RCC Structures Design
A part of the slab may be considered as the flange of the T-beam if

All of the listed here
It is built integrally with the beam
Flange has adequate reinforcement transverse to beam
It is effectively bonded together with the beam

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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
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
All listed here

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