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WorksheetsSoil Mechanics
Total questions: 15
Worksheet time: 13mins
Select the incorrect statement. Effective angle of shearing resistance
increases as the size of particles increases
increases as the soil gradation im-proves
is limited to a maximum value of 45 degrees
is rarely more than 30 degrees for fine grained soil
In a triaxial compression test when drainage is allowed during the first stage (i.e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as
consolidated drained test
consolidated undrained test
unconsolidated drained test
unconsolidated undrained test
These are materials that are derived from the weathering of rocks.
(a)
The original form of this system was proposed by Casagrande in 1942 for use in the air-field construction works undertaken by the Army Corps of Engineers during World War II. In cooperation with the U.S. Bureau of Reclamation, this system was revised in 1952. At present, it is used widely by engineers (ASTM Test Designation D-2487).
MIT
AASHTO
USDA
USCS
The total and effective stresses at a depth of 5m below the top level of water in a swimming pool are respectively
zero and zero
0.5 kg/cm^2 and zero
0.5 kg/cm^2 and
0.5 kg/cm^2
1.0 kg/cm^2 and
0.5 kg/cm^2
The water content of soil, which represents the boundary between plastic state and liquid state, is knows as
liquid limit
plastic limit
shrinkage limit
plasticity index
The shear strength of a soil is ____
is directly proportional to the angle of internal friction of the soil
is inversely proportional to the angle of internal friction of the soil
decreases with increase in normal stress
decreases with decrease in normal stress
In a triaxial compression test when drainage is allowed during the first stage (i.e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known is
consolidated drained test
consolidated undrained test
unconsolidated drained test
unconsolidated undrained test
In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on
horizontal plane only
vertical plane only
both horizontal and vertical planes
all planes except horizontal and vertical planes
Which of the following methods is most accurate for the determination of the water content of soil?
oven drying method
sand bath method
calcium carbide method
pycnometer method
If the water content of a fully saturated soil mass is 100%, then the voids ratio of the sample is
less than specific gravity of soil
equal to specific gravity of soil
greater than specific gravity of soil
independent of specific gravity of soil
When the degree of saturation is zero, the soil mass under consideration represents
one phase system
two phase system with soil and air
two phase system with soil and water
three phase system
If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are
1.0 and 0.0
0.0 and 1.0
0.5 and 1.0
1.0 and 0.5
Residual soils are formed by
glacier
wind
water
none of the above
A fully saturated soil is said to be
one phase system
two phase system with soil and air
two phase system with soil and water
three phase system
