Standard [CURRENT]
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The responsible national standardization committee is Working Committee NA 005-04-01 AA "Holzbau (SpA zu CEN/TC 124, CEN/TC 250/SC 5, ISO/TC 165)" ("Timber structures (national mirror committee for CEN/TC 124, CEN/TC 250/SC 5, ISO/TC 165)") at DIN Standards Committee Building and Civil Engineering (NABau). This document lists visual strength grades, species and sources of timber, and specifies the strength classes to which they are assigned. The assignments listed are for strength classes documented in EN 338. Structural timber that has previously been graded cannot be re-graded to the same or different grades unless the method of determining characteristic values has made allowances for changes to the timber population caused by the previous grading.
This document replaces DIN EN 1912:2013-10 .