Question

4)The sol conditions at a site are 10 ft of sand ~s :: 130pcf over 12 ft d clay yc :-110pct The day is over dense sand that extends to great depth. A series of B 6ft square footings at D 8ft support column loads P- 400kip at bay spacings S 30ft The groundwater is at d 8it below surface. Consolidation testing of the day resulted in Cc 0.30and Cr 0.05 and maximum past pres sure max 2500psf and 2 - 4 cm y210The initial void ratio, ep 1.2 sec a) Determine the effective stress state before the building construction and the stress increment after the building construction in the middle of the clay layer Assume ultimate consolidation settlements will be 1.2 in. How long will it take or 90% of consolidation setlemts occur, if Tgo 0.85.

Answer 1

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4-84 OKs = 1.79-0933 10 C ko-u) Tv Gyt H2 6 ).828 112 10 ec