What minimum self-cleansing velocity is recommended in sanitary sewer design to prevent deposition and clogging of solid matter?
A0.15 m/s
B0.45 m/s to 0.60 m/s
C0.75 m/s to 0.90 m/s
D2.50 m/s to 3.00 m/s
Explanation
To prevent organic and inorganic solids from settling out and clogging gravity sewer lines, sanitary sewers are designed to maintain a minimum self-cleansing velocity of 0.75 m/s to 0.90 m/s at peak flow.
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