Reinforcement Ratio Calculator

Calculate steel reinforcement ratio and verify min/max per ACI 318 for beams and slabs

Input Parameters

Results

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ρ (rho)
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ρ min
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ρ max
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Status

Reference

ρ = As/(b×d) ρ_min = max(3√f'c/fy, 200/fy) ρ_max = 0.75 × 0.85 × β1 × f'c/fy