The resultant pressure of water on the face of dam is equal to ____________________ ?
Correct answer: A. 1/2 WH2
- A. 1/2 WH2
- B. 1/2 WH
- C. WH
- D. All are correct
Explanation
Hydrostatic pressure increases uniformly with depth, producing a triangular pressure distribution whose resultant is one-half the unit weight multiplied by width and the square of water depth, or 1/2 WH² when unit weight is omitted. Thus the force acts at one-third of the water depth above the base.
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