Waste Water Engineering
For a continuous flow type of sedimentation tanks

Maximum horizontal flow velocity is limited to 0.3 m/minute
All listed here
Width of the tank is normally kept about 6 m
Length of the tank is normally kept 4 to 5 times the width

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Waste Water Engineering
The pressure exerted by

All listed here
The internal pressure if any, causes tensile stress in the pipe material
The sewage when running full from inside, is called internal pressure
Pressure sewers are designed to be safe in tension

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