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Beam Deflection & Bending Stress Calculator

Calculate maximum deflection, bending stress, and compare against L/300 serviceability limit for common beam loading conditions. Based on Euler–Bernoulli beam theory.

Input Parameters



Results
Moment of Inertia (I)4166666.67 mm⁴
Max Bending Moment (M)5.000 kN·m
Max Deflection (δ)2.000 mm
L/300 Limit6.667 mm
Serviceability Check✅ PASS — δ < L/300
Max Bending Stress (σ)60.00 MPa
Elastic Modulus (E)200,000 MPa
Note: Results are based on linear elastic theory (Euler–Bernoulli). For I-beam sections, flange thickness is used to approximate the web. Always verify against AISC or AS 4100 for structural design. Consult a licensed structural engineer for load-bearing applications.