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WorksheetsCivil war-Day 34-PWD-Site investigation,shear strength of soil
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
During a sampling operation, the drive sampler is advanced 600 mm and length of sample recovered is 450 mm. The recovery ratio is
a)
0.875
b)
0.75
c)
0.565
d)
0.45
2.
Undisturbed soil samples are required for conducting test for
a)
Shrinkage limit
b)
Specific gravity
c)
Particle size distribution
d)
Coefficient of consolidation
3.
The Standard Penetration Test is useful to find the
a)
shear strength of soft clay
b)
shear strength of sand
c)
consistency of clay
d)
sensitivity of clay
4.
The depth of exploration for a frictional pile is
a)
1.5 times width from the lower third point
b)
2 times the width of pile
c)
1.5 times the width from the bearing level
d)
1.5 times width from the lower two third point
5.
Auger boring is used in __________ type of soil.
a)
Cohesion less soil
b)
Cohesive soil
c)
Coarse-grained soil
d)
Pervious soil
6.
An unconfined compression test yields a strength of 0.1 N/mm². If the failure plane is inclined at 50° to the horizontal, what are the values of shear strength parameters?
a)
10 degree ,0.042 N/mm²
b)
20 degree ,0.042 N/mm²
c)
10 degree ,0.42N/mm²
d)
20 degree ,0.42 N/mm²
7.
In a triaxial shear test, a sample of C-ɸ soil failed along a failure plane making angle of 45º with the horizontal. The value of cohesion for the soil will be represented by, Where σ1 and σ3 are major principle stress and confining stress respectively
a)
C = (σ1+σ3)/2
b)
C = (σ1+σ2)/2
c)
C = (σ1-σ3)/2
d)
C = (σ1+σ3)
8.
Which of the following soil types is most likely to be subjected to liquefaction under seismic forces?
a)
Fractured rocky strata
b)
Soft saturated clays
c)
Murum
d)
Loose saturated sands
9.
In a Mohr's diagram, a point above Mohr's envelope indicates
a)
Imaginary condition
b)
Safe condition
c)
Imminent failure condition
d)
Condition of maximum obliquity
10.
If the cohesion of a pure clay in a UCC test is 10 MPa, the unconfined compressive strength of clay will be
a)
5 MPa
b)
10 MPa
c)
20 MPa
d)
40 MPa
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