Civil Engineering - Waste Water Engineering

11.
Sewer ventilating columns are generally placed at
distances 150 m to 300 m
upper ends of branch sewers
every change in the size of sewers
all the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
In case of Imhoff tanks,
the shape is rectangular
detention period is 2 hours
the velocity of flow is restricted to 0.30 m/minute
surface loading is limited to 30, 000 litres/m of plan area per day
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
If the depth of partial flow in a sewer of diameter 2 m, is 50 cm, its wetted perimeter is
π
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
A drop manhole is provided if
a sewer drops from a height
a branch sewer joins the main sewer at higher level
a lamp is inserted to check obstruction
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is
5
10
15
20
Answer: Option
Explanation:
No answer description is available. Let's discuss.