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1) 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
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2) 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
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3) 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
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4) 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%
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5) Half of the main steel in a simply supported slab is bent up near the support at a distance of x from the center of slab bearing where x is equal to________________? a. 1/3 b. 1/5 c. 1/7 d. 1/10
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6) 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
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7) 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
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8) 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
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9) 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
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10) The limits of percentage p of the longitudinal reinforce-ment in a column is given by_____________? a. 0.15% to 2% b. 0.8% to 4% c. 0.8% to 6% d. 0.8% to 8%
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11) The minimum cover to the ties or spirals should not be less than________________? a. 15 mm b. 20 mm c. 25 mm d. 50mm
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12) Maximum percentage reinforcement in case of slabs is limited to___________________? a. 2 b. 4 c. 6 d. 8
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13) The diameter of ties in a column should be_______________? a. more than or equal to one fourth of diameter of main bar b. more than or equal to 5 mm c. more than 5 mm but less than one-fourth of diameter of main bar d. more than 5 mm and also more than one-fourth of diameter of main bar
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14) The minimum diameter of longitudinal bars in a column is________________? a. 6 mm b. 8 mm c. 12 mm d. 16 mm
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15) For the design of retaining walls, the minimum factor of safety against overturning is taken as_____________? a. 1.5 b. 2.0 c. 2.5 d. 3.0
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16) The load carrying capacity of a helically reinforced column as compared to that of a tied column is about________________? a. 5% less b. 10% less c. 5% more d. 10% more
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17) Due to circumferential action of the spiral in a spirally reinforced column________________? a. capacity of column is decreased b. ductility of column reduces c. capacity of column is decreased but ductility of column increases d. both the capacity of column and ductility of column increase
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18) Which of the following R.C. retaining walls is suitable for heights beyond 6m ? a. L-shaped wall b. T-shaped wall c. counterfort type d. all of the above
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19) The temperature reinforcement in the vertical slab of a T-shaped R.C. retaining wall is______________? a. not needed b. provided equally on inner and front faces c. provided more on inner face than on front face d. provided more on front face than on inner face
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20) 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
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