What is the lapping zone of beam rebar at top and bottom...? Why do we provide bent up bars in slab ? What is the lapping zone of column reinforcement ? And why it is provided in that zone ? Why we bend the beams stirrups hooks to 135 degree angle ?

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Explaining the lapping zone of beam and column reinforcement, and the purpose of bent up bars and stirrup hooks in slab and beam respectively.

The lapping zone of beam rebar at top and bottom is the area where the two bars overlap to provide continuity and strength.
Bent up bars are provided in slab to resist the shear force and prevent cracking.
The lapping zone of column reinforcement is the area where the bars overlap to provide continuity and strength.
Stirrup hooks are bent to 135 degree angle to ensure proper anchorage and prevent slipping of the stirrups.

What is the lapping zone of beam rebar at top and bottom...? Why do we provide bent up bars in slab ? What is the lapping zone of column reinforcement ? And why it is provided in that zone ? Why we bend the beams stirrups hooks to 135 degree angle ?

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