Shear Reinforcement Design
Structural IS 456:2000~2 min
Design shear stirrups for RCC beams as per IS 456:2000 Clause 40.
Formula
Sv = 0.87 × fy × Asv × d / (Vu - τc × b × d)
Input Parameters
From IS 456 Table 19
Results
Nominal Shear Stress (τv)
1.449N/mm²
Shear taken by stirrups (Vus)
85.83kN
Stirrup Area (Asv, 2-legged)
101mm²
Stirrup Spacing (Sv)
229mm
Step-by-Step Method
- 1Calculate nominal shear stress τv = Vu / (b × d).
- 2Compare with permissible shear stress τc from IS 456 Table 19.
- 3If τv > τc, design stirrups: Sv = 0.87 fy Asv d / Vus.
- 4Check maximum spacing: 0.75d or 300 mm (whichever is less).
Engineering Notes
- •Maximum stirrup spacing = 0.75d or 300 mm (IS 456 Cl. 26.5.1.5).
- •Minimum stirrups required even if τv < τc.
Code Reference
IS 456:2000
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