DIN EN 14081-3-2012 木结构.矩形截面强度分级结构木材.第2部分:机械分级.工厂生产控制的附加要求.德文版本 EN 14081-3-2005
Timber structures - Strength graded structural timber with rectangular cross section - Part 3: Machine grading; additional requirements for factory production control; German version EN 14081-3:2012