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RCC Structures Design

RCC Structures Design
As per IS : 1343, total shrinkage for a pre-tensioned beam, is

3.5 × 10⁻⁵
3.0 × 10⁻³
3.0 × 10⁻⁵
3.0 × 10⁻²

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RCC Structures Design
As per I.S. 456 - 1978, the pH value of water shall be

Equal to 6
Less than 6
Not less than 6
Equal to 7

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RCC Structures Design
As the percentage of steel increases

Lever arm decreases
Lever arm increases
Depth of neutral axis increases
Depth of neutral axis decreases

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RCC Structures Design
The maximum ratio of span to depth of a slab simply supported and spanning in two directions, is

35
30
25
40

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RCC Structures Design
If a rectangular pre-stressed beam of an effective span of 5 meters and carrying a total load 3840 kg/m, is designed by the load balancing method, the central dip of the parabolic tendon should be

5 cm
20 cm
10 cm
15 cm

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RCC Structures Design
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is

D = W (a² - b²)/4abq
D = W (a² - b²)/8a²bq
D = W (a - b)/4a²bq
D = W (a² - b²)/4a²bq

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