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RCC Structures Design

RCC Structures Design
If the average bending stress is 6 kg/cm² for M 150 grade concrete, the length of embedment of a bar of diameter d according to I.S. 456 specifications, is

38 d
28 d
48 d
58 d

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RCC Structures Design
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is

25 cm
30 cm
20 cm
35 cm

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RCC Structures Design
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

100 cm
300 cm
200 cm
150 cm

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RCC Structures Design
If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

(π/4). (ft .d/fb)
ft .d/4fb
(π/4). (ft .d3/fb)
π ft .d²/fb

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RCC Structures Design
The weight of a foundation is assumed as

5% of wall weight
12% of wall weight
7% of wall weight
10% of wall weight

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RCC Structures Design
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

Is safe in shear
Needs revision of section
Is safe with stirrups and inclined bars
Is safe with stirrups

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