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1192077 Pages:3

An undisturbed sample of clay 20mm thickness consolidated 50% in 25 minutes 8
in the laboratory when drainage allowed at top and bottom. The same clay having
thickness 5m exist in the filed with sandy layer at top and bottom of clay. Find

the time required to consolidate 50% and 90% in the field.

Find the factor of safety with respect to cohesion of clay laid ata slope of 1112 5
for a height of 12m. The angle of friction and cohesive strength are respectively

10° and 30 KN/m”. Take the density of soil as 20 kN/m*. The stability number for

the given condition is 0.064.

Explain Swedish circle method 7

The maximum dry density of a soil sample obtained from light compaction testis 8
1.85 g/cc and optimum moisture content is 14%. If the specific gravity of solids

is 2.65, determine the degree of saturation of soil at OMC and the dry density
corresponding to zero air void condition at OMC.

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