Site drainage settlement：

■ Because of the need for four sloping but uneven ground, surface waves and funnel type;

■ In the design and construction of complex slope;

■ because the pipeline requires a certain depth, thus a large amount of excavation;

■ High risk - poor drainage, water area;

■ In the pipeline has been clogged and cause system failure;

■ In the pipeline system with high maintenance costs;

■ There may be other underground pipeline system conflict

Linear drainage:

■ Linear - simple uniform appearance;

■ In the linear continuous water drainage, higher efficiency;

■ simple and easy to find the slope construction;

■ convenient installation, shallow depth excavation;

■ can effectively reduce the buried in the pipeline construction;

■ because of the linear drainage system of water collection Yubi exposure and the ground, easy cleaning and maintenance