A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand (Figure 9.28). The sand is under artesian pressure. A 5.75-m-deep cut is made in the clay. Determine the factor of safety against heaving at point A.
Extracted text: A 10-m-thick layer of stiff saturated clay is underlain by a layer of sand. The sand is under artesian pressure. A 5.75-m-deep cut is made in the clay. Determine the factor of safety against heaving at point A. Hint: F.S. = g/u. Psat 1925 kg/m 5.75 m 10 m 6 m 2.5 m Pa 1840 kg/m Saturated clay Sand