Sanitary Sewers calculations

  1. What is the wetted perimeter of a 760-mm (30-in) pipe flowing full?

  2. What is the hydraulic radius of a 910-mm (36-in) pipe flowing half full?

  3. Find the velocity of flow in a 460-mm (18-in) pipe flowing full at a slope of 2 percent. Manning’s is 0.010.

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