Consider the following statements about the stability criterion of a gravity dam.
Statement I: If the force of friction is more than the force due to water pressure, the dam is safe against sliding.
Statement II: If the resultant of the weight of the dam and the horizontal force due to water pressure lies outside the base of the dam, but within h (h = height of the dam) from the face of the dam, the dam is safe against overturning.
Statement III: To avoid tension at the base of the dam, the maximum value of eccentricity is b/6 on either side of geometrical axis of base section. Where, b is base width of dam. Which of the given statements is/are correct?
1
Statement II only
2
Statements I and III
3
Statements II and III
4
Statements I and II