Advanced Foundation Engineering Mid - I, September - 2014

1.The minimum depth for all foundations below the natural ground level is
  • 500 mm
  • 1200mm
  • 250mm
  • 100mm
Answer: A
2.Net allowable bearing pressure is
  • Net safe bearing capacity
  • net safe settlement pressure
  • smaller of A and B
  • none of the above
Answer: C
3.The Bearing capacity of a soil depends upon
  • Grain of the soil
  • size of the footing
  • shape of the footing
  • all of these
Answer: D
4.As per IS code maximum permissible differential settlement on clay soil is
  • 25mm
  • 40mm
  • 65mm
  • 100mm
Answer: B
5.When the water table is close to the ground surface the bearing capacity of a soil is reduced to
  • One-fourth
  • one-half
  • two-third
  • three-fourth
Answer: B
6.The load carrying capacity of a foundation if it is not back filled is
  • Increased
  • decreased
  • no effect
  • zero
Answer: A
7.The failure of a pile foundation is due to
  • General shear
  • local shear
  • mixed shear
  • punching shear
Answer: D
8.The diameter of the under reamed bulb is generally ____ times the stem diameter. Choose the correct range
  • 2 to 3
  • 1.25 to 1.50
  • 1 to 2
  • 3 to 4
Answer: A
9.When the number of bulbs is increased from one to two the capacity of the pile increased by about
  • 100%
  • 75%
  • 50%
  • 25%
Answer: C
10.The minimum number of piles needed in a group of piles to support a column is
  • One
  • two
  • three
  • four
Answer: C
11.The Thickness of bearing plate in plate load test should not less than ____________ mm.
Answer: 25mm
12.Meyerhof’s equation applicable for __________ type of foundations.
Answer: Shallow and deep foundation
13.The bearing capacity of a footing in pure clay soils is independent of _____________
Answer: Width of footing
14.According to Meyerhof expression for N ___________________________
Answer: N = (Nq - 1)tan(1.4Ф)
15.Under-reamed piles are usually ______________ types of piles.
Answer: Bored piles
16.Negative skin friction occurs when ____________
Answer: The surrounding soils settles more than the pile
17.The settlement of a group of friction piles as compared to that of a single pile is ___________
Answer: More
18.The seating load for plate load test is _____________
Answer: 7KN/M2
19.The bearing capacity of frozen soils depends on___________
Answer: Air content
20.The size of plate recommend for gravel and dense sandy soils is _________
Answer: 30cm2