Design Procedure of a Sewer System

The design of sewer system entails preliminary investigations, detailed survey, the actual design, and preparation of final drawings and correction of plans to confirm changes made, during the construction. In the design of a sewer system, the decisions are location, size, its grade, depth of sewer, sewer material and other appurtenances to be added such as manhole, junctions and other structures to minimize turbulence and save-head losses and prevent deposits. The aim of design is not only to make the sewer system functional, but also build the system at lowest cost ensuring durability over the life of the system.