JPH0617630B2 - Building pipe construction method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a piping construction method for a building, and more particularly to a method suitable as a construction method for inserting a pipe for melting a pipe into a concrete skeleton.

<Prior art> Conventionally, in the piping construction in which a pipe for melting a pipe is inserted into a concrete skeleton, at the construction site, a sleeve made of paper is cut into a predetermined size, and the mold is closed with a vinyl tape or the like in a small state. After nailing to the slab surface of the frame, wall surface, etc., concrete is cast around the periphery to form a concrete skeleton, the sleeve is removed to form a through hole for inserting a pipe, and the pipe is inserted into the through hole. After that, concrete or mortar is packed in the gap between the pipe and the concrete frame to close the gap.

<Problems to be Solved by the Invention> According to the above-mentioned piping construction, there is a problem that the work such as cutting out the sleeve and closing the forehead is troublesome and takes time. Also, in the gap between the pipe and the concrete frame,
When stuffing mortar and the like, it is necessary to close one side of the through hole with a veneer plate and the like, and the work of stuffing mortar and the like is also troublesome. Moreover, since the sleeve itself is highly water-absorbent, the strength decreases due to the absorbed water,
When the concrete is poured, the sleeve is deformed and a desired through hole cannot be formed, which causes a problem in inserting the pipe.

<Purpose> The present invention has been made in view of the above problems, and it is possible to easily and surely form a through hole for piping in a concrete skeleton and to quickly form a gap between the pipe and the concrete skeleton. It is an object of the present invention to provide a pipe construction method for a building that can be closed.

<Means for Solving Problems> In order to achieve the above object, the method for constructing a pipe of the present invention includes a hole pad whose outer peripheral side is made of synthetic resin foam, and a predetermined portion of a temporary frame. After fixing to, the concrete is cast around the hole pad, to form a concrete skeleton in which the hole pad is embedded, remove the hole pad from the concrete skeleton, a tapered through hole in the concrete skeleton. After forming, insert a pipe into the through hole, and have a pair of half-divided cylindrical pipe catches made of concrete, having an outer peripheral surface that matches the inner peripheral surface of the through hole, and the pipe. It is characterized in that it is fitted in a gap between it and a concrete frame.

<Examples> Detailed description will be given below with reference to the accompanying drawings.

FIG. 1 is a process diagram showing a pipe construction method of a building of the present invention, showing a pipe construction example for a concrete slab.

First, as shown in FIG. 1A, a hold pad for forming a hole made of a synthetic resin foam is provided on a predetermined portion of the temporary frame (1).
Fix (2). The hole pad (2) is formed in the shape of a truncated cone in the figure (see Fig. 2), and the outer diameter on the small diameter side is set so that it is larger than the outer diameter of the pipe (P) by a predetermined dimension. Has been done. The hole pad (2) has a double structure consisting of an outer layer body (2a) having a recess (2c) inside and an inner layer body (2b) removably fitted in the recess (2c). At least the outer layer (2a) is formed by so-called bead molding so as to form a skin layer on the outer peripheral surface serving as a contact surface with respect to the concrete.

The hole pad (2) having the above-mentioned configuration is provided with a temporary frame at the end on the small diameter side.
It is fixed to the temporary frame (1) while being in contact with the slab surface of (1). The fixing is performed from the recess (2c) of the outer layer body (2a) to the inner layer body (2b).
Can be easily performed by pulling out and driving a nail into the temporary frame (1) through the bottom surface of the recess (2c). Then, after the nailing is completed, the inner layer body (2b) is fitted into the concave portion (2c) of the outer layer body (2a) again to secure the pressure resistance of the hole pad (2). The material of the hole pad (2) is polyethylene foam, polystyrene foam, or a foam made of a resin in which at least a part of a polyolefin resin and a polystyrene resin is graft-bonded [Product name: PIOCELAN: Sekisui Plastics Manufactured by Kogyo Co., Ltd.
Especially, the latter is suitable because the concrete can be easily separated.

Next, concrete is poured around the hole pad (2) and solidified to form a concrete slab (3) in which the hole pad (2) is embedded (see FIG. 1B).
At this time, the pouring height of concrete is the hole pad (2).
The height of the hole pad (2) should not be covered with concrete. Due to the above, in the hole pad (2) buried part of the concrete slab (3), the cavity (3
a) can be formed. Then, the hole pad (2) embedded in the concrete slab (3) is extracted from the concrete slab (3) to form a tapered through hole (4) corresponding to the hole pad (2) (first (See Figure C).
When removing this hole pad (2),
After pulling out b) from the outer layer body (2a), the outer layer body (2a) is pulled out from the concrete slab (3). In this way, if the inner layer body (2b) is pulled out first, the outer layer body (2a) can be stored inward, so that the outer layer body (2a) can be pulled out without difficulty.

Then, insert the pipe (P) into the through hole (4), and
When the (P) is inserted for a predetermined length, a concrete pipe catch (6) is attached to the middle of the pipe (P) (see Fig. 1D), and the pipe catch (6) is attached to the pipe ( P)
At the same time, it is inserted and fitted into the through hole (4) to close the gap (5) generated between the pipe (P) and the concrete slab (3). The pipe catch (6) is, as shown in FIG.
It is composed of a pair of half-divided cylindrical bodies (6a) and (6b), and its outer shape is a frustoconical shape that matches the through hole (4) in the combined state, and has an inner circumference. The surface can enclose the pipe (P). In addition, pipe catch
Before inserting (6), apply concrete bond, caulking agent, mortar, etc. to either or both of the through hole (4) and the pipe catch (6), and
Join (6) and concrete slab (3).

According to the piping construction method of the above configuration, since the hole pad (2) finished in a predetermined shape in advance is used, it is possible to use it as it is without requiring troublesome labor such as closing a small mouth, and the inner layer body. By pulling out (2b), the temporary frame
Can be fastened to (1) quickly. Further, since the hole pad (2) is made of synthetic resin foam, there is no fear of being deformed by moisture, and the uniform through hole (4) can be surely formed. Further, since the skin layer is formed on the surface of the hole pad (2), the concrete slab (3) and the hole pad (2) can be easily separated from each other. Further, the hole pad (2) can serve as a top of the concrete when pouring the concrete.

Also, the gap (5) between the concrete slab (3) and the pipe (P)
Since it is closed by the pipe catch (6), the gap (5) can be closed with one touch, and the gap (5) is closed at the same time as the piping, so that the piping street can be set immediately. be able to. Especially the pipe catch
Since (6) uses a half-split cylinder, the pipe
It can be easily attached to (P).

Furthermore, since a tapered through hole (4) is formed by using a truncated cone-shaped hole pad (2), the hole pad (2) is removed after concrete placement, and the concrete slab (3) is The pipe catch (6) can be easily fitted into the gap (5) with the pipe (P). Further, when the hole pad (2) is pulled out, by pulling out the inner layer body (2b) first, the outer layer body (2a) can be pulled out more easily.

The building pipe construction method of the present invention can be applied to not only the pipe construction for the concrete slab (3) but also the pipe construction for various concrete skeletons. For example, as shown in FIG. When applied to the wall (7), the hole pad (2) is fitted with a pair of temporary frames (1).
(1) Concrete may be placed in a state of being interposed between them, and in this case, in particular, the temporary frames (1), (1) circular separators (8) that regulate the interval between the The hole pad (2) may be fixed to the temporary frame (1) by inserting it into the (2).

The piping construction method of the building of the present invention is not limited to the above-mentioned embodiment, and for example, as the hole pad (2) used, at least the outer layer body (2a) is formed of a synthetic resin foam. Then, for the material of the inner layer body (2b), rubber,
It may be a non-foamed resin or the like, and may be made of a solid body integrally formed of a synthetic resin foam as a whole, and in any case, the hole pad (2) is used for extraction. It is preferable to form finger holes. Further, the inner layer body (2b) of the hole pad (2) may be configured only in a relatively shallow portion of the outer layer body (2a),
In this case, bolting is suitable as a fixing means for the temporary frame (1) (see FIG. 5). In addition, through holes
After completing the insertion of the pipe (P) into the (4), various modifications such as inserting the pipe catch (6) into the through hole (4) afterwards are made without changing the gist of the present invention. You can

<Effects of the Invention> As described above, according to the building piping construction method of the present invention, it is possible to quickly form a tapered through hole with good accuracy by using the hole pad made of the synthetic foam. it can. Also, by the concrete pipe catch having a tapered outer peripheral surface that matches the inner peripheral surface of this through hole,
It is possible to easily close the gap between the pipe and the concrete skeleton, and particularly since the pipe catch is a half-split cylinder, the pipe can be easily attached to the pipe. Therefore, shortening the construction period in piping construction,
There is a unique effect that cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a process diagram showing an embodiment of a piping construction method of the present invention, FIG. 2 is an exploded perspective view of a hole pad, FIG. 3 is a perspective view of a pipe catch, and FIGS. 4 and 5 are FIG. 4 is a cross-sectional view of main parts showing another embodiment. (1) …… Temporary frame, (2) …… Hall pad (2a) …… Outer layer, (2b) …… Inner layer (3) …… Concrete slab (3a) …… Cavity, (4) …… Through hole (5) …… Gap between pipe and concrete frame (6) …… Pipe catch, (7) …… Concrete wall

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-60-109467 (JP, A) Actual development: S58-137742 (JP, U)

Claims (5)

[Claims] 1. A hole pad, at least the outer periphery of which is made of synthetic resin foam, is fixed to a predetermined portion of a temporary frame, and concrete is then cast around the hole pad to embed the hole pad. After forming a concrete skeleton, removing the hole pad from the concrete skeleton, forming a tapered through hole in the concrete skeleton, insert a pipe into the through hole, and on the inner peripheral surface of this through hole Plumbing construction of a building characterized by fitting a pair of half-cylinder-shaped pipe catches made of concrete with matching outer peripheral surfaces into the gap between the pipe and the concrete skeleton Method. 2. The method for constructing piping of a building according to claim 1, wherein a hole pad having a skin layer on a contact surface against concrete is used. 3. The method for constructing piping of a building according to claim 1, wherein an outer layer body having a recess and an inner layer body removably fitted in the recess are used as the hole pads. 4. The method of constructing a pipe for a building according to claim 1, wherein the pipe catch is inserted into a gap between the pipe and the concrete skeleton along with insertion movement of the pipe into the through hole. 5. The method for constructing piping of a building according to claim 1, wherein the hole pads and the pipe catches are frustoconical in shape.