AS 3818.2-2010

1 - AS 3818.2-2010 TIMBER-HEAVY STRUCTURAL PRODUCTS-VISUALLY GRADED - RAILWAY TRACK TIMBERS
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 NORMATIVE REFERENCE
6 - 1.4 DEFINITIONS
6 - 1.5 TIMBER SPECIES
6 - 1.5.1 General
7 - 1.5.2 Ordering
7 - 1.6 DESIGN
8 - SECTION 2 PRODUCT REQUIREMENTS
8 - 2.1 GENERAL
8 - 2.2 DIMENSIONS, SIZES, TOLERANCES AND SQUARENESS
8 - 2.3 BOW
8 - 2.4 SPRING
9 - 2.5 TWIST
9 - 2.6 RAIL SEAT AREA
9 - 2.7 COMBINATION OF CHARACTERISTICS
10 - SECTION 3 SLEEPERS
10 - 3.1 GENERAL
10 - 3.2 GRADE REQUIREMENTS
10 - 3.2.1 Grade 1 rectangular sleepers
12 - 3.2.2 Grade 2 rectangular sleepers
14 - 3.2.3 Grade 3 (river red gum) rectangular sleepers
16 - 3.2.4 Round-back sleepers
19 - SECTION 4 SPECIAL SLEEPERS(INCLUDING TURNOUT, SWITCH, LEAD, AND CROSSING TIMBERS)
19 - 4.1 GENERAL
19 - 4.2 GRADE REQUIREMENTS
19 - 4.2.1 Special sleepers without sound boxed heart
19 - 4.2.2 Special sleepers with sound boxed heart
20 - SECTION 5 BRIDGE TRANSOMS
20 - 5.1 GENERAL
20 - 5.2 GRADE REQUIREMENTS
20 - 5.2.1 Bridge transoms without sound boxed heart
22 - 5.2.2 Bridge transoms with sound boxed heart
23 - APPENDIX A - PURCHASING GUIDELINES
23 - A1 INFORMATION TO BE INCLUDED IN PURCHASING ORDERS
23 - A2 STORAGE AND MAINTENANCE
24 - APPENDIX B - DESIGN PROPERTIES
25 - BIBLIOGRAPHY

Provides producers and users of railway track timbers with requirements for the visual grading and selection of species for such timbers intended for use in railway track.

This Standard sets out the minimum requirements for visually graded rail track sleepers, special sleepers for lead, crossing or turnout timbers and bridge transoms. These minimum requirements apply at the time of grading.NOTES;1 Purchasing guidelines are given in Appendix A.2 It is intended that railway track timbers (except for special sleepers with boxed heart and bridge transoms with boxed heart) be predominantly backsawn (see Clause 2.1) and laid in track with the back upwards, that is, with the heart face down.

Originated as part of AS O7-1937.
Previous edition AS 3818.2-2004.
Third edition 2010.