Question

what is the difference between singly rcc and the doubly rcc

Answer 1

when bar is provide in compression only it is called singly reinforced beam .bar is provide in compression and tension jone it is called doubly rein forced beam.

Answer 2

if the reinforcement is provide in only compression side is called singly reinforcement,if the reinforcement is provide in both compression and tension side is called doubly reinforcement.

Answer 3

Singly reinforced cement concrete are those sections in which longitudinal bars are provided in the tension zone of the section.
Doubly reinforced cement concrete are those sections in which longitudinal bars are provided in the tension zone as well as in the compression zone. Longitudinal bars in the compression zone are provided to carry the extra bending moment on the section. Doubly RCCs are used due to restrictions in beam width,eccentric loadings and in continuous beams.