RCC Structures Design
An R.C.C. column of 30 cm diameter is reinforced with 6 bars 12 mm φ placed symmetrically along the circumference. If it carries a load of 40,000 kg axially, the stress is

49.9 kg/cm²
100 kg/cm²
175 kg/cm²
250 kg/cm²

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RCC Structures Design
If the depth of actual neutral axis of a doubly reinforced beam

Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
All listed here
Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier
Is equal to the depth of critical neutral axis; the concrete and steel attain their maximum stresses simultaneously

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

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

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