Question

A wide loaded area carries a net uniformly distributed pressure q = 150 kPa on a soil profile that consists of 3 layers [4 m sand (20 kN/m³) over 2 m clay (18 kN/m³) over 3. m sand]. The water table is at the top of clay layer. The permeability of sand is very large. Cv = 0.50 m2/year; Calpha= 0.05; eo = 1.00. Compute the settlement due to secondary compression after 60 years.

Answer #1

A 70 m diameter tank will be filled with 9 m of water. The site
consists of 20 m of sand overlying 20 m of clay, overlying another
layer of sand. The water table is located at a depth of 10 m. The
unit weights of the sand layers are 18 kN/m3 and the unit weight of
the clay is 16 kN/m3. Other clay properties are given in Table 1.
Please divide the clay layer into 4 or more sublayers...

Using the data in Textbook Problem 8.8:
a. Plot the vertical effective consolidation stress versus void
ratio on both arithmetic and semi-log graphs. For the arithmetic
graph, constrain the vertical axes to 0.55 and 0.95; and the
horizontal to 0 to 1,500 kPa; for the semi-log graph, use the same
vertical axis constraints, but use 10 kPa and 10,000 kPa to ease
interpretation. Plot the data points only, and draw in a smooth
curve by hand. Plot each graph on...

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