Sewage pipe design principles

1) as far as possible in the case of shorter pipelines, less burial depth, so that the largest area on the sewage self-flow discharge.

(2) To give full consideration to the topography.

(3) The direction and number of main sewage pipes should take into account the location and number of sewage plants and outlets.

(4) try to use gravity flow form, both to reduce the depth of burial, but also to build fewer pumping stations.

(5) minimize the crossings with rivers, valleys, railroads and various underground structures. Laying of trunk sewers to consider the address conditions.

(6) Sewer pipes are usually located under sidewalks, greenbelts or slow lanes, and trunk sewers should preferably start with factories discharging large quantities of industrial wastewater.

(7) The pipeline should be simple and straight, not winding.

(8) Combination of near and far term.