Civil Engineering - UPSC Civil Service Exam Questions - Discussion

Discussion Forum : UPSC Civil Service Exam Questions - Section 20 (Q.No. 31)

UPSC Civil Service Exam Questions

31.

In a design of storm sewers, if the time taken by rain-water to flow from the farthest point of the watershed to the sewer inlet is 't_i' and the time of flow of water from the sewer inlet to the point in the sewer that is under consideration is 't_f', then the time of concentration will be

t_i

t_f

t_i + t_f

t_i or t_f whichever is greater