RCC Structures Design
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is

30 cm
35 cm
20 cm
25 cm

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RCC Structures Design
A pre-stressed concrete member is preferred because

Removal of cracks in the members due to shrinkage
Large size of long beams carrying large shear force need not be adopted
Its dimensions are not decided from the diagonal tensile stress
All listed here

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