The cross-sectional elevation of a concrete dam is given in the following figure. The dam retains water up to a height of 9 m on the upstream side as in the figure, and no water is on the downstream side. Estimate the overturning moment (per metre length of dam) due to water pressure at the toe of the dam.
(Take unit weight of water as 10 KN/m3)
1
1215 kN.m
2
2430 kN.m
3
1485 kN.m
4
1620 kN.m