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Waste Water Engineering

Waste Water Engineering
If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is

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

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Waste Water Engineering
Bottom openings 15 cm × 15 cm in the standing baffle wall are provided

22.5 cm c/c
30 cm c/c
15 cm c/c
50 cm c/c

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Waste Water Engineering
The underground sewers are more subjected to

Compressive force
Bending force
Shearing force
Tensile force

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Waste Water Engineering
In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept

2
0.25
10
5

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Waste Water Engineering
At the junction of sewers

None of these
Tops of both the sewers are at the same level
Top of smaller sewer is kept lower
Top of larger sewer is kept lower

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Waste Water Engineering
The minimum diameter of sewer to be adopted is

10 cm
25 cm
15 cm
12.5 cm

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