9.3 A 6.0 ft X 12.0 ft flexible foundation is placed on a granular soil with Df = 0. The foundation applies a pressure qo = 2.4 kip/ft2. Assuming the soil mass to be infinitely thick, with Es — 300 kip/ft2 and /x, = 0.1, determine the expected settle¬ ment beneath the center of the foundation.
9.3 A 6.0 ft X 12.0 ft flexible foundation is placed on a granular
soil with Df = 0. The foundation applies a pressure qo =
2.4 kip/ft2. Assuming the soil mass to be infinitely thick, with
Es — 300 kip/ft2 and /x, = 0.1, determine the expected settle¬
ment beneath the center of the foundation.
9.4 Redo Problem 9.3 for the situation where the same soil is
underlain by bedrock at 9.0 ft below the surface.
9.5 Redo Problem 9.4 with Df = 3.0 ft.
9.8 A plan calls for a square foundation measuring 3 m X 3 m
supported by a layer of sand (see Figure 9.7). Let Df= 1.5 m,
t = 0.25 m, Eo = 16,000 kN/m2, k = 400 kN/m2/m,
= 0.3, H = 20 m, Ef = 15 X 106 kN/m2, and qo =
150 kN/m2. Calculate the elastic settlement. Use Eq. (9.27).
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