-off portion is appropriately cut and polished so as to widen the periphery of the concave portion in FIG. As shown, the installation space 5 for the drain was formed.

[0006]

However, the installation space 5 for the drain is formed by cutting and polishing the concrete 2, but at that time, a large amount of dust is generated, which leads to a deterioration of the working environment, and a countermeasure against pollution. This is not preferable, and requires a dedicated tool for the work of cutting and polishing the concrete 2 into a desired shape, and requires proficiency and a large amount of work time, which is uneconomical.

Further, since the construction of the drainage structure of the building is performed after the installation space 5 for the drain is formed in the concrete 2 as described above, it takes much time and effort and is uneconomical. Although mortar is injected and solidified in the gap between the drain installation space 5 and the drain, the shape of the solidified mortar must be corrected, and it is difficult to hold the drain horizontally.

In view of the above circumstances, an object of the present invention is to provide a method for constructing a drainage structure of a building that can simplify the construction of the drainage structure of the building on a veranda or a roof of the building. It is.

[0009]

According to the first aspect of the present invention, a resin mold member having a required shape is fitted into an upper end of a drain pipe projecting and piped into an assembled mold, and then concrete is driven into the mold. After drying, the mold member is removed to form a concave portion, and a funnel-shaped drain having a downwardly directed drain pipe portion at the center and a cylindrical wall coaxial with the drainage pipe portion on the lower surface of the large-diameter portion is provided. The lower end of the cylindrical wall is supported on the bottom surface of the concave portion so that the drain pipe portion and the drain pipe are connected to each other and arranged in the concave portion, and mortar is provided between the inner peripheral surface of the concave portion and the outer peripheral surface of the cylindrical wall. And a method of constructing a drainage structure of a building, wherein a drain is buried and fixed.

[0010] According to the invention of claim 2, a resin mold member of a required shape is fitted into the upper end of a drain pipe projecting and protruding into the assembled mold, then concrete is poured into the mold and dried, and then the mold is removed. A concave portion is formed by removing the concave portion, a cylindrical wall is erected on the bottom surface of the concave portion concentrically with the drainage tube, a funnel-shaped drain having a downward drainage tube portion in the center portion, and a drainage tube portion is formed. The large diameter portion is supported at the upper end of the cylindrical wall through the cylindrical wall, so that the drain pipe portion and the drain pipe are connected and arranged in the concave portion, and the inner peripheral surface of the concave portion and the outer peripheral surface of the cylindrical wall are formed. The present invention relates to a method for constructing a drainage structure of a building, wherein a drain is buried and fixed by injecting mortar therebetween.

[0011]

According to the first and second aspects of the present invention, a cylindrical wall is interposed between a recess formed in solidified concrete without deteriorating the working environment and a drain disposed in the recess. The mortar injected into the concave portion can be retained without flowing out to another place, so that there is no need for post-processing, and the drain can be supported horizontally by the cylindrical wall, which is convenient.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 9 and 10 denote the same components.

Reference numeral 6 in the figure denotes a mold member having a required shape made of a resin such as vinyl chloride or polyethylene, or a foamed resin of a material such as styrofoam which is easily broken (easy to break). That is, as shown in FIG. 2, the mold member 6 is provided with a disk 8 having a larger diameter than the outer diameter of the cylindrical body 7 at the upper end of a cylindrical body 7 having the same inner diameter as the outer diameter of the drain pipe 3. A plurality of (three in the figure) projections 9 are provided at equal intervals in the radial direction on the outer peripheral surface of the disk 8 while being provided in a core shape.

Prior to the description of the method of constructing a drainage structure of a building, a method of forming a concrete recess in a building, which is performed using the mold member 6 having the above-described shape, will be described.

The open end of the cylindrical body 7 of the mold member 6 is fitted into the upper end of a drain pipe 3 that projects into the mold 1 assembled into a container. Next, as shown in FIG. 1, the concrete 2 is poured into the pool-like space assembled on the mold 1 so that the upper surface of the concrete 2 is located below the upper surface of the mold member 6 and dried and solidified. Thereafter, the mold member 6 is removed from the concrete 2 by breaking the shape or the like, and a concave portion 10 having a desired shape is formed in the concrete 2 as shown in FIG. At this time, since the mold member 6 is made of resin, the mold member 6 can be easily removed from the concrete 2 by breaking the shape of the mold member 6 with bare hands without using a special tool.
As shown in FIG. 3, a concave portion 10 having a shape corresponding to the mold member 6 can be easily formed in the concrete 2, and the surface of the mold member 6 is smooth (no irregularities). The surface is also smooth, and there is no need to perform post-processing such as polishing on the surface of the concrete 2, which is convenient. The mold member 6 may be easily peeled (or pulled out) from the concrete 2 by, for example, attaching a release agent or oil paper to the surface where the mold member 6 and the concrete 2 are in contact with each other. The outer diameter of the disk 8 may be increased as the distance from the cylinder 7 increases, and the outer diameter of the cylinder 7 may increase as the distance from the disk 8 increases, so as to facilitate separation.

Next, a case where a drain is installed in the recess 10 formed in the concrete 2 as described above to construct a drainage structure will be described with reference to FIGS.

In the figure, reference numeral 11 denotes a drain made of an aluminum alloy or a resin having a downwardly conical drainage pipe portion 12 at the center. That is, as shown in FIGS. 4 and 5, the drain 11 has a cylindrical wall (which may be a polygonal cylindrical wall) 14 formed on the lower surface of the large-diameter portion 13 connected to the drain pipe 12 so as to be concentric with the drain pipe 12. The outer peripheral surface of the cylindrical wall 14 and the large diameter portion 13 are provided.
(Three in the figure) fixing plates 15 facing downward between the lower surfaces of
Are provided radially at equal intervals, and each fixing plate 1
5 is provided with a fixing rod 16 having both ends protruding in the thickness direction thereof, and a flow dividing wall 17 having a step 18 at its upper end for receiving and fixing the lower end of the upper drain pipe 20.
Are perpendicular to the inner peripheral wall of the drain pipe section 12 (3 in the figure).
) Are provided at equal intervals. 4 and 6, reference numeral 19 denotes a plurality of (three in the figure) projection seats provided on the upper surface of the large-diameter portion 13 of the drain 11, and a drainage inlet 22 is provided on the peripheral surface. Insertion hole 2 for inserting drainage pipe 20 on the upper surface
3 is for fixing the lid 21 provided with the fixing screws 3 with the fixing screws 24, and 25 is an annular gap formed by the inner peripheral surface and the bottom surface of the concave portion 10 formed in the concrete 2 and the outer peripheral surface of the cylindrical wall 14. A mortar which is injected and solidified into the portion, 26 is a rubber packing sheet which is adhered and fixed over the upper surface of the concrete 2 outwardly from a radially intermediate portion of the large diameter portion of the drain 11, and 27 is the packing sheet 26. Is a waterproof sheet that is adhered and fixed from the upper surface of the concrete 2 to the upper surface of the concrete 2.

As shown in FIG. 4, the lower end of the drain pipe 12 is fitted to the upper end of the drain pipe 3 and the lower end of the cylindrical wall 14 is set up on the bottom of the recess 10 of the concrete 2 as shown in FIG. In a state where it is installed and supported,
Next, the mortar 25 is injected into the annular gap formed by the inner peripheral surface and the bottom surface of the concave portion 10 and the outer peripheral surface of the cylindrical wall 14 and solidified. At this time, the outer diameter of the large-diameter portion 13 of the drain 11 is substantially the same as the inner diameter of the
It is difficult to inject the mortar 25 into the recess 10 from between the inner periphery of the
The mortar 25 can be injected by using the passage portion 10a extending on the outer peripheral surface of the mortar 25, so that there is no need to use a dedicated device for injecting the mortar 25 or newly provide an injection passage for the mortar 25. The mortar 25 is formed by the cylindrical wall 14 and the drain pipe 3 and the concrete 2.
No post-processing is required, and the fixing plate 15 and the fixing rod 16 of the drain 11 are buried while the drain 11 is kept horizontal by the cylindrical wall 14. 25 is injected and solidified, so that the drain 11 can be firmly fixed to the concrete 2 in a stable state.

Thereafter, a ring-shaped rubber packing sheet 26 is bonded and fixed from the radially intermediate portion of the large diameter portion 13 of the drain 11 to the outside of the drain 2 over the upper surface of the concrete 2 as shown in FIGS. And packing sheet 2
The waterproof sheet 27 is adhesively fixed and covered over the upper surface of the concrete 6 and the upper surface of the concrete 2. Thereafter, the lid 21 is fixed to the protruding seat 19 of the large diameter portion 13 of the drain 11 by the fixing screw 24. Accordingly, since the packing sheet 26 and the waterproof sheet 27 form a double waterproof structure from the radially intermediate portion of the upper surface of the large diameter portion 13 of the drain 11 to the upper surface of the concrete 2, the permeation of drainage into the mortar 25 and the concrete 2 is prevented. The drain 11 is made of an aluminum alloy or a resin, and corrosion such as rust does not occur on the drain 11. As a result, the service life of the building can be greatly extended.

On the other hand, the drain water flowing from the drain pipe 20 and the drain inlet 22 of the lid 21 is discharged through the drain 11 and the drain pipe 3. At this time, the diverting wall 17 can prevent eddy currents from being generated in the inflowing wastewater, and can smoothly discharge the wastewater.

Although the embodiment of the present invention is an example in which the drain 11 and the cylindrical wall 14 are integrated, the concave 11
May be sequentially arranged.

In this case, a cylindrical wall 14 is provided upright on the bottom surface of the concave portion 10 formed in the concrete 2 so as to be concentric with the drain pipe 3, and then the drain 11 is connected to the drain pipe section 1 as shown in FIG.
2 is passed through the cylindrical wall 14, the lower end of which is fitted into the upper end of the drain pipe 3 and horizontally supported by the upper end of the cylindrical wall 14, and is disposed in the recess 10, and the mortar 25 is injected into the recess 10 and solidified. . Thereafter, the packing sheet 26 and the waterproof sheet 27 are covered in the same manner as in the above embodiment, and the lid 21 is attached to the drain 11.

Therefore, even when the drain 11 and the cylindrical wall 14 are separate bodies, the same operation and effect as the embodiment shown in FIG. 4 can be obtained.

The above-described embodiment of the present invention relates to the case where the inner diameter of the concave portion 10 of the concrete 2 formed by the mold member 6 is substantially equal to the outer diameter of the large diameter portion 13 of the drain 11. As shown in FIG. 8, the inside diameter of the concave portion 10 of the concrete 2 formed by the mold member 6 is changed to the drain 11
May be larger than the outer diameter of the large diameter portion 13. 7 and 8, the same reference numerals as those in FIG. 4 indicate the same components.

In this case, the outer diameter of the disk 8 of the mold member 6 is made larger than the outer diameter of the large-diameter portion 13 of the drain 11, and the inner diameter of the concave portion 10 of the concrete 2 to be formed is increased. And a ring-shaped gap 28 between the periphery of the large diameter portion 13 of the drain 11 and the inner periphery of the concave portion 10 of the concrete 2 as shown in FIGS.
Is formed, and the mortar 25 is injected from the gap 28. Therefore, it is not necessary to provide the protrusion 9 on the disk 8 of the mold member 6, and the surface of the mortar 25 exposed from the gap 28 is horizontal, but the concrete 2 is inclined at the same inclination as the upper surface of the large diameter portion 13 of the drain 11. The mortar 25 is only partially applied so as to be continuously connected to the edge of the concave portion 10 of the concrete 2 to form a continuous inclined surface from the large diameter portion 13 of the drain 11 to the edge of the concave portion 10 of the concrete 2 as shown in FIG. It can be easily formed to facilitate drainage inflow.

Even when the inner diameter of the concave portion 10 of the concrete 2 is larger than the outer diameter of the large diameter portion 13 of the drain 11 as described above, the packing sheet 26 and the waterproof sheet 27 are covered in the same manner as in the embodiment shown in FIG. Cover 21 to drain 11
Therefore, the same operation and effect as those of the embodiment shown in FIG.

The present invention is not limited to the embodiment shown and described. For example, a lid provided with a plurality of drainage holes on the upper surface and a plurality of drainage holes on the peripheral surface in the circumferential direction. Can be applied to the rooftop of a building by using in place of the lid 21. Of course, various changes can be made without departing from the gist of the present invention.

[0028]

As described above, according to the method for constructing a drainage structure of a building according to the present invention, a building is formed by interposing a cylindrical wall between a concave portion formed in concrete and a drain installed in the concave portion. The drainage structure of the mortar can be prevented from flowing out of the mortar, which is economical without the need for post-processing associated with the mortar outflow.In addition, the mortar is poured and solidified to keep the drain horizontal. It is convenient because it can be firmly fixed to concrete while maintaining it.
It has an excellent effect.

Further, in the method for constructing a drainage structure of a building according to the present invention, a concave portion for arranging a drain is fitted with a resin form material at the upper end of a drain pipe, and then concrete is poured into the form and dried to form a mold. Since it is formed by removing the frame material, it is only necessary to simply remove the resin mold member, no special equipment is required, and no post-processing is required, which is convenient.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a method for forming a concrete concave portion of a building according to the present invention.

FIG. 2 is a perspective view of a mold member used in the method for forming a concrete concave portion of a building according to the present invention.

FIG. 3 is a perspective view showing a concave portion formed in concrete by the method for forming a concrete concave portion of a building according to the present invention.

FIG. 4 is a longitudinal sectional view showing a drainage structure according to the method for constructing a drainage structure of a building according to the present invention.

FIG. 5 is a perspective view of a drain used in the method for constructing a drainage structure of a building according to the present invention.

FIG. 6 is a plan view showing a covering state of a packing sheet in FIG. 4;

FIG. 7 is a longitudinal sectional view showing a drainage structure according to another method for constructing a drainage structure of a building according to the present invention.

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a longitudinal sectional view showing that a void is formed above a drain pipe by a conventional method for forming a concrete recess in a building.

FIG. 10 is a longitudinal sectional view of a concrete concave portion showing a state where a post-processing is performed on a void formed as shown in FIG. 9 to obtain a desired shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Formwork 2 Concrete 3 Drain pipe 6 Mold member 7 Cylindrical body 8 Disk 9 Protrusion part 10 Concave part 10a Passage part 11 Drain 12 Drain pipe part 13 Large diameter part 14 Cylindrical wall 15 Fixed plate 16 Fixed rod 17 Dividing wall 20 Drain pipe 25 Mortar 28 Gap

Claims (2)

(57) [Claims] 1. A resin mold member having a required shape is fitted into an upper end of a drain pipe protruding and piped into an assembled mold, then concrete is poured into the mold, and after drying, the mold member is removed to form a concave portion. A funnel-shaped drain having a downwardly directed drain pipe portion in the center and a cylindrical wall concentrically with the drain pipe portion on the lower surface of the large-diameter portion is formed. By placing the drain pipe portion and the drain pipe in a connected state by being supported, the drain pipe portion is disposed in the concave portion, and mortar is injected between the inner peripheral surface of the concave portion and the outer peripheral surface of the cylindrical wall to bury and fix the drain. Characteristic building drainage structure construction method. 2. A resin mold member having a required shape is fitted into an upper end of a drain pipe protruding and piped into an assembled mold, then concrete is poured into the mold and dried, and the mold member is removed to form a concave portion. A cylindrical wall is formed upright on the bottom surface of the concave portion so as to be concentric with the drainage pipe, and a funnel-shaped drain having a downwardly directed drainage pipe part in the center is formed through the drainage pipe part through the cylindrical wall. The drain pipe section and the drain pipe are connected to each other, and the mortar is injected between the inner peripheral surface of the concave section and the outer peripheral surface of the cylindrical wall by connecting the drain pipe section and the drain pipe to each other by supporting the upper portion of the cylindrical wall at the upper end. A method for constructing a drainage structure of a building, comprising burying and fixing a drain.