AS3M3B & C SHEAR/ DEVELOPMENT LENGTHS & STANDARD HOOKS

Minimum Shear Reinforcement (NSCP)

The code requires a minimum amount of shear reinforcement to prevent sudden and brittle failure due to shear load

The shear strength of vertical stirrups

The tension strength of one stirrup times the number of stirrups that interrupt potential cracks approximately 45deg angle from tension steel

twice the beam depth

over a length equal to ______ measured from the face of the supporting column toward mid-span, at both ends of the beam. 

50mm

the first hoop must be placed ____ from the face of supports 

Development of length

the distance that the rebars need to extend back into the support in order to transfer the stresses from rebar to concrete 

standard hooks

-the support will not be able to accommodate the entire development length

-the rebar may be BENT to accommodate the required Id 

Splicing

-no ___ at critical zone

-no ___ where max moments occur (top bar and bottom bar)

NSCP

National Structural Code of the Philippines

beam will fail

no development length at support beam