Design reinforced concrete beams for bending per ACI 318-19. Determines required tension and compression reinforcement for rectangular or T-beam sections. Use when sizing longitudinal reinforcement in beams under gravity or lateral loads. Compliant with ACI 318-19 §9.3, §22.2. Free to use. SI and Imperial units supported. No signup required.
Deflection: Δ = 5.9 mm vs L/240 = 25.0 mm (65%) — OK
Results
Flexural DCR
0.86 · PASS
Flexure86%
Shear79%
Deflection65%
φMn285.45 kN·m
Mu245.5 kN·m
As,req1666.75 mm²
As,prov1964 mm²
ρ0.0124
φVn199.14 kN
Vu156.8 kN
δ (immediate)5.9 mm
δ_LT (long-term)16.3 mm
L/240 limit25.0 mm
Ec25743 MPa
d448 mm
kNmmMPa
This calculation is for preliminary design verification only. All results must be independently verified by a licensed professional engineer before use in construction documents.