A gravity dam with a trapezoidal section, as shown in the figure. A distance of 15 m from the toe, a drain located, which point has a pressure due to uplift of zero and increasing uniformly to full hydrostatic at the heel. Upstream face 1H:5V, while downstream face is inclined 1H:2V. Determine the maximum foundation pressure. 7m EL. 52m EL 50m V.

For the maximum water height at full supply level, calculate the complete vectorof the resultant force on the central section of the dam wall per metre length,as it would pass through the dam base, with respect to the downstream toe (D).Account for the hydrostatic thrust force on the upstream (A-B) and downstream(C-D) faces of the dam, pore pressure on the base (A-D) and the weight of thedam wall.The weight of the radial gate and gate supporting structure can be ignored.Assume the radial gates are fully closed and there is no water on the spillway.

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