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RCC Structures Design

RCC Structures Design
If a bent tendon is required to balance a concentrated load W at the centre of the span L, the central dip h must be at least

WL/2P
WL/P
WL/3P
WL/4P

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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

300 cm
100 cm
150 cm
200 cm

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RCC Structures Design
By over-reinforcing a beam, the moment of resistance can be increased not more than

10 %
15 %
20 %
25 %

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RCC Structures Design
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

35
40
30
45

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RCC Structures Design
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is

2WR²/16
3WR²/16
WR²/16
Zero

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RCC Structures Design
If permissible working stresses in steel and concrete are respectively 1400 kg/cm² and 80 kg/cm² and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is

40 cm
39 cm
38 cm
37 cm

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