Standard
UPDATE AVAILABLE
AS/NZS 4357.0:2005
[Superseded]Structural laminated veneer lumber, Part 0: Specifications
Specifies requirements for the manufacture, structural characterization, and structural verification of laminated veneer lumber intended for structural applications, and sets out dimensional tolerances, moisture content, veneer and bond quality, and structural properties to be determined for structural LVL. Also specifies requirements for formaldehyde emission.
Published: 08/08/2005
Pages: 18
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Referenced documents
1.3 Definition
1.4 Dimensions and shape
1.4.1 Dimensions
1.4.2 Straightness
1.4.3 Twist
1.4.4 Squareness of section
1.4.5 Cupping
1.5 Moisture content
1.6 Immunization, preservative and chemical treatments
1.6.1 Immunization of lyctid-susceptible sapwood
1.6.2 Preservative treatment
1.6.3 Chemical treatment
1.7 Publication of characteristic properties or data
1.8 Branding
2 Manufacture
2.1 General
2.2 Manufacturing specification
2.3 Veneer
2.3.1 General
2.3.2 Veneer quality
2.3.3 Veneer thickness
2.3.4 Veneer length
2.4 Assembly
2.4.1 General
2.4.2 Construction
2.4.3 Veneer joints
2.5 Bonding between plies
2.6 Manufacturing process
2.7 Formaldehyde
2.7.1 Test method
2.7.2 Formaldehyde emission classes
2.8 Storage and handling
3 Structural properties
3.1 General
3.2 Properties required to be determined
3.3 Methods for determination of structural properties
3.3.1 Strength and stiffness
3.3.2 Joint strength
3.4 Adoption of F-grade
3.5 Adoption of joint group for nails, screws and bolts
3.6 Structural design
3.6.1 General
3.6.2 Section properties
3.6.2.1 Non-cross-banded LVL
3.6.2.2 Cross‑banded LVL
3.6.3 Longitudinal sawing or machining to reduce thickness
3.6.4 Taper or curve cut LVL
4 Structural verification
4.1 General
4.2 Continuous validation of structural properties
4.3 Re-evaluation of structural properties
Appendix A
Appendix B
B1 Scope
B2 Statistical sampling
B3 Product certification
Appendix C
C1 Scope
C2 Sample selection
C2.1 Frequency
C2.2 Specimen size
C3 Sample testing
C3.1 General
C3.2 Testing machine configuration
C3.3 Determination of modulus of elasticity (E)
C3.3.1 Testing on edge
C3.3.2 Testing on flat
C3.4 Determination of bending strength (R)
C3.4.1 Testing on edge
C3.4.2 Testing on flat
C4 End product properties verification
C4.1 General
C4.2 Determination of Ek,mean
C4.3 Determination of Rk,norm
C5 Requirements for verification
C5.1 General
C5.2 Ek,mean
C5.3 Rk,norm
C6 Corrective action procedures
C6.1 General
C6.2 Individual (E) result lower than 0.85 of the published value of Ek,mean
C6.3 Individual (R) result lower than Rk
C6.4 Ek,mean or Rk,norm falls below published values
Cited references in this standard
[Current]
Sampling procedures for inspection by attributes, Part 0: Introduction to the ISO 2859 attribute sampling system
[Current]
Sampling procedures for inspection by attributes, Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
[Superseded]
Specification for preservative treatment, Part 1: Sawn and round timber
Content history
[Current]
[Superseded]
DR 04394
AS/NZS 4357.0:2005 Rec:2016
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