2. The piles that are used for protecting structures from ships and floating object is
Correct : C. compaction piles
3. Modern pile driving method was first invented by
Correct : B. nasmyth
4. d) Tension piles
Correct : D. 80 tonnes
5. classes.
Correct : C. two
6. Which of the following piles is a cast-in- situ type of concrete pile?
Correct : B. raymond standard pile
7. Composite piles are suitable for
Correct : B. project above the water table
8. Piles are commonly driven in to ground by means of special device called
Correct : A. pile driver and hammer
9. The types of hammer used for driving piles are
Correct : D. all of the mentioned
10. If a hammer is raised by steam and allowed to fall by gravity on top of the pile, it is called as
Correct : C. single acting hammer
11. Single acting hammers provide an advantage in type of soil.
Correct : A. compact soil and hard soil
12. The maximum load which can be carried by a pile is defined as its
Correct : D. all of the mentioned
13. The allowable load which the pile can carry safely is determined on the basis of
Correct : C. stability of the pile foundation
14. Which of the following are some of the commonly used dynamic formula?
Correct : A. engineers news formula and hiley’s formula
15. When a pile hammer hits the pile, the total driving energy is equal to
Correct : A. weight of hammer times the height of drop
16. The load carrying capacity of a pile can be determined by which of the following
Correct : B. coarse grained soil
17. Dynamic formula does not indicate about
Correct : A. temporary change in soil structure and future settlement
18. The dynamic formula is valueless for which of the following type of soil?
Correct : C. clay soil
19. In dynamic formulae what are the energy losses, that is not accounted?
Correct : A. energy loss due to vibration and energy loss due to heat
20. The greater objection to any of the pile driving formulae is
Correct : A. uncertainty in relation between dynamic and static resistance
21. The static formula is based on the assumption that the ultimate bearing capacity Qup is equal to
Correct : B. rf + rp
22. The efficiency of pile group depends upon
Correct : A. characteristic of pile and spacing of pile
23. In which of the following rule, the value of each pile is reduced by one-sixteenth?
Correct : B. feld’s formulae
24. The bearing capacity of a single pile in clay is mainly due to
Correct : A. friction
25. d) Hiley’s formulae
Correct : B. negative skin friction
26. The area of the pile group along the failure surface is equal to
Correct : C. perimeter × length
27. diameter of the pile.
Correct : C. three
28. The settlement of a group of friction piles can be computed on the assumption that
Correct : B. pile below the lower level is ignored
29. The pile load test should be performed on
Correct : C. all of the mentioned
30. b) Qug = n Qup . ηg
Correct : A. 2.5 and 3
31. For pile in cohesive soil is neglected for individual pile action.
Correct : B. surface area of pile
32. The result of Dutch cone penetration test can be applied to determine
Correct : C. ultimate bearing capacity
33. The separation of Q at any stage of loading into Rp and Rf in cyclic test is based on experimental value found out by
Correct : B. a.f. van weele
34. The test which can be used for separating load carried by the pile is
Correct : A. cyclic load test
35. Explanation: The cyclic load test is
Correct : B. hooke’s law
36. Under-reamed pile foundation is most suitable for type of condition.
Correct : A. seasonal moisture change
37. The under-reamed piles are connected by a beam known as
Correct : A. capping beam and grade beam
38. The maximum spacing of the under-reamed pile should not normally exceed
Correct : B. 2½ meters
39. The load carrying capacity of a under- reamed pile may be determined by
Correct : A. safe load test
40. Explanation: The load carrying capacity of an under-reamed pile may be determined
Correct : A. cast-in-situ piles
41. The spacing of the piles in under-reamed pile foundation depends on which of the following factor?
Correct : A. nature of the ground and type of pile
42. The theory of plasticity pertaining to soils is based on
Correct : A. mohr’s theory
43. On designing retaining walls it is necessary to take care of exerted by soil mass.
Correct : B. lateral pressure
44. The material retained or supported by the retaining structure is called
Correct : C. back fill
45. d) All of the mentioned
Correct : B. rankine
46. The wedge-shaped portion of the backfill tending to move with the wall is called
Correct : C. failure wedge
47. In active stress, the major principal stress σ1 acting on the wall will be in plane.
Correct : B. horizontal
48. Explanation: In an active state, the major principal stress σ1 is vertical and the minor principal stress σ3 is horizontal.
Correct : C. surcharge
49. What will be the co-efficient of passive earth pressure, at a depth of 8m in cohesion less soil sand with an angle of internal friction of 30° when the water rises to the ground level?
Correct : C. 3
50. Originally, Rankine’s theory of lateral earth pressure can be applied to only
Correct : A. cohesion less soil
51. Rankine’s theory of lateral pressure was extended to other soil by
Correct : A. resal and bell
52. Based on the assumptions of Rankine’s theory, the soil mass is
Correct : C. homogeneous
53. Which of the following cases for cohesion less backfill in Rankine’s theory is considered?
Correct : D. all of the mentioned
54. The factor that is responsible for inclination of resultant pressure to the retaining wall is
Correct : A. frictional force
55. If the sand filled behind the retaining wall with saturated water with water, then the possible lateral pressure is
Correct : A. lateral pressure due to submerged weight and lateral pressure due to water
56. The earth pressure at rest exerted on a retaining structure can be calculated using
Correct : B. theory of elasticity
57. Explanation: The earth pressure at rest, exerted on the back of the rigid, unyielding retaining structure, can be calculated using theory of elasticity.
Correct : C. 0.4
58. The expression for K0 as given by Jacky is
Correct : A. k0 = 1 – sin φ
59. What will be the coefficient of earth pressure at rest for a rigid retaining wall, If the backfill consists of cohesion less soil having φ = 26°?
Correct : C. 0.5616
60. The wedge theory of earth pressure is based on the concept of
Correct : B. sliding wedge
61. Which of the following is a basic assumption of the wedge theory?
Correct : D. all of the mentioned
62. The active lateral pressure of intact saturated clays is calculated by assuming
Correct : A. φ=0 and φc=0
63. The forces acting on the trial wedge which is used for finding Rankine’s active earth pressure is
Correct : D. all of the mentioned
64. c) Sliding wedge
Correct : B. hydrostatic
65. In Coulomb’s wedge theory, the angle λ is referred as
Correct : C. critical slip angle
66. The φ-line in wedge theory can also be called as
Correct : B. natural slope line and repose line
67. d) Theoretical calculation
Correct : A. slip-plane
68. The Belli equation at the ground surface is given by
Correct : C. pa=-2c cotα
69. The effect of cohesion in the soil is to
Correct : A. reduce pressure intensity
70. wall to a depth Zo in cohesive soils, then the total net pressure is zero for a depth of
Correct : A. 2zo
71. For an inclined back and surcharge, if P1, is horizontal pressure and W is weight of soil wedge, then the total pressure is given by
Correct : B. p = √p 2 + w 2
72. The lateral pressure for cohesive backfill with surcharge q is
Correct : A. pa=γzcot2 α-2c cotα+qcot2 α
73. Rebhann’s graphical method can be used for the location of
Correct : A. slip plane and total active earth pressure
74. Culmann’s solution can be conveniently used for
Correct : D. all of the mentioned
75. theory.
Correct : A. coulomb’s
76. Which of the following effect of line load can be taken into account by Culmann’s graphical method?
Correct : A. railway track and long wall of a building
77. Earth pressure for retaining walls, of less than 6m are obtained by
Correct : B. graphical method
78. All available graphs and tables, used for finding earth pressure is based on
Correct : A. rankine’s theory
79. Which of the following is not one of the criteria, for design of gravity dam?
Correct : C. the wall must be thinner in section
80. For the design of gravity dam, the minimum value of F(factor of safety) against sliding should be
Correct : B. 1.5
81. The load carrying capacity of a pile can be determined by which of the following methods?