WorksheetsCivil war-Day 35-PWD-Slope stability,bearing capacity,piles
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
The ultimate bearing capacity of a soil is 300 kN/m². The depth of foundation is 1 m and unit weight of soil is 20 kN/m³. Choosing a factor of safety of 2.5, the net safe bearing capacity
a)
100 kN/m2
b)
112 kN/m2
c)
120 kN/m2
d)
140 kN/m2
2.
The effective stress friction angle of saturated, cohesionless soil is 38 degree. The ratio of shear stress to normal effective stress on the failure plane is?
a)
tan(38°)
b)
sin(38°)
c)
cos(38°)
d)
sec(38°)
3.
What type of mode of failure is seen if footing is resting on very dense sand, loaded by transient dynamic loads?
a)
Local shear failure
b)
General shear failure
c)
Punching shear failure
d)
Flexural failure
4.
Terzaghi's bearing capacity factors depends upon
a)
angle of internal friction
b)
cohesion
c)
cohesion and angle of internal friction
d)
density of soil
5.
In load settlement curve, clear failure is found in
a)
punching shear
b)
general shear
c)
local shear
d)
both B and C
6.
For a pure cohesive soil, the friction circle is a
a)
large circle
b)
point
c)
a small circle
d)
None of the above
7.
If a clay slope of height 10 m, the stability number is 0.05, unit weight is 2 kN/m3 and cohesion is 2.5 kN/m2, the critical height of slope is:
a)
10 m
b)
25 m
c)
15 m
d)
20 m
8.
For a base failure, the depth factor Df is
a)
Greater than one
b)
Equal to zero
c)
Between 0 and 1
d)
Less than 0
9.
In case of well foundation, grip length is defined as the
a)
length below the top of the well cap to the cutting edge
b)
length between the bottom of the well cap to the cutting edge
c)
depth of the bottom of the well below the minimum scour level
d)
depth of the bottom of the well below the maximum scour level.
10.
The action of negative skin friction on the pile is to
a)
Reduce the settlement on the pile
b)
Increase the ultimate load on the pile
c)
Maintain the working load on the pile
d)
Reduce the load capacity of the pile
100 %
