JPS587062A - Construction of corner drain - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for installing a corner drain, that is, a horizontal roof drain, used for draining rainwater on the roof of a building, etc. A corner drain is usually attached to a rainwater collection ditch installed around the inner circumference of the roof of a building, etc., with the opening part connected to the water collection ditch, and the other end connected from the rainwater gutter to the ground drainage ditch via a gutter. It's singing. This installation of the corner drain is a so-called retrofitting because the culvert must pass through the side wall and be connected to the discharge pipe of the corner drain, and it is necessary to provide an appropriate drainage slope. In other words, as shown in the cross-sectional view of Fig. 1, the corner drain 2 is installed at the planned position in the cavity when pouring slab concrete, and after the formwork is removed after the concrete is poured. , 'Position the main body of corner drain 2,
The installation method is such that after connecting the gutter 3, the cavity // is leveled and mortar /2 is poured in and installed. However, this method of retrofitting is difficult because of the leveling mortar that flows in later.
, 2 does not blend well with the concrete and the greenery is easily cut, which often causes water leakage, and the pre-prepared hollow part is close to the pillar part, so there are construction constraints due to the reinforcement arrangement. I often receive it.

Even if this corner drain is installed in advance, it is necessary to provide a gutter through hole in the formwork, so it is inevitable that the number of man-hours for the formwork during construction will increase. The present invention provides a construction method that eliminates the drawbacks of these conventional construction methods, simplifies the corner drain installation process, and shortens the construction period.

The details of the present application will be explained below with reference to the drawings. Figure 1 is a cross-sectional view of corner drain installation using the conventional method. Figure 2 is a cross-sectional view of corner drain installation using the present method. Figures 3 and 4 are cross-sectional views showing each step of the present method. Insert one end 4t of a paper pipe with the same inner diameter as this outer diameter into the outer periphery of the discharge pipe 22 for fitting the corner drain main body 2. Next, set the corner drain main body at an appropriate slope and position it. At the same time, the paper tube 4 is cut so that the end 412 comes into contact with the outer formwork 31 of the side wall. The vertical edge of the opening of the main body 2 of the corner drain is the inner formwork of the side wall! At the same time, fix the protective film holding plate ! 3 on the flat edge with gi.
And between the holding plate 33, an appropriate protective film 23 is applied to prevent concrete from flowing in from the opening 2/ when concrete is poured. At the position where the 4t is in contact, the fixing leg 61 is
A paper tube positioner 6 formed of a short tube made of synthetic resin or the like is fixed. The outer diameter of this paper tube positioning tool B is large enough to be inserted into the paper tube 4. By inserting 1 into this positioning tool B at the end of the paper tube, the paper tube can be inserted into the formwork 4.
Fixed to /. In this state, the slab and side wall concrete will be poured.

Formwork after concrete solidification 31. ! Remove the holding plate S3 and insert the gutter 3 from the end Jj of the paper tube l, and
Mortar /3 is injected and filled into the gap l/ between the gutter 3 and the paper tube l, which is screwed into the inside of the discharge pipe 22 of the '11 corner drain 2. Prior to this, the paper tube may be removed; on the other hand, a waterproof layer of asphalt or the like should be laid on the opening side of the corner drain by a known method along the edges of the horizontal and vertical surfaces. , and finish it off! Finish by. Once the corner drain opening has been renovated, tighten the waterproof layer retainer 3 to the opening 2/3 with bolts and secure the strainer j with screws, as shown in Figure 2, and the corner drain installation work is complete ( -) Completed 0
Although the above explanation uses a single paper tube, the same effect can be obtained even if the tube body is made of metal or synthetic resin.

As explained above, in this application, by using paper tubes, it is possible to easily secure the gutter through hole at the stage of the vertical formwork construction, and the corner drain body can be installed in advance, which is different from the conventional construction method. There is no need for the process of pouring leveled mortar into the concrete, and water leakage accidents that occur due to poor compatibility with concrete can also be avoided. Another advantage is that the construction period can be significantly shortened because the drain itself is installed first.

[Brief explanation of the drawing]

Figure 7 is a cross-sectional view of corner drain installation using the conventional construction method.
Fig. wg2 is a sectional view of the installation according to the proposed construction method, Fig. 3 and #I
, 4 are cross-sectional views showing each step of the construction method of the present application. /
is concrete, /l is cavity, 72 kt mortar,
ko is the corner drain body, 22 is the corner drain discharge pipe, 3 is the gutter, ri is the paper tube, ○S/and! 2 is a formwork. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] Fixing the corner drain main body opening to the side wall inner formwork, inserting a paper tube into the outer periphery of the discharge pipe of the corner drain main body,
Installation of a corner drain by fixing the end of the paper tube to the outer formwork of the side wall and pouring concrete, then removing the formwork, inserting the gutter into the paper tube and screwing it into the discharge pipe of the corner drain. Method.