RCC Structures Design
A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm² steel. If the modular ratio (m) is 15, the depth of the neutral axis, is

30 cm
35 cm
25 cm
20 cm

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RCC Structures Design
Pick up the assumption for the design of a pre-stressed concrete member from the following:

All listed here
A transverse plane section remains a plane after bending
Variation of stress in reinforcement due to changes in external loading is negligible
During deformation limits, Hook's law is equally applicable to concrete as well as to steel

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RCC Structures Design
Bottom bars under the columns are extended into the interior of the footing slab to a distance greater than

42 diameters from the centre of the column
42 diameters from the outer edge of the column
24 diameters from the centre of the column
42 diameters from the inner edge of the column

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