61. Minimum pitch of transverse reinforce¬ment in a column is
a) the least lateral dimension of the member
b) sixteen times the smallest diameter of longitudinal reinforcement bar to be tied
c) forty-eight times the diameter of transverse reinforcement
d) lesser of the above three values
Ans: d
62. Maximum distance between expansion joints in structures as per IS : 456 - 1978 is
a) 20 m
b) 30 m
c) 45 m
d) 60 m
Ans: c
63. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D) is less than
a) 1.5
b) 2.0
c) 2.5
d) 3.0
Ans: c
64. Critical section for shear in case of flat slabs is at a distance of
a) effective depth of slab from periphery of column/drop panel
b) d/2 from periphery of column/capital/ drop panel
c) at the drop panel of slab
d) at the periphery of column
Ans:b
65. Minimum thickness of load bearing RCC wall should be
a) 50 mm
b) 100 mm
c) 150 mm
d) 200 mm
Ans:b
66. If the storey height is equal to length of RCC wall, the percentage increase in strength is
a) 0
b) 10
c) 20
d) 30
Ans: b
67. In reinforced concrete footing on soil, the minimum thickness at edge should not be less than
a) 100 mm
b) 150 mm
c) 200 mm
d) 250 mm
Ans:b
68. The slab is designed as one way if the ratio of long span to short span is
a) less than 1
b) between 1 and 1.5
c) between 1.5 and 2
d) greater than 2
Ans: d
69. Ratio of permissible stress in direct compression and bending compression is
a) less than 1
b) between 1 and 1.5
c) between 1.5 and 2.0
d) greater than 2
Ans: a
70. A higher modular ratio shows
a) higher compressive strength of con-crete
b) lower compressive strength of concrete
c) higher tensile strength of steel
d) lower tensile strength of steel
Ans:b
71. The average permissible stress in bond for plain bars in tension is
a) increased by 10% for bars in compression
b) increased by 25% for bars in compression
c) decreased by 10% for bars in compression
d) decreased by 25% for bars in com-pression
Ans:b
74. In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by
a) 10%
b) 20%
c) 30%
d) 40%
Ans: d
75. The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone
a) compressive stress
b) shear stress
c) bond stress
d) tensile stress
Ans: c
76. Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the centre of slab bearing where x is equal to
a) 1/3
b) 1/5
c) 1/7
d) 1/10
where 1 is the span
Ans:c
77. When shear stress exceeds the permissible limit in a slab, then it is reduced by
a) increasing the depth
b) providing shear reinforcement
c) using high strength steel
d) using thinner bars but more in number
Ans: a
78. If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are
a) 3.0 m and 1.5 m
b) 1.5 m and 3.0 m
c) 3.0 m and 3.0 m
d) 1.5 m and 1.5 m
Ans:c
79. For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory
a) is always less than 1
b) is always greater than 1
c) can be more than 1
d) can be less than 1
Ans: a
80. The permissible diagonal tensile stress in reinforced brick work is
a) about 0.1 N/mm2
b) zero
c) 0.3 N/mm2 to 0.7 N/mm2
d) about 1.0 N/mm2
Ans: a
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a) the least lateral dimension of the member
b) sixteen times the smallest diameter of longitudinal reinforcement bar to be tied
c) forty-eight times the diameter of transverse reinforcement
d) lesser of the above three values
Ans: d
62. Maximum distance between expansion joints in structures as per IS : 456 - 1978 is
a) 20 m
b) 30 m
c) 45 m
d) 60 m
Ans: c
63. A continuous beam is deemed to be a deep beam when the ratio of effective span to overall depth (1/D) is less than
a) 1.5
b) 2.0
c) 2.5
d) 3.0
Ans: c
64. Critical section for shear in case of flat slabs is at a distance of
a) effective depth of slab from periphery of column/drop panel
b) d/2 from periphery of column/capital/ drop panel
c) at the drop panel of slab
d) at the periphery of column
Ans:b
65. Minimum thickness of load bearing RCC wall should be
a) 50 mm
b) 100 mm
c) 150 mm
d) 200 mm
Ans:b
66. If the storey height is equal to length of RCC wall, the percentage increase in strength is
a) 0
b) 10
c) 20
d) 30
Ans: b
67. In reinforced concrete footing on soil, the minimum thickness at edge should not be less than
a) 100 mm
b) 150 mm
c) 200 mm
d) 250 mm
Ans:b
68. The slab is designed as one way if the ratio of long span to short span is
a) less than 1
b) between 1 and 1.5
c) between 1.5 and 2
d) greater than 2
Ans: d
69. Ratio of permissible stress in direct compression and bending compression is
a) less than 1
b) between 1 and 1.5
c) between 1.5 and 2.0
d) greater than 2
Ans: a
70. A higher modular ratio shows
a) higher compressive strength of con-crete
b) lower compressive strength of concrete
c) higher tensile strength of steel
d) lower tensile strength of steel
Ans:b
71. The average permissible stress in bond for plain bars in tension is
a) increased by 10% for bars in compression
b) increased by 25% for bars in compression
c) decreased by 10% for bars in compression
d) decreased by 25% for bars in com-pression
Ans:b
74. In working stress design, permissible bond stress in the case of deformed bars is more than that in plain bars by
a) 10%
b) 20%
c) 30%
d) 40%
Ans: d
75. The main reason for providing number of reinforcing bars at a support in a simply supported beam is to resist in that zone
a) compressive stress
b) shear stress
c) bond stress
d) tensile stress
Ans: c
76. Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the centre of slab bearing where x is equal to
a) 1/3
b) 1/5
c) 1/7
d) 1/10
where 1 is the span
Ans:c
77. When shear stress exceeds the permissible limit in a slab, then it is reduced by
a) increasing the depth
b) providing shear reinforcement
c) using high strength steel
d) using thinner bars but more in number
Ans: a
78. If the size of panel in a flat slab is 6m x 6m, then as per Indian Standard Code, the widths of column strip and middle strip are
a) 3.0 m and 1.5 m
b) 1.5 m and 3.0 m
c) 3.0 m and 3.0 m
d) 1.5 m and 1.5 m
Ans:c
79. For a slab supported on its four edges with corners held down and loaded uniformly, the Marcus correction factor to the moments obtained by Grashoff Rankine's theory
a) is always less than 1
b) is always greater than 1
c) can be more than 1
d) can be less than 1
Ans: a
80. The permissible diagonal tensile stress in reinforced brick work is
a) about 0.1 N/mm2
b) zero
c) 0.3 N/mm2 to 0.7 N/mm2
d) about 1.0 N/mm2
Ans: a
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