Structural Timber. Strength classes. Assignment of visual grades and species
Structural Timber. Strength classes. Assignment of visual grades and species
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1 Scope This European Standard lists the visual strength grades, species and sources of timber, and specifies the strength classes to which they are assigned, as documented in EN 338.
NOTE For the grades, species and sources included, there is a long history of use and/or satisfactory test data. The sources listed therefore are largely determined by existing commercial practice.
Другие стандарты BS