If the depth of excavation is 4m. What is the thickness of the brick wall of manhole?

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Environmental Engineering Practice Test: Construction of Sewers, Sewer Appurtenances and Sewage Pumping — practice the complete quiz, review flashcards, or try a random question.

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,... Show more

If the depth of excavation is 4m. What is the thickness of the brick wall of manhole?