Waterstop steel plate (waterstop steel) refers to embedding a 300mm x 3m steel plate during the pouring of the lower concrete layer, with 10-15cm of the upper part exposed. During the subsequent concrete pouring, this exposed section of the steel plate is integrated into the pour, serving to prevent external water pressure from渗入. Consequently, the waterstop steel plate requires high-quality welding joints, with no leaks allowed to affect the waterproofing performance.

1. Strive to position the water-stop steel plate along the centerline of the wall.

2. The welding between the two steel plates must be full and double-sided, with the overlap of the steel plates not less than 20mm.

3. Wall corner treatment: 1. Full steel plate bending; 2. T-shaped welding; 3. 7-shaped welding.

4. The support welding of waterstop steel plates can be done by spot welding small rebars onto the main rebars.

5. When the waterstop steel plate passes through the column hoop reinforcement, the hoop reinforcement can be cut and shaped into an open hoop, which is then welded onto the steel plate.

6. The "opening" of the waterstop steel plate faces the upstream side.