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hw8-soln

# hw8-soln - C E 4 6 7 L G e o t e c h n i c a l E n g i n e...

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CE 467L Geotechnical Engineering Spring 2010 Homework 8 Due: Thursday, April 8, 2010 1. The relationship given below between e and ci’ at critical state was determined for a given sand. Points C and D represent isotropically consolidated effective stress states for two triaxial test specimens of this sand. The specimens are 76 mm in diameter and 150 mm tall. a. If specimen C was tested in a CD TXC test, what would be this specimen’s void ratio at the critical state? What would be the volumetric strain at critical state? b. If specimen D was tested in a CD TXC test, what would be this specimen’s void ratio at the critical state? What would be the volumetric strain at critical state? c. Specimen D is tested in a CU TXC test with a back pressure of 200 kPa. Determine what will be the effective confining stress, excess pwp, ue, and total pore water pressure, u, at critical state. I ______ ____ _____ A 100 iso 7.co 2. A 3 x 4 m rectangular footing is loaded uniformly by 117 kPa.

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hw8-soln - C E 4 6 7 L G e o t e c h n i c a l E n g i n e...

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