Question

The section in which concrete is not fully stressed to its permissible value when stress in steel reaches its maximum value, is called

Answer 1

The correct answer is under reinforcement section.

During this the steel reaches its yield stress before cement. This mostly occur by the excessive deflection of the beam, and by formation of large cracks.  This situation provides enough alarm to the resident to leave building before collapsing completely.  Strain of concrete is 0.0035 while steel has value between 0.20 to 0.25.