Upcoming Changes for Structural Timber

Doug Gaunt ensis – the join forces of CSIRO and Forest Research

1. NZS3603 Timber Structures Standard

• Design of larger timber structures
• Used as a basis for NZS3604.
• Contains design stresses & procedures

2. NZS3604 Timber Framed Buildings

• Design of timber houses.
• Based on No 1Framing (MoE = 8GPa).

3. NZS3622 Verification of Timber Properties

NZS3603 – Timber Structures

• F – Grades deleted.
• MSG 15, 12, 10, 8 & 6 added
• Visual grade stresses for VSG10, VSG8, No1F Timber, (same as the MSG Grades).
• A Lower Bound MoE added.
• Shear & Compression Perpendicular strengths covered by note
• Strength Properties lowered in comparison to MoE
• Calls up NZS3622 – Verification