AS 3818.5-2010

1 - AS 3818.5-2010 TIMBER-HEAVY STRUCTURAL PRODUCTS-VISUALLY GRADED - MINE LIFT GUIDES
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.3 PURPOSE AND CONTEXT OF USE
6 - 1.3.1 Function
6 - 1.3.2 Action
6 - 1.4 NORMATIVE REFERENCE
6 - 1.5 DEFINITIONS
7 - 1.6 TIMBER SPECIES
7 - 1.6.1 General
7 - 1.6.2 Ordering
8 - SECTION 2 PRODUCT REQUIREMENTS
8 - 2.1 GENERAL
8 - 2.2 DIMENSIONS, SIZES, TOLERANCES AND SQUARENESS
8 - 2.3 BOW AND SPRING
8 - 2.4 TWIST
8 - 2.5 COMBINATION OF CHARACTERISTICS
9 - SECTION 3 MINE LIFT GUIDES
9 - 3.1 GENERAL
9 - 3.2 GRADE REQUIREMENTS FOR BETTER FACE AND BOTH EDGES
10 - 3.3 GRADE REQUIREMENTS FOR WORSE FACE
11 - APPENDIX A - PURCHASING GUIDELINES
11 - A1 INFORMATION TO BE INCLUDED IN PURCHASING ORDERS
11 - A2 STORAGE AND MAINTENANCE
12 - BIBLIOGRAPHY

Provides producers and users of mine lift guides with product requirements including grade descriptions for visual grading of such timbers, intended for use as guides for lift cages in mine shafts.

This Standard sets out the minimum requirements for visual grading of mine lift guides intended for use as guides for lift cages in mine shafts. These minimum requirements apply at the time of grading.NOTE: Purchasing guidelines are given in Appendix A.

Originated as part of AS O22-1948.
Previous edition AS 3818.5-2003.
Second edition 2010.