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Which of the following criteria has to be satisfied for no tension at any point on a gravity dam?

Which of the following criteria has to be satisfied for no tension at any point on a gravity dam? Correct Answer The resultant force for all conditions of loading must pass through the middle third of the base

The minimum vertical stress Pmin is equal to zero in order to ensure that no tension is developed anywhere. If Pmin = 0, e = B/6 i.e. the maximum value of eccentricity that can be permitted on either side of the center is equal to B/6. This concludes the fact that the resultant of all forces must lie within the middle third of the joint width.

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