Foundation Engineering (2180609) MCQs

MCQs of Pile foundations

Showing 51 to 59 out of 59 Questions
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51.
Enlarging the stem of bore hole at the depth is done by using________
(a) Spiral auger
(b) Under-reamer
(c) Boring guide
Answer:

Option (b)

52.
In the process of pile foundation, boring is done with the help of _________
(a) Boring guide
(b) Under-reamer
(c) Spiral auger
(d) Pile beams
Answer:

Option (c)

53.
Routine tests are usually carried out on _________
(a) Test piles
(b) Working piles
Answer:

Option (b)

54.
The depth of the bore hole is checked at _________ before insertion of the under-reamer.
(a) At the start and At the end
(b) Each time
Answer:

Option (a)

55.
Which of the following stages are involved in the construction of under reamed piles?
(a) Concreting of piles and Boring by auger
(b) Concreting the funnel
Answer:

Option (a)

56.
The equipment required for construction of a under-reamed pile is________
(a) Auger boring guide
(b) Spiral auger
(c) Concreting funnel
(d) All of the mentioned
Answer:

Option (d)

57.
The load-carrying capacity of an under-reamed pile may be determined by _________
(a) Safe load test
(b) Penetration test
(c) Pile load test
(d) Cyclic load test
Answer:

Option (a)

58.
Negative skin friction on piles
(a) Is caused due to relative settlement of the soil
(b) Is caused in soft clays
(c) Decreases the pile capacity
(d) All of the above
Answer:

Option (d)

59.

A 12 m long 300 mm diameter pile is driven in a uniform deposit of sand (∅ = 40°). the water table is at a great depth and not likely to rise. The average dry weight of sand is 18 kN/m3. Using Nq = 135 calculate the safe load capacity of the pile with F. O. S. 2.5.Assume K=2.0,δ = 30°.

(a)

700 kN
(b)

800 kN
(c)

835 kN
(d)

860 kN
Answer:

Option (c)

Showing 51 to 59 out of 59 Questions
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