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The vertical component of the earthquake wave which produces adverse effects on the stability of a dam when is acting in ____________________

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+1 vote
in Irrigation Engineering by (75.2k points)
The vertical component of the earthquake wave which produces adverse effects on the stability of a dam when is acting in ____________________

(a) upward direction

(b) downward direction

(c) both upward and downward direction

(d) any direction

I got this question in an interview.

The question is from Gravity Dam Design topic in chapter Gravity Dam Design and Construction of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Right choice is (b) downward direction

The explanation: When the vertical acceleration is acting downward the foundation try to move downward away from the dam body. This reduces the effective weight and the stability of the dam. It is the worst case for design.

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