. The foundation soil at the toe of a masonry dam has a porosity of 40% and the specific gravityof grains is 2.70. To assure safety against piping, the specifications state that the upward gradientmust not exceed 25% of the gradient at which a quick condition occurs. What is the maximumpermissible upward gradient?

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Answered: The foundation soil at the toe of…

Engineering

Civil Engineering

The foundation soil at the toe of grains is 2.70. To assure saf must not exceed 25% of the

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter9: Settlement Of Shallow Foundations

Section: Chapter Questions

Problem 9.5P

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. The foundation soil at the toe of a masonry dam has a porosity of 40% and the specific gravity
of grains is 2.70. To assure safety against piping, the specifications state that the upward gradient
must not exceed 25% of the gradient at which a quick condition occurs. What is the maximum
permissible upward gradient?

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