The lower limit of factor of safety against over turning in a gravity is _______________________?
Correct answer: C. 1.5
- A. 1.3
- B. 1.4
- C. 1.5
- D. 1.6
Explanation
A factor of safety of 1.5 is commonly used as the minimum against overturning for a gravity dam under ordinary design conditions. Lower values provide insufficient protection against the overturning moment produced by water pressure and other forces.
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