1. First of all, a u-shaped stagnant water must be set between the groundwater leakage and the lateral branch pipe, and the height of the stagnant water should not be less than 5cm to ensure the normal use in the later period.
2. After the sewer riser enters below the ground on the first floor, attention should be paid to the treatment of the elbow between the connection buried in the ground and the outdoor horizontal main pipe. This place cannot be directly a 90 degree elbow. Be sure to connect with a 45-degree elbow. In this way, it is possible to prevent the mud from clogging the junction between the two horizontal and vertical pipes.
3. The diameter of the buried horizontal trunk pipe should be increased as much as possible, generally not less than 15cm, and the slope should be increased as much as possible, and it should not be too loose. Try to control it within a reasonable range to ensure that the later use is safer and more convenient.
4. When making septic tanks and outdoor manholes (manholes), exhaust holes must be reserved at the top cover to prevent the exhaust gas generated here from overflowing into the room along the discharge horizontal main pipe. In addition, the construction needs to be carried out by professional personnel, which can avoid some problems in details.