Garage roof plate 15cm thick, whether the backwater belt need to add water-stopping steel plate.

The garage roof plate is 15cm thick, the backwater belt does not need to add water-stopping steel plate.

Water-stop steel plate is steel plate water-stop: in the box foundation or basement, the concrete of the bottom plate and the outer wall plate is poured separately, and the next time the concrete of the wall plate is poured, there will be a construction cold joint, and when the location of this joint is below the water table line, it will be easy to produce water seepage. This requires technical treatment of this joint, there are many ways to deal with it, and one of the more common methods is to set up a water-stop steel plate as shown in the figure.

That is, in the pouring of the lower layer of concrete, pre-buried 300mmx3mm steel plate, of which there are 10-15cm of the upper part of the exposed outside, in the next pouring of concrete together with this part of the steel plate, to stop the outside of the role of the pressure of water seepage. General steel plate waterstop is used cold-rolled plate as the parent material, because the thickness of cold plate can be uniform, hot plate general thickness does not reach the degree of uniformity, the thickness is generally 2 mm or 3 mm, the length is generally processed into a 3-meter-long or 6-meter-long, generally three meters for good transportation. Water-stop steel plate on the welding node requirements are high, there can be no leaks, affecting the waterproof performance.

Construction points:

1, should make every effort to ensure that the water-stopping steel plate in the wall on the center line;

2, the welding between the two steel plates should be full and double-sided welding, steel plate lap not less than 20mm;

3, the treatment of the wall corners, one, the whole steel plate bending; two, d-shaped welding; three, 7-shaped welding.

4, water-stop steel plate support welding, you can use a small steel bar electric welding on the main bar;

5, water-stop steel plate through the column hoops, you can disconnect the hoops through the hoop, made of open hoops, electric welding on the steel plate.

6, water stop steel plate "opening" towards the water.

6, water stop steel plate "opening" toward the water surface.