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Waste Water Engineering

Waste Water Engineering
The sludge does not contain waste water from

Bath rooms
Wash basins
Toilets
Kitchen sinks

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Waste Water Engineering
The maximum diameter of sewers adopted in the designs is

4.0 m
3.0 m
2.0 m
1.0 m

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Waste Water Engineering
The porosity of sediments in sewer pipes, is usually taken as

0.011
0.013
0.012
0.01

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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
Chezy
Bazin
Manning

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

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

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Waste Water Engineering
The minimum diameter of a sewer is kept

10 cm
15 cm
25 cm
20 cm

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