26 A trapezoidal flume carries water It has a base of 30 cm

26 A trapezoidal flume carries water. It has a base of 30 cm, a top of 60 cm and sloped wall lengths of 25 cm. The water flowing in the flume has a vertical depth of 16 cm with a wetted perimeter of 70 cm. The flume has a roughness coefficient of 70 and a slope of 10 mkm The total flume area is 900 cm2 while the flow area is 672 cm2 Using the Hazen-williams equation for open channel flow, what is the velocity in the flume? (A) 000300 m\'s o (B) 1.13 ms o (C) 133 ms (D) 1.75 m s

Solution

v= R^0.67 S^0.5/n

R=(672/70), S=(1÷100), find mannings coefficient n

^{finally v is obtained}