Waste Water Engineering
The normal values of over flow rates for sedimentation tanks using coagulant, ranges between

50,000 to 60,000 litres/sqm/day
80,000 to 100,000 litres/sqm/day
25,000 to 35,000 litres/sqm/day
40,000 to 50,000 litres/sqm/day

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Waste Water Engineering
The sewer pipes

Carry sewage as gravity conduits
All listed here
Are designed for generating self-cleansing velocities at different discharge
Should resist the wear and tear caused due to abrasion

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