AS/NZS 4357.0:2005
Structural laminated veneer lumber - 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.
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AS/NZS 4357.0:2005 STRUCTURAL LAMINATED VENEER LUMBER - SPECIFICATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITION
1.3.1 Face, edge, and end surfaces, length, width and thickness
1.3.2 Laminated Veneer Lumber (LVL)
1.3.3 Structural LVL
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
SECTION 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
SECTION 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
3.6.3 Longitudinal sawing or machining to reduce thickness
3.6.4 Taper or curve cut LVL
SECTION 4 STRUCTURAL VERIFICATION
4.1 GENERAL
4.2 CONTINUOUS VALIDATION OF STRUCTURAL PROPERTIES
4.3 RE-EVALUATION OF STRUCTURAL PROPERTIES
APPENDIX A - STORAGE AND HANDLING OF STRUCTURAL LVL
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
APPENDIX C - PROCEDURES FOR CONTINUOUS VERIFICATION OF STRUCTURAL PROPERTIES FOR LVL BASED ON TESTING OF BENDING...
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)
C3.4 Determination of bending strength (R)
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
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References
Specification for preservative treatment - Laminated veneer lumber (LVL)
Methods of test for veneer and plywood - Bond quality of plywood (chisel test)
Plywood - Structural
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AS/NZS 4357.0:2005 STRUCTURAL LAMINATED VENEER LUMBER - SPECIFICATIONS
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 REFERENCED DOCUMENTS
1.3 DEFINITION
1.3.1 Face, edge, and end surfaces, length, width and thickness
1.3.2 Laminated Veneer Lumber (LVL)
1.3.3 Structural LVL
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
SECTION 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
SECTION 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
3.6.3 Longitudinal sawing or machining to reduce thickness
3.6.4 Taper or curve cut LVL
SECTION 4 STRUCTURAL VERIFICATION
4.1 GENERAL
4.2 CONTINUOUS VALIDATION OF STRUCTURAL PROPERTIES
4.3 RE-EVALUATION OF STRUCTURAL PROPERTIES
APPENDIX A - STORAGE AND HANDLING OF STRUCTURAL LVL
APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
B1 SCOPE
B2 STATISTICAL SAMPLING
B3 PRODUCT CERTIFICATION
APPENDIX C - PROCEDURES FOR CONTINUOUS VERIFICATION OF STRUCTURAL PROPERTIES FOR LVL BASED ON TESTING OF BENDING...
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)
C3.4 Determination of bending strength (R)
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
Previous versions
AS/NZS 4357.0:2005
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.