Design the section of a combined circular sewer from the following :…

Question

Design the section of a combined circular sewer from the following :

Area to be served = 150 hectares

Population of the locality = 50,000

Maximum permissible velocity = 3.2 m/s

Time of entry = 5 mins

Time of flow = 20 mins

Rate of water supply = 270 l/d/capita

Impermeability factor = 0.45