Question: Assume an exploratory drill hole was made in a stiff saturated clay having a moisture content of 2 8 % and Gs = 2 .

Assume an exploratory drill hole was made in a stiff saturated clay having a moisture content of

28 %

and Gs

= 2.60 .

The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of

6

m above the top of the sand layer. If an open excavation is to be made in the clay, what is the Factor of Safety against heaving if the depth of the excavation is

3

meters?

Find: Factor of Safety

Find: factor of safety

Assume an exploratory drill hole was made in a

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