(i) A weir across an alluvial river has a horizontal floor of length 80 m and retains 8 m of water under full pond condition. If the downstream sheet pile is driven to a depth 8 m below the average bed level, then calculate the exit gradient. Also assuming a porosity of 25% and the relative density of soil particles as 2.70, determine the critical exit gradient and the factor of safety of the system with respect to the exit gradient.

(i) A weir across an alluvial river has a horizontal floor of length 80 m and retains 8 m of water under full pond condition. If the downstream sheet pile is driven to a depth 8 m below the average bed level, then calculate the exit gradient. Also assuming a porosity of 25% and the relative density of soil particles as 2.70, determine the critical exit gradient and the factor of safety of the system with respect to the exit gradient.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter7: Seepage

Section: Chapter Questions

Problem 7.7CTP

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