Table of Contents

Abstract

RECONFIRMATION NOTICE
Technical Committee TM-012 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 20 May 2016.
Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 5 July 2016.
The following are represented on Technical Committee TM-012:
Australian and New Zealand Timber Preservative Manufacturers Association
Australian Forest Products Association
Australian Pesticides and Veterinary Medicines Authority
Australian Timber Flooring Association
Australian Timber Importers Federation
Building Research Association of New Zealand
Department of Agriculture, Fisheries and Forestry (QLD)
Engineered Wood Products Association of Australasia
Forest and Wood Products Australia
Forestry Corporation of NSW
Glued Laminated Timber Association of Australia
Master Builders Australia
NATSPEC
New Zealand Timber Industry Federation
New Zealand Timber Preservation Council
New Zealand Wood Processors Association
Responsible Care New Zealand
Scion
Tasmanian Timber Promotion Board
Timber Preservers Association of Australia

Scope

This Standard sets out four test methods for determining the slope of grain in timber articles, as follows:
(a) The timber articles are either regular or irregular in plan or section, by means of a scribe (Clause 4).
(b) The timber articles are either regular or irregular in plan or section by reference to checks appearing on the surface (Clause 5).
(c) The timber articles are either regular or irregular in plan or section by the removal of splinters from the surface (Clause 6).
(d) The backsawn (flat sawn) and quartersawn surfaces of the timber articles exhibit grain deviation from the axis of symmetry (Clause 7).
NOTE: Where predictable strength of timber is the primary consideration, sloping grain can be an important characteristic. It is often difficult to detect by visual examination of the surface. The importance will be appreciated where it is realized that sloping grain means that a beam with sloping grain has a strength that may be significantly less than the strength of the wood fibre in the beam, e.g., there is a reduction in the strength of beams, from the fibre strength, of approximately 20% for a slope of 1 in 16, 30% for a slope of 1 in 12 and 50% for a slope of 1 in 8. Grading processes identify this reduction in performance.
It is stressed that the test methods herein determine only whether or not a piece of timber has slope of grain and its magnitude. The methods do not set down any criteria for grade specifications.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmed 07/10/2016. This standard has been reconfirmed in Australia in 2016 and remains current in New Zealand. Reconfirmation Notice 7/10/2016
Pages
ISBN
Committee	TM-003
Supersedes	AS/NZS 1080.2.2:1998 AS/NZS 1080.2.3:1998 AS/NZS 1080.2.1:1998 AS/NZS 1080.2.1:1998 AS/NZS 1080.2.4:1998 DR 06044 CP