A trapezoidal channel is 5.0 km long with the side slopes of Z=0.5 constructed in clay soil. Up to the first 2 km, the bed-width of the channel is 4.90 m and the depth of flow is 1.05 m. Thereafter, the bed-width and the depth are 4.0 m and 0.885 m, respectively, right up to the downstream end of the channel. Estimate the total seepage loss through the channel by Moles-Worth equation.

The flow net under a hydraulic structure has 5 flow channel with 10 equipotential drops. If the permeability of the bed material is 1.5 *10^-4 m/sec, find the quantity of seepage per meter width of the structure in m ^ 2 /sec under 3m head.

A pluvia drainage channel, in a city where large sudden rains occur, has the shape shown in the figure. It is made of unfinished concrete and has a 0.5 percent slope. The sectionhigher allows large volumes to be transported through the channel. Determine the normal discharge for depths of 0.5 m and 2.5 m

a) A trapezoidal weedy excavated earth channel has a bottom slope of 1°, base width of 5 m and a side surface slope of 1:1, as shown in Figure 1. Given that n = 0.030, calculate the flow depth, y. 45° 45° - 5 m Figure 1

A trapezoidal channel with a bottom width of Bo = 4 m and a sidewall slope of m = 2 carries a discharge of 8 m3/s. what is the critical depth of the channel?  ( Show calculation and sketch)   a) 0.84 m b) 0.72 m c) 0.96 m d) 0.66 m

The coefficient of permeability below a dam is 12 m/day. The water in the upstream side is 32 meter higher than on the downstream side (level with the ground). To estimate the seepage below the dam, a flow net is graphically drawn such that the number of potential drops, Nd = 8 and the number of flow channels Nf = 3. The base of the dam is founded 1.8 m below the ground. Between the heel and the toe of the dam, a distance of 32 meters, there are 6 potential drops. a. Estimate the seepage per meter length of the dam in liters per minute. (IN EXPONENTIAL FORM AND IN 2 DECIMAL PLACES) b. Determine the uplift pressure at the heel in kPa. (IN 2 DECIMAL PLACES) c. Determine the uplift pressure at the toe in kPa. (IN 2 DECIMAL PLACES)