+1 vote
in Irrigation Engineering by (75.2k points)
Calculate the value of hydraulic mean radius for a channel designed by Lacey’s theory which has a mean velocity of 1m/sec. The silt factor can be taken as unity.

(a) 1 m

(b) 0.5 m

(c) 2 m

(d) 2.5 m

I got this question in final exam.

Enquiry is from Cross Drainage Work Design topic in portion Cross Drainage Work of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Right answer is (d) 2.5 m

Best explanation: Using Lacey’s equation:

R = 5/2 (V^2/f) where V = 1 m/sec and f = silt factor = 1.

R = 2.5 m.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...