AS 3818.4-2003

1 - AS 3818.4:2003 TIMBER - HEAVY STRUCTURAL PRODUCTS - VISUALLY GRADED - CROSS-ARMS FOR OVERHEAD LINES
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 APPLICATION
6 - 3 PURPOSE AND CONTEXT OF USE
6 - 3.1 Function
6 - 3.2 Action
6 - 4 REFERENCED DOCUMENTS
6 - 5 DEFINITIONS
7 - 6 DESIGN
7 - 7 TIMBER SPECIES
7 - 7.1 General
7 - 7.2 Ordering
7 - 8 DIMENSIONS, SIZES, TOLERANCES AND SQUARENESS
8 - 9 CROSS-ARMS - GRADE DESCRIPTIONS
8 - 9.1 General
8 - 9.2 Grade 1 Cross-arms-Grade description
9 - 9.3 Grade 2 Cross-arms-Grade description
10 - 9.4 Optional top surface grade
11 - APPENDIX A - GUIDANCE FOR PURCHASERS
11 - A1 INFORMATION THAT SHOULD BE INCLUDED IN PURCHASING ORDERS
11 - A2 STORAGE AND MAINTENANCE
12 - APPENDIX B - DESIGN PROPERTIES

Specifies visual grading rules and dimensional tolerances for timber cross-arms intended for use as supports for overhead utility service cables. Two grades of cross-arms are described and an optional top surface grade is also given. F-grades are given for use in the structural design. This Standard is to be used in conjunction with AS 3818.1.

First published as part of AS 07-1937.
Revised and redesignated in part as AS 020-1938.
Second edition 1948.
AS 061 first published 1955.
AS 020-1948 and AS 061-1955 revised, amalgamated and redesignated as AS 3818.4-2000.
Second edition 2003.