190. 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 it 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

A.30

B.35

C.40

D.45

191. The live load to be considered for an inaccessible roof, is

A. Nil

B. 75 kg/m2

C. 150 kg/cm2

D. 200 kg/m2.

192. The live load to be considered for an accessible roof, is

A. Nil

B. 75 kg/m3

C. 150 kg/m2

D. 200 kg/cm2.

193. 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

A. 14 cm2

B.15 cm2

C. 16 cm2

D. 17 cm2

194. An R.C.C. roof slab is designed as a two way slab if

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.

195. The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

A. 1400 kg/cm2

B. 190 kg/cm2

C. 260 kg/cm2

D. 230 kg/cm2.

196. The minimum number of main steel bars provided in R.C.C.

A. rectangular columns is 4

B. circular columns is 6

C. octagonal columns is 8

D. all the above.

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