Wood Beam Design (NDS 2024)

Design sawn-lumber beams per NDS 2024: flexure, shear, bearing, beam stability (CL), and deflection. Built-in database with 4 species, 3 grades, 14 sizes.

NDS 2024ASD BendingBeam Stability CLDeflection Check

Calculation results are decision-support tools. The design engineer must review and verify all results independently.

Species & Grade

Wood Species

Lumber Grade

Reference Design Values (NDS Supplement)

F_b = 900 psi | F_v = 180 psi | F_c⊥ = 625 psi | E = 1.6M psi

Lumber Size

Size Selection

Lumber Designation

Span & Geometry

Span (ft)

Tributary Width (ft)

Support Condition

Bearing Length (in)

Applied Loads

Dead Load (psf)

Live Load (psf)

Snow Load (psf)

Wind Load (psf)

Service Conditions & Factors

Moisture Condition

Temperature

Load Duration Factor (CD)

Auto selects CD from the governing ASD load combination

Repetitive member (≥ 3 members, spacing ≤ 24" o.c., Cr = 1.15)Incised treatment (Ci factors apply)

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Wood Beam Design (NDS 2024)

Select species/grade, lumber size, loads, and conditions, then click Design Wood Beam.