Failure Due to Tension

Q. If the eccentricity of total self-weight W of a masonry dam at its base is equal to one-fourth of base width B, then the maximum pressure at the base is given by

1. 2W/3B
2. 4W/3B
3. 5W/2B
4. 8W/3B

Q. If B is the base width and H is the height of a gravity dam, for no tension to be developed, the eccentricity (of the resultant force) should be

1. greater than H/3
2. less than H/6
3. less than B/6
4. greater than B/6