Question

The ultimate consolidation of a 13-ft thick single-drained clay
layer (c_{v} = 0.1 ft^{2}/day) was calculated to be
0.813 feet.

a. What is the average degree of consolidation for the clay layer when the settlement is 2 inches?

b. If the average value for cv for the pressure range is 0.003
cm^{2}/second how long will it take for 50% settlement to
occur? (be careful on the units)

c. If the 17 ft clay layer is drained on one side, how long will it take for 50 percent consolidation to occur?

Answer #1

A 10-ft-thick silty clay layer is subjected to a load that
results in total primary consolidation settlement of 0.85 inches.
The clay is sandwiched between two sand layers and has an initial
void ratio of 0.76, a coefficient of compression of 0.45, a
coefficient of recompression of 0.07 and a coefficient of
consolidation of 0.034 in2 /year. Calculate the settlement at the
end of 2 years and determine the time in days for 0.60 inches of
settlement.

A 10-ft-thick silty clay layer is subjected to a load that
results in total primary consolidation settlement of 0.85 inches.
The clay is sandwiched between two sand layers and has an initial
void ratio of 0.76, a coefficient of compression of 0.45, a
coefficient of recompression of 0.07 and a coefficient of
consolidation of 0.034 in2/year. Calculate the settlement at the
end of 2 years and determine the time in days for 0.60 inches of
settlement.

A 10 m layer of sand overlies a 6 m layer of saturated clay,
below which there is impermeable rock. For the clay, cv = 4.4
m2/yr. The ultimate consolidation settlement for a given surface
loading was determined to be sc = 18 cm.
a) How long will it take for 95% of the consolidation settlement
to be completed?
b) What will be the magnitude of settlement 1 year after the
load is applied?
c) How long will it take...

Consider a clay layer that is 1 m thick. The clay has a
compression index of 0.35, a swell index of 0.07, a permeability of
4 x 10-7 cm/sec, a preconsolidation pressure of 172 kPa and a
coefficient of consolidation of 2.7 x 10-4 cm2/min. The initial
effective stress at the midpoint of the layer is 140 kPa, and the
soil has a void ratio of 1.01. The stress is increased to 200 kPa.
The soil is drained above and...

A layer of clay 2 meters thick will settle 44 mm under an
applied load. Calculate how long it will take to achieve 30% of the
total settlement if the coefficient of consolidation is 0.00026
cm2/s and the clay layer can drain from the top only.
Provide your answer in units of days as a whole number.

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 13 minutes ago

asked 13 minutes ago

asked 21 minutes ago

asked 25 minutes ago

asked 27 minutes ago

asked 44 minutes ago

asked 49 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago