Geotechnical Engineering - Online Test
Q1. The specific gravity of paving bitumen as per IS:73-1992 lies between
Answer : Option C
Explaination / Solution:
No Explaination.
Q2. A field vane shear testing instrument (shown alongside) was inserted completely
into a deposit of soft, saturated silty clay with the vane rod vertical such that the
top of the blades were 500 mm below the ground surface. Upon application of a
rapidly increasing torque about the vane rod, the soil was found to fail when the
torque reached 4 6. Nm. Assuming mobilization of undrained shear strength on
all failure surfaces to be uniform and the resistance mobilized on the surface of
the vane rod to be neglibible, what would be the peak undrained shear strength
(rounded off to the nearest integer value of kPa) of the soil?
Answer : Option B
Explaination / Solution:
No Explaination.
Q3. A sand layer found at sea floor under 20m water depth is characterized with relative
density = 40%, maximum void ratio = 1.0, minimum void ratio = 0.5, and specific
gravity of soil solids = 2.67. Assume the specific gravity of sea water to be 1.03 and the
unit weight of fresh water to be 9.81kN/m3.
What would be the effective stress (rounded off to the nearest integer value of
kPa) at 30m depth into the sand layer?
Answer : Option D
Explaination / Solution:
No Explaination.
Q4. A sand layer found at sea floor under 20m water depth is characterized with relative density = 40%, maximum void ratio = 1.0, minimum void ratio = 0.5, and specific gravity of soil solids = 2.67. Assume the specific gravity of sea water to be 1.03 and the unit weight of fresh water to be 9.81kN/m3.
What would be the change in the effective stress (rounded off to the nearest
integer value of kPa) at 30m depth into the sand layer if the sea water level
permanently rises by 2m ?
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. The results for sieve analysis carried out for three types of sand, P, Q and R, are
given in the adjoining figure. If the fineness modulus values of the three sands are
given as FMP, FMQ and FMR, it can be stated that
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. For a sample of dry, cohesionless soil with friction angle, Φ , the failure plane will
be inclined to the major principal plane by an angle equal to
Answer : Option D
Explaination / Solution:
No Explaination.
