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RCC Structures Design

RCC Structures Design
The diameter of main bars in R.C.C. columns, shall not be less than

11 mm
12 mm
10 mm
15 mm

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RCC Structures Design
The diameter of the column head support a flat slab, is generally kept

5.0 cm larger than the diameter of the column
4.0 cm larger than the diameter of the column
0.25 times the span length
0.25 times the diameter of the column

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RCC Structures Design
If ‘W’ is the uniformly distributed load on a circular slab of radius ‘R’ fixed at its ends, the maximum positive radial moment at its centre, is

WR²/16
3WR²/16
2WR²/16
None of these

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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

30
45
35
40

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RCC Structures Design
The maximum shear stress (q) in concrete of a reinforced cement concrete beam is

Width/(Lever arm × Shear force)
Shear force/(Lever arm × Width)
Lever arm/(Shear force × Width)
(Shear force × Width)/Lever arm

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RCC Structures Design
An R.C.C. beam of 25 cm width and 50 cm effective depth has a clear span of 6 meters and carries a U.D.L. of 3000 kg/m inclusive of its self weight. If the lever arm constant for the section is 0.865, the maximum intensity of shear stress, is

21.5 kg/cm²
7.6 kg/cm²
8.3 kg/cm²
21.5 kg/cm²

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