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Waste Water Engineering

Waste Water Engineering
The maximum depth of sedimentation tanks, is kept

4 m
3 m
3.5 m
4.5 m

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Waste Water Engineering
The underground sewers are more subjected to

Bending force
Shearing force
Tensile force
Compressive force

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Waste Water Engineering
The sewerage system originates from

Lateral sewers
House sewers
Branch sewers
Main sewers

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Waste Water Engineering
The rate of accumulation of sludge in septic tanks is recommended as

25 litres/person/month
30 litres/person/month
30 litres/person/year
25 litres/person/year

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Waste Water Engineering
If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is

None of these
1 in 100
1 in 60
1 in 120

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Waste Water Engineering
The self-cleansing velocity of water flowing through pipe lines, is

1 metre/sec
2 metres/sec
0.25 metre/sec
0.5 metre/sec

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