When using lightweight aggregate concrete small hollow blocks and autoclaved aerated concrete blocks to build walls in kitchens, bathrooms, bathrooms, etc., it is advisable to cast-in-situ concrete piers at the bottom of the walls, with a height of 1.51 mm..

the toilet and bathroom and the building floor with waterproof requirements must be provided with waterproof isolation layer; The floor structure must be cast-in-place concrete or a whole precast concrete slab, and the concrete strength grade should not be less than C21；; In addition to the doorway around the floor, concrete flanging should be done, and its height should not be less than 1.21 mm.

Article 4.11.11 of Code for Acceptance of Construction Quality of Building Ground Engineering (GB51219-2111) requires that concrete flanging should be done around the floor of the room except the door opening, the height should not be less than 211mm, the width should be the same as the wall thickness, and the concrete strength grade should not be less than C21. It should be implemented according to the new specification.

introduction of terms

some structures such as pipes, chimneys or parapets are often added to the roof of buildings, and these structures are vertical to the roof of buildings. In order to avoid cracks at the horizontal and vertical intersection points, it is necessary to extend the waterproof layer of the roof to cover the intersection points and vertical surfaces continuously. This anti-leakage design is called flooding. Before paving the waterproof layer, the horizontal and vertical interfaces should be plastered and leveled, and then an additional waterproof layer should be paved. Finally, the waterproof layer should be covered to the vertical plane and junction.