AS/NZS 2271:1999

1 - AS/NZS 2271:1999 PLYWOOD AND BLOCKBOARD FOR EXTERIOR USE
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 REFERENCED DOCUMENTS
6 - 1.4 DEFINITIONS
7 - 1.5 GRADES OF PLYWOOD AND BLOCKBOARD FOR EXTERIOR USE
7 - 1.6 DIMENSIONS AND SHAPE
7 - 1.6.1 Dimensions
7 - 1.6.2 Shape
8 - 1.7 MOISTURE CONTENT
8 - 1.8 FINISH
8 - 1.9 JOINTS IN SHEETS
8 - 1.10 IMMUNIZATION AND PRESERVATIVE TREATMENT
8 - 1.10.1 Immunization of lyctid-susceptible sapwood
9 - 1.10.2 Preservative treatment
9 - 1.11 BRANDING
10 - SECTION 2 REQUIREMENTS FOR VENEERS AND CORE STRIPS
10 - 2.1 GENERAL REQUIREMENTS FOR ALL FACE AND BACK VENEERS
10 - 2.2 QUALITY A VENEER
10 - 2.2.1 General
10 - 2.2.2 Non-permitted imperfections
12 - 2.2.3 Permitted imperfections
12 - 2.3 QUALITY S VENEER
12 - 2.4 QUALITY B VENEER
12 - 2.4.1 General
12 - 2.4.2 Non-permitted imperfections
13 - 2.4.3 Permitted imperfections
13 - 2.5 QUALITY C VENEER
13 - 2.5.1 General
13 - 2.5.2 Non-permitted imperfections
13 - 2.5.3 Permitted imperfections
14 - 2.6 QUALITY D VENEER
14 - 2.6.1 General
14 - 2.6.2 Permitted imperfections
14 - 2.7 CORE VENEERS
14 - 2.8 CORE STRIPS
14 - 2.8.1 Species for core strips
14 - 2.8.2 Size and quality of core strips
15 - 2.8.3 Thickness of core strips
15 - 2.8.4 Finish of core strips
15 - 2.8.5 Moisture content of core strips
15 - 2.8.6 Assembly of core strips
16 - SECTION 3 MANUFACTURING REQUIREMENTS
16 - 3.1 JOINTS IN VENEERS
16 - 3.1.1 End Joints
16 - 3.1.2 Edge joints
16 - 3.2 JOINTS IN PLYWOOD AND BLOCKBOARD SHEETS
17 - 3.3 BONDING BETWEEN PLIES
17 - 3.4 ASSEMBLY OF PLYWOOD
17 - 3.4.1 Construction
17 - 3.4.2 Lay-up of plies
17 - 3.5 ASSEMBLY OF BLOCKBOARD
17 - 3.5.1 Construction
17 - 3.5.2 Thickness of plies in the sheet
18 - 3.5.3 Lay-up plies
19 - APPENDIX A - INFORMATION TO BE SUPPLIED WITH INQUIRIES AND ORDERS
20 - APPENDIX B - STORAGE AND HANDLING OF PLYWOOD OR BLOCKBOARD FOR EXTERIOR USE

Specifies requirements for the construction, manufacture, grading and finish of plywood and blockboard for exterior use, where the product is exposed to the weather or to wet or damp conditions. It also includes specifications for veneer and core strip qualities, bond quality, joints, panel construction, dimensional tolerances and moisture content. Appendices provide information to be supplied with enquiries and orders, and suggestions for storage and handling.

This Standard specifies requirements for the manufacture, grading and finish of plywood and blockboard used in exterior applications where the product is exposed to the weather, or wet or damp conditions. It also specifies veneer and core strip qualities, bond quality, joints, panel construction, dimensional tolerances, moisture content, finishing and branding.Two bond types are specified, i.e. types A and B, which are suitable for exterior applications. NOTES:1 Exposure conditions are defined in AS 2754.1.2 Appendix A provides the information to be supplied with inquiries and orders.3 Appendix B gives suggestions for the storage and handling of exterior plywood.

First published in Australia in part as part of AS (E)F501-1944.
Revised and redesignated AS O59-1952.
Revised and redesignated in part as AS O87-1963.
AS O105 first published 1969.
AS O87-1963 and part of AS O105-1969 revised, amalgamated and redesignated AS 2271-1979.
First published in New Zealand as NZSS 1211:1954.
Revised and redesignated NZS 3611:1970.
AS 2271-1979 and part of NZS 3611:1970 jointly revised, amalgamated and designated AS/NZS 2271:1999.