Standard
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AS 3818.4-2010
[Pending Revision]Timber — Heavy structural products — Visually graded, Part 4: Cross-arms for overhead lines
Provides producers and users of timber cross-arms with requirements for the visual grading and selection of species of such timbers intended for use in supporting overhead utility services.
Published: 15/11/2010
Pages: 13
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Purpose and context of use
1.3.1 Function
1.3.2 Action
1.4 Normative reference
1.5 Definitions
1.6 Timber species
1.6.1 General
1.6.2 Ordering
1.7 Design
2 Product requirements
2.1 General
2.2 Dimensions, sizes, tolerances and squareness
2.3 Bow and spring
2.4 Twist
2.5 Combination of characteristics
3 Grade 1 cross-arms
3.1 General
3.2 Grade requirements
4 Grade 2 cross-arms
4.1 General
4.2 Grade requirements
5 Optional top surface grade
5.1 General
5.2 Grade requirements
Appendix A
A1 Information to be included in purchasing orders
A2 Storage and maintenance
Appendix B
Bibliography
Cited references in this standard
[Pending Revision]
Timber — Heavy structural products — Visually graded, Part 1: General requirements
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