Waste Water Engineering
In detritus tanks,

Detention period is kept 3 to 4 minutes
Flow velocity is kept 0.09 m/sec
All listed here
Organic and inorganic materials are separated

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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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