Example 2: A triangular gutter with side slope at angle 60 has a depth 250 mm. If the discharge is 0.04 m3/s. Find the slope of the gutter bed? (c=50) # 30° 250 m

1- A 2 m wide rectangular channel (n=0.015), carries a discharge of 6 m³/s. The channel is laid on slope of 0.0162. The channel width and slope changed to 1.5 m and 0.0122, respectively. (a) Calculate critical and normal depths. (b) Calculate Froude numbers. (c) Plot the water surface profile. 2- Sketch and label the type of water surface profile in (a), (b) and (c). (a) (b) (c) TTTTTTTTT L n (Small) n (Large) TTTTTTT NDL NDL CDL NDL CDL NDL MITT

4. The water at the floodgate looks like in the picture with V1 = 0.2 m/s and y1 = 1m. Calculate: - depth at point 2 - flow velocity at point 2 - Froude Number value Gap = 20 cm (1) (2)

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)