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About This Item

 

Full Description

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

Document History

  1. AS 3818.4-2010


    Timber - Heavy structural products - Visually graded, Part 4: Cross-arms for overhead lines

    • Most Recent
  2. AS 3818.4-2003


    Timber - Heavy structural products - Visually graded, Part 4: Cross-arms for overhead lines

    • Historical Version
  3. AS 3818.4-2000

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    Timber - Heavy structural products - Visually graded, Part 4: Cross-arms for overhead lines

    • Historical Version
  4. AS O61-1955


    Cross-arms from Eastern and South-eastern Australian hardwoods

    • Historical Version
  5. AS O20-1948


    Grading rules for cross-arms

    • Historical Version
  6. AS O20-1938


    Jarrah cross arms

    • Historical Version
  7. AS O21-1938


    Karri cross arms

    • Historical Version
  8. AS O7-1937


    Specifications for jarrah and karri together with notes on allowable working stresses

    • Historical Version