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Timber Span Lookup

Indicative — not for construction. These are ballpark single-span figures for estimating member counts only. Final sizing must come from the current AS1684 span table supplement or a structural engineer, for your timber grade, load, wind and spacing.

Member Grade Size (mm) Spacing (mm)

Official free sources: WoodSolutions, and your timber supplier's AS1684 span table supplement. Material calculators →