Suggestions on installation of manhole in different scenarios.

Wire connector: It is suggested to reserve a "circuit maintenance port" every 30 meters to facilitate future circuit maintenance.

Sewer system: It is very important to ensure the smoothness and maintainability of the manhole, especially in the decoration of kitchen and bathroom. The reserved manhole can avoid the trouble of removing the ceiling or tile due to the blockage of the sewer.

Strong and weak current box: Although the strong and weak current box may affect the appearance, it is necessary to ensure the convenience of opening it to facilitate the later maintenance work.

Bathtub: For embedded bathtubs, it is particularly important to reserve the manhole, because the sewer pipe is small in diameter, which is easy to block and difficult to dredge.