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RCC Structures Design

RCC Structures Design
The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is

230 kg/cm²
260 kg/cm²
1400 kg/cm²
190 kg/cm²

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RCC Structures Design
For normal cases, stiffness of a simply supported beam is satisfied if the ratio of its span to its overall depth does not exceed

20
25
10
15

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RCC Structures Design
If the width of the foundation for two equal columns is restricted, the shape of the footing generally adopted, is

Trapezoidal
Triangular
Square
Rectangular

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RCC Structures Design
Though the effective depth of a T-beam is the distance between the top compression edge to the centre of the tensile reinforcement, for heavy loads, it is taken as

1/8th of the span
1/10th of the span
1/16th of the span
1/12th of the span

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RCC Structures Design
‘P’ is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is ‘A’ and sectional modulus is ‘Z’. The minimum stress ‘f’ on the beam subjected to a maximum bending moment ‘M’ is

f = (A/P) - (M/Z)
f = (P/A) - (M/Z)
f = (P/A) - (M/6Z)
f = (P/'- (Z/M)

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RCC Structures Design
The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is

52.5
54.5
53.5
51.5

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