If Q is discharge is cubic metres per sec and D is the economical diameter of the pipe. According to
Lea
(A) D = 0.67 to 0.87 Q
(B) D = 0.77 to 0.97 Q
(C) D = 0.97 to 1.22 Q
(D) D = 1.22 to 1.33 Q
Lea
(A) D = 0.67 to 0.87 Q
(B) D = 0.77 to 0.97 Q
(C) D = 0.97 to 1.22 Q
(D) D = 1.22 to 1.33 Q