Foundation-engineering Questions Set 1:
The earth pressure for the design of bridge abutments is taken as
Solution:
The type of piles used to protect structures from ships and floating objects is ______.
Solution:
In an unconfined compression test on stiff clay, if the failure plane made an angle of 53 degrees to the horizontal, what would be the angle of shearing resistance? (in degrees)
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A test plate of 40 cm2 settles by 12 mm in a clayey soil. If a footing 2 m x 2 m is constructed at the same depth, then the settlement under the same load intensity is
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If a strip footing is resting on the surface of a purely clayey soil deposit, and the width of the footing is doubled, the ultimate bearing capacity of the soil
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A consolidated drained triaxial test was conducted on a granular soil. At failure, the ratio of major principal stress to minor principal stress (σ1/σ2) was 4. The value of the angle of internal friction (φ) for the soil is (in degrees):
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A vertical cut is to be made in a soil mass having cohesion c, angle of internal friction Φ, and unit weight γ. Considering Ka and Kp as the coefficients of active and passive earth pressures, respectively, the maximum depth of unsupported excavation is
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During soil exploration, a sand layer of small thickness situated at the middle of a deep clayey layer remained unnoticed. If the time stipulated for consolidation of the clayey layer up to a certain degree under double drainage condition is 't', then the actual time for consolidation up to the same degree will be:
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A precast concrete pile is driven with a 50kN hammer falling through a height of 1 m with an efficiency of 0.6 . The set value observed is 4mm per blow and the
combined temporary compression of the pile, cushion and the ground is 6 mm. As per Modified Hiley Formula, the ultimate resistance of the pile is
Solution:
Match the items of List–I with List–II and select the correct answer.
List–I
P. Modulus of subgrade reaction
Q. Relative density and strength
R. Skin friction and point bearing resistance
S. Elastic constants
List–II
1. Cyclic pile load test
2. Pressure meter test
3. Plate load test
4. Standard penetration test
5. Dynamic cone penetration test
Solution:
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