Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 22 (Q.No. 8)
8.
a grit chamber of dimensions 12.0 m x 1.50 x 800 m liquid depth has a flow of 720 m3/hr. Its surface loading rate and detention time are, respectively,
40000 m3/hr/m2 and 1.2 minute
40000 1 ph/m2 and 40 minutes
40 m/hr/m2 and 12 minutes
40000 1 ph/m2 and 1.2 minute
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Rahul said:   1 year ago
I think there the height should be 0.8m.

Babai said:   4 years ago
Option D is correct.
Q/l*b = 720/12*1.5= 40 m3/hr/m2= 40000 l/hr/m2.
v/q= (12*1.5*.8/720) *60 = 1.2min.

Bunny said:   4 years ago
Option C is the correct answer.

SOR = Q/lxb = 40 and Time = volume/discharge.

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