Question: Determine whether a 2 . 2 m x 2 . 2 m square shallow footing located at 1 m below the surface is satisfactory to

Determine whether a 2.2 m x 2.2 m square shallow footing located at 1 m below the surface is satisfactory to support a dead load of 60 kN and a live load of 40 kN on a saturated clay, 12 m thick, overlying bedrock. Groundwater is located at 3 m below the finished surface but is known to seasonally rise to the surface. A sample of the clay was extracted at a depth of 1 m, the sample was sealed to prevent moisture content loss. The in situ water content was found to be 40%. A one-dimensional consolidation test on a specimen from the center of the sample at the in situ water content gave the following results: Cc =0.32, Cr =0.1, and OCR =2. A standard drained triaxial compression test was carried out on the sample and
cs was found equal to 29o. The tolerable total settlement of the footing is 25 mm. Assume the effective Poissons ratio is 0.35, and Gs =2.7.

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