The soil profile at a site for a proposed office building consists of a layer of fine sand 10 ft thick above a layer of soft, the clay is overconsolidated with an OCR = 2.5, 2 ft thick as shown in Figure below. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 ft below ground level. The void ratio of the sand is 0.76 and the water content of the clay is 38%. The building will impose a vertical stress increase of 3000 psf at the middle of the clay layer. Estimate the primary consolidation settlement of the clay. Assume the soil above the water table to be saturated, Cc = 0.3, and Gs = 2.7 and, w = 38%, and C, = 0.05. Determine the .primary consolidation settlement of the clay Fine sand 7 ft Clay 2 ft Coarse sand
The soil profile at a site for a proposed office building consists of a layer of fine sand 10 ft thick above a layer of soft, the clay is overconsolidated with an OCR = 2.5, 2 ft thick as shown in Figure below. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 ft below ground level. The void ratio of the sand is 0.76 and the water content of the clay is 38%. The building will impose a vertical stress increase of 3000 psf at the middle of the clay layer. Estimate the primary consolidation settlement of the clay. Assume the soil above the water table to be saturated, Cc = 0.3, and Gs = 2.7 and, w = 38%, and C, = 0.05. Determine the .primary consolidation settlement of the clay Fine sand 7 ft Clay 2 ft Coarse sand
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The soil profile at a site for a proposed office building
consists of a layer of fine sand 10 ft thick above a layer of
soft, the clay is overconsolidated with an OCR = 2.5, 2 ft
thick as shown in Figure below. Below the soft clay is a
deposit of coarse sand. The groundwater table was
observed at 3 ft below ground level. The void ratio of the
sand is 0.76 and the water content of the clay is 38%.
The building will impose a vertical stress increase of
3000 psf at the middle of the clay layer. Estimate the
primary consolidation settlement of the clay. Assume the
soil above the water table to be saturated, Cc = 0.3, and
Gs = 2.7 and, w = 38%, and C, = 0.05. Determine the
.primary consolidation settlement of the clay
3 ft
Fine sand
7 ft
Clay
2 ft
Soarse sand
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