RCC Structures Design
If d is the diameter of a bar, ft is allowable tensile stress and fb, is allowable bond stress, the bond length is given by

π ft .d²/fb
ft .d/4fb
(π/4). (ft .d/fb)
(π/4). (ft .d3/fb)

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

All listed here
Is less than the depth of critical neutral axis, the steel in the tensile zone attains its maximum stress earlier
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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