Strength grading of timber explained
The paper “Strength grading of sawn timber in Europe: an explanation for engineers and researchers” by Dan Ridley-Ellis, Peter Stapel and Vanesa Baño is now published (online […]
Standards
EN 336 and UK customary sizes
The UK National Annex to EN336 is to be reinstated. Is the list of commonly available sizes (see below) still current? Send any comments to […]
The mysterious “TG1”
This week, the committee known as “TG1” met to evaluate some new settings for machine grading and visual grading assignments for EN1912. TG1 stands, simply, […]
Grading standards update (!!)
For the following, it may be helpful to refer to the CEN webpages that explain the various stages of drafting standards. The formal vote on […]
Voting on the revised EN14081-1
The European Standard EN14081-1 “Timber structures – Strength graded structural timber with rectangular cross section – Part 1 General requirements” is entering the final stages of revision, […]
EN338 – what’s happening with grades?
EN338 is a European Standard that specifies strength classes of structural timber (grades with numbers attached for use in design). It is not the only […]
What’s wrong with BS 373:1957?
Sadly, British Standard 373:1957 “Methods of testing small clear specimens of timber” probably won’t get to see it’s 60th birthday due to a rather critical […]
What is TR26?
TR26 is a structural timber grade in common, long standing, use in the UK for trussed rafters. It doesn’t appear in EN338 because it is […]
New rules for machine grading?
The Gradewood Transition project has submitted its proposed redraft of the standard governing machine grading (EN14081-2) to the European Standards Committee responsible for updating it […]
Machine settings for larch approved!
Our machine grading settings for UK-grown larch have been approved by CEN TC124 WG2 TG1. The machines we developed settings for are: MiCROTEC ViSCAN MiCROTEC […]