AS/NZS 4357:1995

1 - AS/NZS 4357:1995 STRUCTURAL LAMINATED VENEER LUMBER
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 REFERENCED DOCUMENTS
7 - 1.3 DEFINITIONS
7 - 1.3.1 Face, edge, and end surfaces, length, width and thickness
7 - 1.3.2 Laminated Veneer Lumber (LVL)
7 - 1.3.3 Structural LVL
7 - 1.4 DIMENSIONS AND SHAPE
7 - 1.4.1 Dimensions
8 - 1.4.2 Straightness
8 - 1.4.3 Twist
8 - 1.4.4 Squareness of section
8 - 1.4.5 Cupping
8 - 1.5 MOISTURE CONTENT
8 - 1.6 IMMUNIZATION AND CHEMICAL TREATMENTS
8 - 1.6.1 Immunization of lyctid-susceptible sapwood
8 - 1.6.2 Chemical treatment
9 - 1.7 PUBLICATION OF DESIGN PROPERTIES OR DATA
9 - 1.8 BRANDING
10 - SECTION 2 MANUFACTURE
10 - 2.1 GENERAL
10 - 2.2 MANUFACTURING SPECIFICATION
10 - 2.3 VENEER
10 - 2.3.1 General
10 - 2.3.2 Veneer quality
10 - 2.3.3 Veneer thickness
10 - 2.3.4 Veneer length
11 - 2.4 ASSEMBLY
11 - 2.4.1 General
11 - 2.4.2 Construction
11 - 2.4.3 Veneer joints
11 - 2.5 BONDING BETWEEN PLIES
11 - 2.6 MANUFACTURING PROCESS
11 - 2.7 STORAGE AND HANDLING
12 - SECTION 3 STRUCTURAL PROPERTIES AND DESIGN
12 - 3.1 GENERAL
12 - 3.2 PROPERTIES REQUIRED TO BE DETERMINED
12 - 3.3 METHODS FOR DETERMINATION OF STRUCTURAL PROPERTIES
12 - 3.3.1 Strength and stiffness
12 - 3.3.2 Joint strength
13 - 3.4 ADOPTION OF STRESS GRADE
13 - 3.5 ADOPTION OF JOINT STRENGTH GROUP FOR NAILS, SCREWS AND BOLTS
13 - 3.6 STRUCTURAL DESIGN
13 - 3.6.1 General
13 - 3.6.2 Section properties
14 - 3.6.3 Longitudinal sawing or machining to reduce thickness
14 - 3.6.4 Taper or curve cut LVL
15 - SECTION 4 STR UCTURAL VERIFICATION
15 - 4.1 GENERAL
15 - 4.2 CONTINUOUS MONITORING OF STRUCTURAL PROPERTIES
15 - 4.3 PERIODIC MONITORING OF STRUCTURAL PROPERTIES
15 - 4.4 RE-EVALUATION OF STRUCTURAL PROPERTIES
16 - APPENDIX A - STORAGE AND HANDLING OF STRUCTURAL LVL
17 - APPENDIX B - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
17 - B1 SCOPE
17 - B2 STATISTICAL SAMPLING
17 - B3 PRODUCT CERTIFICATION
17 - B4 SUPPLIER’S QUALITY SYSTEM
18 - B5 OTHER MEANS OF ASSESSMENT

Specifies requirements for the manufacture, characterization and verification of structural Laminated Veneer Lumber (LVL), and sets out dimensional tolerances, moisture content, veneer and bond quality, and structural properties to be determined for structural LVL. An appendix describes recommended practices for the storage and handling of structural LVL.

This Standard specifies manufacturing, in-grade structural characterization and structural verification requirements for structural Laminated Veneer Lumber (LVL) as a continuously glued assembly of veneers and for which structural design is performed in accordance with AS 1720.1 or NZS 3603.It is anticipated that additional design information specific to structural LVL will be included in AS 1720.1 and NZS 3603.

First published as AS/NZS 4357:1995.