Strength classes you won’t find in EN338
Not all strength classes are listed in EN338. Here are the main characteristic properties of some strength classes that appear in machine settings tables for […]
EN384
Growth ring width and density of British spruce cladding battens
The UK has a British Standard for external timber cladding, BS8605-1, in which support battens are defined as timber components of a section, grade, and […]
Updates to EN14081-3,-2 and EN384
There is a proposed new version of EN14081-3 out for Enquiry, mostly to provide proper integration of the updated output control rules (compared to the […]
Grading of home grown timber (summary)
Yesterday I spoke at the “Green Drinks” organised by SEDA and AECB. (The other main speaker was Nick Marshall, coordinator of the Association of Scottish […]
UKTGC website
The UK Timber Grading Committee now has a website: http://uktgc.org.uk Being brand new, it is still very much a work in progress and we welcome […]
Standard symbols for timber
At the last meeting of CEN TC124 WG2 we were working on the revision of EN 14081-2 for machine grading of timber – which is […]
5th percentile shear modulus?
In the current version of Eurocode 5 (EN 1995-1-1:2004+A2:2014) you can find equations that relate to the lateral torsional buckling of beams. Equation 6.31 gives the […]
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 […]
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 […]