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Waste Water Engineering

Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

d = 0.5 B
d = 0.2 B
B = 0.5 d
B = 0.2 d

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Waste Water Engineering
For a continuous flow type of sedimentation tanks

All listed here
Maximum horizontal flow velocity is limited to 0.3 m/minute
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 sewerage system originates from

Main sewers
Lateral sewers
House sewers
Branch sewers

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Waste Water Engineering
If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by

Kutter
Bazin
Manning
Chezy

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Waste Water Engineering
The discharge per unit plan area of a sedimentation tank, is generally called

Surface loading
All of these
Over flow rate
Over flow velocity

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Waste Water Engineering
The asbestos cement sewers are

Not structurally strong to bear large compressive stress
Susceptible to corrosion by sulphuric acid
All of these
Light in weight

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