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Environmental engineering construction of sewers involves the following steps: Setting out - Alignment and gradient - Excavation of trenches, timbering, and dewatering - Laying and jointing - Testing - Backfilling
Sewer appurtenances are accessories that are necessary for the efficient operation of the sewerage system. They are structures and devices that are constructed at suitable intervals along a sewer line.
Some examples of sewer appurtenances include: Manholes, Lamp holes, Street inlets, Catch basins, Inverted siphons, Terminal cleanouts, Flush tanks, Service connections, Underdrains, Junction chambers, Diversion chambers, Tide gates. Topics include: Types of Sewers, Material for Sewers, Joints and Shapes of Sewers and Cleaning, Maintenance and Ventilation of Sewer, Forces and Loads on Sewer, Devices Associated with Sewer, Inverted Siphon, Storm Regulator and Sewage Pumping.
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