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Considerations for grading species combinations. General remarks on scenarios and requirements

Ridley-Ellis, Dan; Gil-Moreno, David; Harte, Annette M.


David Gil-Moreno

Annette M. Harte


Anders Q. Nyrud

Kjell Arne Malo

Kristine Nore


This paper discusses the situations in which timber species might be combined in commercial combinations, and the considerations relating to strength grading work. It is expected that more species combinations will be developed in the years to come, as the timber value chain diversifies. However, it is not clear how the grading standards and associated procedures should best adapt to cover situations where there is no long-standing industry experience. This paper presents some considerations and examples, with the aim of assisting people doing grading work in taking informed, safe steps based on their knowledge of the resource. This paper gives examples from the European standards, and mostly temperate species, but the principles are general.

Presentation Conference Type Conference Paper (Published)
Conference Name World Conference on Timber Engineering WCTE 2023: Timber for a Livable Future
Start Date Jun 19, 2023
End Date Jun 22, 2023
Acceptance Date Jun 19, 2023
Online Publication Date Jun 19, 2023
Publication Date Jun 19, 2023
Deposit Date Jun 26, 2023
Publisher Curran Associates, Inc.
Pages 780-786
Book Title Proceedings from the 13th World Conference on Timber Engineering (2023)
ISBN 9781713873297
Keywords Wood properties, strength grading, species combinations, standards, taxonomy, growth conditions
Publisher URL