Structural Load Calculator

STRUCTURAL

Dead · Live · Snow · Wind · Moment · Shear · Design · Code check — all in one view

LRFD ASD

Dead load (DL)

psf

Live load (LL)

psf

Snow load

psf

Wind load

psf

Span

Beam spacing

Section modulus (S)

in³

Moment of inertia (I)

in⁴

Bending stress (F_b)

psi

Modulus of Elasticity (E)

psi

Load combination

—

Allowable stress (F_b)

psi

Deflection limit (L/Δ)

—

Total unfactored —

Factored (LRFD) —

Factored (ASD) —

Load composition (psf) — adjust values and calculate

                        Max moment (M)
                        —
                        lb-ft
                    

                        Max shear (V)
                        —
                        lb
                    

Uniform load (w) — plf

Reaction (R) — lb

M = wL²/8 | V = wL/2

Bending stress — psi

Deflection (Δ) — in

L/Δ ratio — —

Safety margin — %

                    Code compliance
                    —
                    —
                

S_req = M·12/F_b | Δ = 5wL⁴/384EI | ASCE 7 · IBC