Exit Gradient

Q. A weir on a permeable foundation with a downstream sheet pile is shown in the figure below. The exit gradient as per Khosla's method is

1. 1 in 6.0
2. 1 in 5.0
3. 1 in 3.4
4. 1 in 2.5

Q. A weir across an alluvial river has a horizontal floor of length 60 m and retains 6.5 m of water under full reservoir condition. If the downstream sheet pile is driven to a depth of 6.5 m below the average bed level, the exit gradient would be ____ $\times {10}^{-2}$.

1. 14

Q. A weir on a permeable foundation with downstream sheet pile as shown in the figure below. The exit gradient as per Khosla's methods is

1. 1 in 5.0
2. 1 in 3.33
3. 1 in 6.67
4. 1 in 4.5

Q. A 20 m long horizontal concrete floor under a barrage on a permeable foundation retains a 5 m head of water and has a 5 m deep downstream end pile. The exit gradient is

1. 1 in 4
2. 1 in 5
3. 1 in 6
4. 1 in 8