Refer to Problem 9.6. It is required to make an open excavation of 18 ft in the
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Refer to Problem 9.6. It is required to make an open excavation of 18 ft in the saturated clay. To avoid heaving, the cut will be filled with water similar to that shown in Figure 9.6. What should be the height of water, h, in the excavation?
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21 ft H 6 ft ↓ FIGURE 9.6 Saturated clay Sand Ysat = 120 lb/ft³ 13.5 ft Ysat = 114 lb/ft³
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