1. Water seepage at the root of the wall: First, when building the basement wall, ensure that the masonry mortar is full and avoid water leakage at brick joints; Secondly, before plastering inside and outside the external wall, the roots should be cleaned to ensure that the plastering of the roots is compact and in place, and the internal angle of the external wall and foundation should be made into a splayed angle when necessary; Secondly, it is necessary to ensure that the bottom elevation of waterproof mortar outside the wall is higher than the indoor standard of the basement. When laying a flexible waterproof layer on the external wall, special treatment should also be carried out at the root of the wall, and it must be laid in place.
2. For the deformation joint, the common practice is to fill it with foam board on the inner side of the joint, then block it with asphalt hemp yarn, and then apply ointment on the outer side to make two cloths and three coats, which not only ensures the deformation of the deformation joint, but also ensures the waterproof effect. A protective wall should be built outside the waterproof layer, and the width is wider than each side of the waterproof layer 120. The gap between the waterproof layers of the protective wall should be filled with cement mortar to avoid damaging the waterproof layer when backfilling the foundation pit.
3, the pipe through the hole in the basement, after being pipe installation, with hard objects around.