MAHATMA GANDHI
INSTITUTE OF TECHNOLOGY
DEPARTMENT OF CIVIL
ENGINEERING
GEOTECHNICAL
ENGINEERING – II
Assignment – 2
Date of Issue: 8th
April, 2013
Last Date of
Submission: 15th April, 2013
Roll No’s: 10261A0102-136
1.
Explain
Terzhaghi’s Bearing Capacity Analysis to compute Ultimate Bearing Capacity for
General Shear Failure Conditions.
2.
Determine
the safe bearing capacity of rectangular footing 1mX2m founded at a depth of
saturated clay having a unit weight of 20kN/m3. The unconfined
compressive strength of the soil is 100kN/ m2. Use Skempton’s
Equation. Use a factor of safety as 2.5
3.
Describe
the forces acting on a well foundations.
4.
Explain
the following terms
(a)
Ultimate
bearing Capacity
(b)
Net
Ultimate bearing capacity
(c)
Gross
safe bearing capacity
5.
A
continuous footing of width 2m is to be placed at a depth of 1.5m below the
ground surface on a sandy clay soil. The properties of the soil are: c=20kN/m2,
ɸ=300 and γ=18kN/ m3. Calculate the ultimate bearing
capacity for the following cases.
i.
No
effect of water table.
ii.
Water
table at the base of the foundation.
iii.
Water
table at the Ground surface.
Take Nc =30, Nq =18
& Nγ=22
Roll No’s : 10261A0137-160
& 11265A0101-112
6.
Explain
the IS Code Method of finding the bearing capacity of the strip footing for
eccentrically loaded case.
7.
Explain
situations where PILE foundations are preferred and enumerate on classification
of PILE foundations.
8.
The
following results were obtained from a Plate load test conducted on a Sandy
Clay Stratum using a standard plate of 30cm square plate at a depth of 1.5m below ground level. Determine
the allowable load on a 1.8m square footing founded at same depth.
Pressure (kN/ m2) 25 50 100 200 300 400 500
Settlement (mm) 0.4 0.9 1.8 3.6 6.2 9.2 14.0
9.
Explain
the following terms
(a)
Allowable
bearing Pressure
(b)
Safe
bearing Pressure
(c)
Net
Safe bearing capacity
10. Explain the method of conducting
PILE load tests to determine the allowable load on piles.
-ooOoo-
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