A pressure distribution exists under a concrete (S=2.4) dam, as sketched in Fig. 2.20. Will the dam tend to topple (sum moments about the lower right-hand corner) if: (a) H=30 m, h = 4 m (b) H= 40 m, h = 6 m (c) H=50 m, h = 8 m 4 m H P=H- 10 m Figure 2.20 p = 7h