DESIGN FOR SHEAR REINFORCEMENT
WSD
Procedure:
(Note: This procedure is a simplified
version I summarized of the theoretical computation to be used for
NIA structural designs. Please check with your conventional method.)
1. Compute for actual shear at a
distance d from the support.
(d being the total height of the beam
where the critical shear is)
2. Compute for shear strength of
concrete alone.
Vc = 0.29 bd√(fc')
3. If Vc < Va, Compute for required
steel strength
where Va = actual shear at critical
section
4. Vs = Va – Vc
where Vs = required strength of steel
5. Spacing, s = Av.fs.d/Vs
6. If no stirrup is required, smax =
Av.fs/3.5b or 0.30m
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