Question 4 (a) Explain the difference between fetch limited and duration limited wave formation. 3 Marks (b) A wave of h

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Question 4 A Explain The Difference Between Fetch Limited And Duration Limited Wave Formation 3 Marks B A Wave Of H 1 (278.04 KiB) Viewed 57 times

Question 4 (a) Explain the difference between fetch limited and duration limited wave formation. 3 Marks (b) A wave of height 2.2 m breaks onto a vertical wall whose base is 3 m below mean sea level. The depth of the water from the mean sea level to the sea bed is 2.5 m. Calculate the maximum force per unit length on the wall and the bending moment at the base of the wall. 105 kN t = 40.46 kW Fs M = 319 KN th 10 Marks (c) A reservoir of capacity 39.5 Mm3 is to be sited in a river valley. The river supplying the reservoir slopes at 1 in 1500, and has a bed width of 30 m. The river boundary is made of coarse sand (assume Manning's n = 0.023) with specific gravity of 2.65 and average grain size of 0.5 mm. Estimate the time it would take for the reservoir capacity to be reduced to half of its original capacity, if the average discharge through the river is 50 m3/s. Use Ackers-White equation for total sediment load estimation 12 Marks Qs = 0.009 72 Yrs. 3 Ime