rcc structures design Mcqs
201. If diameter of a reinforcement bar is d, the anchorage value of the hook is_______________?
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A. 12d

B. 4d

C. 16d

D. 8d

202. A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is___________________?
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A. 40

B. 35

C. 45

D. 30

203. Minimum spacing between horizontal parallel reinforcement of different sizes, should not be less than________________?
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A. Twice the diameter of thinner bar

B. One diameter of thicker bar

C. None of these

D. One diameter of thinner bar

204. intensity of pressure at a depth h on a block of earth weighing w per unit If p1 is the vertical______________?
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A. wh (1 sin )/(1 + ) )

B. wh (1 tan )/(1 +

C. w (1 cos )/h (1 + sin )

D. wh (1 cos )/(1 + ) p2 is

205. If the size of a column is reduced above the floor, the main bars of the columns, are_____________?
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A. Stopped just below the floor level and separate lap bars provided

B. Continued up

C. All the above

D. Bent inward at the floor level

206. In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________?
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A. (m + c)/t = n/(d + n)

B. (t + c)/n = (d + n)/n

C. mc/t = (d n)/t

D. mc/t = n/(d n)
207. Pick up the correct statement from the following?
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A. A pile is a slender member which transfers its load by friction

B. A pile is a slender member which transfers the load through its lower end on a strong strata

C. A pile is a cylindrical body of concrete which transfers the load at a depth greater than its width

D. A pile is a slender member which transfers its load to the surrounding soil
208. An R.C.C. roof slab is designed as a two way slab if________________?
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A. It supports live loads in both directions

B. The ratio of spans in two directions is less than 2

C. The slab is continuous over two supports

D. The slab is discontinuous at edges

209. If K is a constant depending upon the ratio of the width of the slab to its effective span l, x is the distance of the concentrated load from the nearer support, bw is the width of the area of contact of the concentrated load measured parallel to the supported edge, the effective width of the slab be is_______________?
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A. Kx (1 + x/l) + bw

B. K/x (1 + x/d) + bw

C. Kx (1 x/l) + bw

D. All the above

210. In a simply supported slab, alternate bars are curtailed at________________?
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A. 1/5th of the span

B. 1/6th of the span

C. 1/4th of the span

D. 1/7th of the span
211. 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________________?
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A. 6 mm

B. 4 mm

C. 7 mm

D. 5 mm

212. foundation is assumed as The weight of a_____________?
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A. 12% of wall weight

B. 7% of wall weight

C. 5% of wall weight

D. 10% of wall weight
213. The thickness of the topping of a ribbed slab, varies between________________?
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A. 8 cm to 10 cm

B. 3 cm to 5 cm

C. 12 cm to 15 cm

D. 5 cm to 8 cm
214. A circular slab subjected to external loading, deflects to form a_________________?
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A. Ellipsoid

B. Paraboloid

C. None of these

D. Semi-hemisphere

215. If longitudinally spanning stairs are casted along with their landings, the maximum bending moment per metre width, is taken as___________________?
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A. wl/10

B. wl/4

C. wl/8

D. wl/12

216. carrying a uniformly distributed load per metre length is suspended at the A pile of length centre and from other two points 0.15 L from either end ; the maximum hogging moment will be_______________?
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A. WL/90

B. WL/30

C. WL/15

D. WL/60

217. The width of the rib of a T-beam, is generally kept between_______________?
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A. 1/7 to 1/3 of rib depth

B. 1/2 to 3/4 of rib depth

C. 1/3 to 2/3 of rib depth

D. 1/3 to 1/2 of rib depth

218. In a cantilever retaining wall without a heel slab______________?
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A. Thickness of the stem is kept same throughout

B. All the above

C. Width of the base slab is kept 0.7 time the total height of the wall

D. Base slab is made 10 cm thicker than the stem

219. In testing a pile by load test, pile platform is loaded with one and half times the design load and a maximum settlement is noted. The load is gradually removed and the consequent rebound is measured. For a safe pile, the net settlement (i.e. total settlement minus rebound) per tonne of test load should not exceed________________?
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A. 20 mm

B. 10 mm

C. 15 mm

D. 25 mm
220. On piles, the drop must be at least_______________?
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A. 100 cm

B. 80 cm

C. 140 cm

D. 120 cm
221. The number of treads in a flight is equal to_______________?
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A. None of these

B. Risers plus one

C. Risers minus one

D. Risers in the flight

222. By over-reinforcing a beam, the moment of resistance can be increased not more than________________?
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A. 25 %

B. 15%

C. 10%

D. 20%

223. The effective width of a column strip of a flat slab, is_______________?
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A. Diameter of the column

B. Half the width of the panel

C. One-fourth the width of the panel

D. Radius of the column

224. Distribution of shear intensity over a rectangular section of a beam, follows_________________?
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A. A circular curve

B. A straight line

C. An elliptical curve

D. A parabolic curve
225. With usual notations the depth of the neutral axis of a balanced section, is given by______________?
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A. t/mc = (d + n)/n

B. mc/t = (d n)/n

C. mc/t = n/ (d n)

D. t/mc = (d n)/n

226. For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is____________________?
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A. 0.7

B. 0.8

C. 0.9

D. 0.6

227. The diameter of main bars in R.C.C. columns, shall not be less than________________?
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A. 8 mm

B. 6 mm

C. 10 mm

D. 12 mm