In Chezy’s formula $${\text{V}} = {\text{C}}\sqrt {{\text{rs}}} $$ for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is
A. $${\text{D}}$$
B. $$\frac{{\text{D}}}{2}$$
C. $$\frac{{\text{D}}}{3}$$
D. $$\frac{{\text{D}}}{4}$$
E. $$\frac{{\text{D}}}{5}$$
Answer: Option D
This Question Belongs to Civil Engineering >> Waste Water Engineering
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