When calculating secondary compression (Ss) the value H is either the initial height of the clay layer or half the height depending on if the layer exhibits single drainage or double drainage. True False

A soil sample has a compression index of 0.3. If the void ratio e at a stress of 2940 Ib/ft2 is 0.5, compute the settlement of soil stratum 13 ft thick in inches if the stress is increased to 4200 lb/ft2. include fbd

Borings indicate that at a Queens, NY site, the top 6 meters is a loose 2) , sand with a groundwater level at 3 meters below the ground surface. Below the sand is a 10 meter thick soft clay stratum. Assume sand unit weights are ymoist = 14 kN/cubic meter and ysat = 15 kN/cubic meter. Assume clay ysat = 19 kN/cubic meter. Calculate total, pore and effective stresses at 3, 12 and 16 meters deep.