JP2005048520A - Lid for slab hole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily reusable lid for a slab hole, which can be simply attached to/detached from the slab hole, because the attachment and detachment of the lid or a water sealing implement for closing the slab hole against intrusion of rainwater etc. are conventionally troublesome. <P>SOLUTION: This lid for the slab hole is equipped with an annular sealing member 22 which is installed on a top surface of a concrete slab in the state of surrounding a periphery of an opening of the slab hole 10 on the side of the top surface of the concrete slab C, and a lid member 21 for closing an upper part of the slab hole in the state of being placed on the sealing member so that the sealing member can be brought into close contact with the top surface of the concrete slab. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention constructs a hole (hereinafter referred to as a “slab hole”) provided through a concrete slab that divides each floor in order to mainly pipe a drainage stack in a high-rise building such as an apartment house or a high-rise apartment. The present invention relates to a lid that is temporarily closed at an intermediate stage.

In high-rise buildings, drainage stacks are routed up and down through the concrete slabs on each floor, so the concrete slabs on each floor are provided with slab holes for inserting drainage stacks and drainage pipe joints. The slab hole is provided at the time of building the slab at the building construction stage.
In addition to the drain pipe, a water supply pipe or a tube for inserting an air-conditioning duct or an electric wiring, for example, may be routed vertically through each floor. In this case, the duct or tube is inserted. In some cases, a slab hole is provided through the concrete slab at an appropriate position.
For such purposes, it is not uncommon for slab holes provided in advance when placing concrete slabs to be left in a rainy state until a drainage stack or a drainage pipe joint is piped. For this reason, rainwater, etc. that has fallen into the building may flow into the lower floor through the slab hole. As a result, the lower floor may become flooded, hindering subsequent work, and materials that have been carried into the lower floor. In addition, there was a problem that equipment or fixtures installed on the lower floor were not used because of water immersion.
Conventionally, in order to solve this problem, a lid or a water stop for closing a slab hole has been provided.
Japanese Patent Laid-Open No. 11-182036

However, the conventional lid has problems such as troublesome attachment / detachment with respect to the slab hole.
Therefore, an object of the present invention is to provide a lid for a slab hole that can be easily detached from the slab hole and can be easily reused.

For this reason, this invention set it as the lid | cover of the structure described in each claim of a claim.
According to the lid of claim 1, the seal member is installed on the upper surface of the concrete slab in a state where the slab hole is positioned on the inner peripheral side of the annular seal member, and the rear cover member is attached to the slab hole. It is placed on the seal member in a state of closing the upper side. As a result, the seal member is pressed against the upper surface of the concrete slab by its own weight and is brought into close contact therewith. In this way, the periphery of the slab hole is sealed in a watertight manner by the sealing member sandwiched between the lid member and the concrete slab, so that rainwater or the like does not enter the slab hole, and therefore rainwater is downstairs. Intrusion can be prevented.
The seal member is made of a material rich in elasticity, so that even if there is unevenness on the top surface of the concrete slab and the surface is not finished flat, the seal member is placed on the top surface of the concrete slab. Can be adhered to.
Installation or removal work can be done by installing a seal member around the slab hole, and then placing the lid member on the seal member to bring the seal member into close contact with the concrete slab so that the slab hole can be sealed watertight. Is easy and can be applied to various forms of work sites, and is excellent in handling and versatility.
By appropriately setting the length of the sealing member and the size (area) of the lid member, not only one slab hole but also a plurality of slab holes can be closed at a time. The seal member can be obtained, for example, by joining both ends of a rubber cord having a cross-sectional shape cut to an appropriate length and having a diameter of about 20 millimeters.

  According to the lid of the second aspect, the sealing member can be brought into close contact with the concrete slab by the weight of the lid member itself. In addition, the cost of the lid can be reduced by using an easily available iron plate.

  According to this invention, it is possible to close the slab hole in a watertight manner with a simple configuration, so that it is possible to prevent inundation of rainwater downstairs, thereby maintaining a favorable construction site environment, It is possible to prevent damage to construction materials.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a construction example of the drainage stacks 2 and 3 after the construction is completed. The upstream drainage stack 2 and the downstream drainage stack 3 are connected by a drainage pipe joint 1. The drainage pipe joint 1 is fixed in a state of passing through the slab hole 10 of the concrete slab C.
The drainage pipe joint 1 includes a trunk portion 1a having a lateral branch pipe receptacle 1c, an upper receptacle 1b formed at the upper portion of the trunk portion 1a, and a lower connection port 1d formed at the lower portion of the trunk portion 1a. . A lower end portion of the upstream drainage stack 2 is connected to the upper receptacle 1b, and an upper end portion of the downstream drainage stack 3 is connected to the lower connection port 1d. A toilet 5 is connected to the lateral branch pipe receiving port 1c through a lateral branch pipe 4.
FIG. 2 shows a state in which the drainage stack 1 is not constructed in the slab hole 10 of the concrete slab C before the above construction is performed. FIG. 2 shows a state in which the slab hole 10 is provided through the concrete slab C at a planned piping construction position. The size (diameter) of the slab hole 10 is appropriately set according to the size of the drainage pipe joint 1 to be attached. With the drainage pipe joint 1 positioned in the slab hole 10, the drainage pipe joint 1 is fixed to the concrete slab C by refilling the slab hole 10 with mortar or the like.
Until the operation of fixing the drainage pipe joint 1 to the concrete slab C is performed, the slab hole 10 is watertightly closed by the lid 20 as shown in FIGS.
The lid 20 includes a lid member 21 and a seal member 22. As shown in the figure, the lid member 21 is an iron plate having a substantially square plate thickness of, for example, about 15 millimeters. The lid member 21 has a size (area) that can be placed on the entire seal member 22 (full length).
The seal member 22 is made of elastic rubber, and has a circular cross section and an annular seal ring. The seal member 22 is made of an elastic rubber having an appropriate hardness and cross-sectional shape corresponding to the degree of unevenness on the upper surface of the concrete slab C.
The lid 20 is first installed on the upper surface of the concrete slab C with the slab hole 10 positioned on the inner peripheral side thereof, and then the lid member 21 is placed on the sealing member 22 as shown in FIG. The seal member 22 is placed between the concrete slab C and the lid member 21 so as to be placed over the slab hole 10. Thus, the seal member 22 is sandwiched between the concrete slab C and the lid member 21 and the weight of the lid member 21 is added, so that the seal member 22 is placed on the upper surface of the concrete slab C and the lower surface of the lid member 21. On the other hand, it is in a state of being in close contact with each other.
Further, as shown in the drawing, since the concave portion 30 and the convex portion 31 are formed on the upper surface of the concrete slab C, when the upper surface of the concrete slab C is not finished to a clean flat surface, these concave and convex portions 30. , 31 is preferably installed, for example, on the inner peripheral side. For this reason, it is desirable to use the seal member 22 having a sufficient length with respect to the periphery of the slab hole 10.

According to the lid 20 of the present embodiment configured as described above, the seal member 22 is installed on the upper surface of the concrete slab C so as to surround the slab hole 10, and the lid member 21 is attached to the seal member 22 thus installed. By putting it on, rainwater or the like can be prevented from entering the slab hole 10.
Further, since the rubber member made of elastic rubber is used for the seal member 22, the installation position (arbitrary position of the slab hole 10 and the surroundings (presence / absence of the concavo-convex portions 30, 31)) can be arbitrarily set. Since the installation shape can be changed and used, it can be a highly versatile lid for various forms of slab holes.
Further, since the seal member 22 is simply placed on the upper surface of the concrete slab C and the lid member 21 is simply placed thereon, installation and removal from the slab hole 10 can be performed very easily. It can be easily reused for another slab hole.

Various modifications can be made to the embodiment described above. For example, the configuration in which the lid member 21 and the seal member 22 are separated is illustrated, but a clip or the like is used on the lower surface side (side facing the slab hole 10) of the lid member 21 or the seal member is attached by bonding. It is good also as a structure which handles both as one.
Moreover, although the structure used with respect to one slab hole 10 was illustrated, as shown in FIG. 6, the one sealing member 23 was installed in the state which located the several slab holes 11-13 on the inner peripheral side, It is good also as the lid | cover 30 of the structure which mounted the one cover member 24 on the top.
In addition to the case where the sealing member 22 is installed in an annular shape (circular annular shape), the sealing member 22 may be installed in various shapes such as a triangular annular shape such as a triangle or a quadrangle, a gourd shape, an elliptical shape, etc. Can also be used. Thus, by using a flexible sealing member such as a rubber ring, the installation shape can be arbitrarily changed, and the versatility of the lid can be enhanced in this respect.

Further, the sealing member 22 made of elastic rubber is exemplified. However, for the sealing member, for example, a material having characteristics such as a drawing ruler or a material made of hard rubber whose shape does not change may be used. it can. Further, as the sealing member, a plate member or a steel plate having no elasticity can be used in an annular shape, and further, a sealing member (frame) in which the shape surrounding the slab hole (installation shape) is fixed is used. Can be used. In this case, if necessary, for example, a caulking agent may be applied to the lower surface of the seal member or the upper surface of the concrete slab according to the situation at the site to increase the degree of adhesion between them.
The lid member can be an iron plate or other metal plate, wood, plastic plate, or the like. By giving this lid member an appropriate weight, it is possible to ensure an appropriate degree of adhesion of the sealing member to the concrete slab. Even if the lid member itself is lightweight, an equivalent effect can be obtained by placing a weight on the lid member.
The lid member may have a block shape in addition to a flat plate shape. The lid member only needs to have an area sufficient to bring the entire sealing member into close contact with the concrete slab.
Further, for example, as shown in FIG. 7, a plurality of sealing members 25 and 26 are installed in the plurality of slab holes 14 to 16, and a lid 40 having a structure in which one lid member 27 is placed thereon is provided. You can also.

It is a side view which shows the state of the drain pipe joint periphery after completion of drain pipe construction. In the figure, the concrete slab and the slab hole are shown in a longitudinal section. It is a longitudinal cross-sectional view of a concrete slab and a slab hole. It is a longitudinal cross-sectional view which shows the state which installed the sealing member around the slab hole. It is a longitudinal cross-sectional view which shows the state which mounted the cover member on the sealing member. It is a top view of the state which installed the lid | cover with respect to the slab hole. In this figure, the lid member is shown by a two-dot chain line, and the lower part of the lid member is seen through. It is a top view in the state where a lid was installed to a plurality of slab holes. Also in this figure, the lid member is shown by a two-dot chain line, and the lower part of the lid member is shown in a transparent state. It is a figure which shows the lid | cover of another form, Comprising: It is a top view of the lid | cover of the form which installed the some sealing member with respect to several slab holes, and mounted | covered the lid member with respect to this.

Explanation of symbols

C ... Concrete slab 1 ... Drainage pipe joint 2 ... Drainage stack (upstream side)
3 ... Drainpipe (downstream side)
4 ... Horizontal branch pipe 5 ... Toilet bowls 10-16 ... Slab hole 20 ... Lid (first embodiment)
21 ... Lid member 22, 23 ... Seal member 24 ... Lid member 25, 26 ... Seal member 27 ... Lid member 30 ... Lid (second embodiment)
40 ... Lid (third embodiment)

Claims (4)

  An annular seal member installed on the upper surface of the concrete slab, surrounding the periphery of the opening on the slab upper surface side of the slab hole provided through the concrete slab, and the seal placed on the seal member A slab hole lid comprising a lid member that closes the upper portion of the slab hole in a state in which the member is in close contact with the upper surface of the concrete slab.   The slab hole cover according to claim 1, wherein an elastic rubber ring having elasticity is used as a seal member.   The lid according to claim 1, wherein an iron plate is used as the lid member, and the sealing member is brought into close contact with the upper surface of the concrete slab by its own weight.   The lid according to claim 1, wherein the lid member and the seal member are separated from each other, and the seal member has a configuration in which an installation shape with respect to the slab hole can be arbitrarily changed.

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