AS/NZS 4357.0:2005

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