1. An R.C.C. beam of 6 m span is 30 cm wide and has a lever arm of 55 cm. If it carries a U.D.L. of 12 t per m and allowable shear stress is 5 kg/cm2, the beam
Correct : B. Is safe with stirrups
2. According to I.S. : 456, slabs which span in two directions with corners held down, are assumed to be divided in each direction into middle strips and edge strips such that the width of the middle strip, is
Correct : C. Three-fourth of the width of the slab
3. The load stress of a section can be reduced by
Correct : C. Replacing larger bars by greater number of small bars
4. The diameter of the column head support a flat slab, is generally kept
Correct : B. 0.25 times the diameter of the column
5. If ‘W’ is the uniformly distributed load on a circular slab of radius ‘R‘fixed at tsends, the maximum positive radial moment at its centre, is
Correct : D. None of these
6. The maximum ratio of span to depth of a slab simply supported and
Correct : D. 20
7. Pick up the correct statement from the following
Correct : D. All the above
8. In case the factor of safety against sliding is less than 1.5, a portion of slab is constructed downwards at the end of the heel slab, which is known as
Correct : B. A cut-off wall
9. Lapped splices in tensile reinforcement are generally not used for bars of
size larger than
Correct : D. 36 mmdiameter
10. Minimum spacing between horizontal parallel reinforcement of the same
size should not be less than
Correct : A. Onediameter
11. For a ribbed slab
Correct : D. All the above
12. A very comfortable type of stairs is
Correct : D. Open newel
13. Columns may be made of plain concrete if their unsupported lengths do
not exceed their least lateral dimension
Correct : C. Four times
14. The width of the flange of a L-beam, should be less than
Correct : D. Least of theabove
15. To ensure uniform pressure distribution, the thickness of the foundation, is
Correct : C. Decreased gradually towards the edge
16. The maximum permissible size of aggregates to be used in casting the ribs
of a slab, is
Correct : C. 10 mm
17. Pick up the incorrect statement from the following: Tensile reinforcement
bars of a rectangular beam
Correct : C. Are bent down at suitable places to serve asshear reinforcement
18. Steel bars are generally connected together to get greater length than the
standard length by providing
Correct : D. All the above
19. Top bars are extended to the projecting parts of the combined footing of
two columns Ldistance apart for a distance of
Correct : B. 0.1 L from the centre edge ofcolumn
20. For M 150 grade concrete (1:2:4) the moment of resistance factor is
Correct : B. (B) 8.50
21. The minimum thickness of a flat slab is taken
Correct : D. All the above
22. The neutral axis of a T-beam exists
Correct : D. All the above
23. The design of heel slab of a retaining wall is based on the maximum
bending moment due to:
Correct : D. All the above
24. A pre-cast pile generally used, is
Correct : D. Square with corners chamfered
25. The spacing of transverse reinforcement of column is decided by the following consideration.
Correct : D. All the above
26. The self-weight of the footing, is
Correct : A. Not considered for calculating the upward pressure on footing
27. Pick up the incorrect statement from the following:
Correct : D. None of these
28. The transverse reinforcements provided at right angles to the main reinforcement
Correct : D. All the above
29. The pitch of the main bars in a simply supported slab, should not exceed its
effective depth by
Correct : D. Six times
30. High strength concrete is used in pre-stressed member
Correct : D. All the above
31. Enlarged head of a supporting column of a flat slab is technically known as
Correct : C. Capital
32. Thickened part of a flat slab over its supporting column, is technically
known as
Correct : A. Drop panel
33. Side face reinforcement shall be provided in the beam when depth of the
web in a beam exceeds
Correct : B. 75 cm
34. The minimum head room over a stair must be
Correct : C. 210 cm
35. The Young's modulus of elasticity of steel, is
Correct : B. 200 KN/mm2
36. Spacing of stirrups in a rectangular beam, is
Correct : D. Increased at the centre of the beam
37. As per IS : 456, the reinforcement in a column should not be less than
Correct : D. 0.8% and not more than 8% of cross
38. The allowable tensile stress in mild steel stirrups, reinforced cement
concrete, is
Correct : A. 1400 kg/cm2
39. Bottom bars under the columns are extended into the interior of the footing
slab to a distance greater than
Correct : C. 42 diameters from the outer edge of the column
40. The advantage of reinforced concrete, is due to
Correct : D. All the above
41. The thickness of the topping of a ribbed slab, varies between
Correct : B. 5 cm to 8 cm
42. The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is
Correct : C. 35
43. If the loading on a pre-stressed rectangular beam, is uniformly distributed,
the tendon to be provided should be.
Correct : B. Parabolic with convexity downward
44. For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed
Correct : C. 20
45. If depth of slab is 10 cm, width of web 30 cm, depth of web 50 cm, centre to centre distance of beams 3 m, effective span of beams 6 m, the effective flange width of the beam, is
Correct : C. 150 cm
46. The steel generally used in R.C.C. work, is
Correct : B. Mild steel
47. A part of the slab may be considered as the flange of the T-beam if
Correct : D. All the above
48. By over-reinforcing a beam, the moment of resistance can be increased not more than
Correct : D. 25 %
49. According to I.S.: 456, 1978 the thickness of reinforced concrete footing on
piles at its edges, is kept less than
Correct : C. 15 cm
50. The live load to be considered for an accessible roof, is
Correct : C. 150 kg/m2
51. On an absolutely rigid foundation base, the pressure will
Correct : C. Not be uniform
52. The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than
Correct : D. 7 mm
53. For a continuous floor slab supported on beams, the ratio of end span
length and intermediate span length, is
Correct : D. 0.9
54. In a singly reinforced beam
Correct : C. Plane sections transverse to the centre line of the beam before bending remain plane after bending
55. The ratio of the breadth to effective depth of a beam is kept
Correct : B. 0.50
56. A T-beam behaves as a rectangular beam of a width equal to its flange if its
neutral axis
Correct : A. Remains within the flange
57. The width of the rib of a T-beam, is generally kept between
Correct : D. 1/3 to 2/3 of rib depth
58. For the design of a simply supported T-beam the ratio of the effective span
to the overall depth of the beam is limited to
Correct : C. 20
59. If the depth of actual neutral axis of a doubly reinforced beam
Correct : D. All the above
60. The maximum diameter of a bar used in a ribbed slab, is
Correct : D. 22 mm
61. If the diameter of the main reinforcement in a slab is 16 mm, the concrete
cover to main bars is
Correct : D. 16 mm
62. Minimum spacing between horizontal parallel reinforcement of different
sizes, should not be less than
Correct : B. One diameter of thicker bar
63. The diameter of main bars in R.C.C. columns, shall not be less than
Correct : D. 12 mm
64. Dimensions of a beam need be changed if the shear stress is more than
Correct : C. 20 kg/cm2
65. The effective span of a simply supported slab, is
Correct : B. Clear distance between the inner faces of the walls plus twice the thickness of the wall
66. The maximum ratio of span to depth of a cantilever slab, is
Correct : C. 12
67. The horizontal portion of a step in a stairs case, is known as
Correct : D. Tread
68. An R.C.C. roof slab is designed as a two way slab if
Correct : B. The ratio of spans in two directions is less than 2
69. In a combined footing for two columns carrying unequal loads, the maximum hogging bending moment occurs at
Correct : D. A point of zero shear force
70. If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its
slenderness ratio, is
Correct : D. 55
71. The radius of a bar bend to form a hook, should not be less than
Correct : A. Twice thediameter
72. A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is
Correct : C. 16 cm2
73. The amount of reinforcement for main bars in a slab, is based upon
Correct : B. Maximumbendingmoment
74. The diameter of longitudinal bars of a column should never be less than
Correct : D. 12 mm
75. Steel beam theory is used for
Correct : C. Doubly reinforced beams ignoring compressive stress inconcrete
76. In a singly reinforced beam, the effective depth is measured from its compression edge to
Correct : A. Tensile edge
77. The minimum number of main steel bars provided in R.C.C.
Correct : D. All the above
78. If the size of a column is reduced above the floor, the main bars of the
columns, are
Correct : D. All the above
79. In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called
Correct : B. Over reinforced section
80. Distribution of shear intensity over a rectangular section of a beam,
follows:
Correct : C. A parabolic curve
81. Distribution reinforcement in a simply supported slab, is provided to
distribute
Correct : D. All the above
82. Design of R.C.C. simply supported beams carrying U.D.L. is based on the
resultant B.M. at
Correct : B. Mid span
83. An R.C.C. column is treated as long if its slenderness ratio is greater than
Correct : D. 50
84. If the diameter of longitudinal bars of a square column is 16 mm, the
diameter of lateral ties should not be less than
Correct : B. 5 mm
85. The weight of a foundation is assumed as
Correct : C. 10% of wall weight
86. For M 15 mix concrete, according to I.S. specifications, local bond stress, is
Correct : B. 10 kg/cm2
87. As per I.S. 456 - 1978, the pH value of water shall be
Correct : C. Not less than 6
88. If diameter of a reinforcement bar is d, the anchorage value of the hook is
Correct : D. 16d
89. If the sides of a slab simply supported on edges and spanning in two
directions are equal, the maximum bending moment is multiplied by
Correct : D. 0.5
90. The maximum shear stress (qmax) in a rectangular beam is
Correct : B. 1.50 times the average
91. Side face reinforcement shall be provided in the beam when depth of the
web in a beam exceeds Drop panel
Correct : B. 75 cm
92. In a slab, the pitch of the main reinforcement should not exceed its effective depth
Correct : A. Three times
93. The maximum ratio of span to depth of a slab simply supported and
spanning in two directions, is
Correct : C. 35
94. By over-reinforcing a beam, the moment of resistance can be increased not
more than
Correct : D. 25 %
95. For normal cases, stiffness of a simply supported beam is satisfied if the
ratio of its span to its overall depth does not exceed
Correct : C. 20
96. A T-beam behaves as a rectangular beam of a width equal to its flange if its neutral axis
Correct : D. 1/3 to 2/3 of rib depth
97. A ribbed slab is provided for
Correct : D. All the above
98. A column is regarded as long column if the ratio of its effective length and
lateral dimension, exceeds
Correct : B. 15
99. The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than
Correct : C. 30 bardiameters
100. The weight of reinforced concrete, is generally taken as