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Engineering & Design Info

Standards and Specifications

These standards and specifications are for use with sanitary sewer design and construction projects typically encountered in the extension of sanitary sewer service to new developments. Some projects may require specific specifications be created by the developer's engineer depending on size, location, depth or other factors which the District's standard specifications do not cover. The developer's engineer must consult, with the District on each project to determine if project-specific specifications are required.

Standards & Specifications (PDF - 19.4MB)
Service Line Installation (including Elder Valves) (PDF - 24K)
Construction Notes (PDF - 48K)
Design Criteria for Gravity Sewer Lines (PDF - 20K)

Sewer Details

Manholes (Autocad DWG - 118K)
Pipe-trench (Autocad DWG - 32K)
Service (Autocad DWG - 61K)
Elder Valve (a) (Autocad DWG - 26K)
Elder Valve (JPEG image - 714K)
Water Crossing (Autocad DWG - 45K)
Concrete encasement (Autocad DWG - 79K)