Q3. The total load of a chimney and its circular footing is 35 MN, as shown...

Q3. The total load of a chimney and its circular footing is 35 MN, as shown in the figure. Assume the average unit weight of soil below and above the water table is the same.

Presume: B (diameter) = 8 m, H = 6 m, and D = 2 m.

According to SPT results, the average N-value for sandy soil below the footing is 20.

Estimate the values of the friction angle and the average unit weight of soil based on N-value.
Determine the factor of safety of this footing against the bearing capacity failure using Hansen’s equations.

Expert Solution

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Ally Wells answered 7 months ago

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