DIN EN 1520:2011-06
具有結構或非結構加固的開放式結構的輕骨料混凝土預制鋼筋構件
Prefabricated reinforced components of lightweight aggregate concrete with open structure with structural or non-structural reinforcement; German version EN 1520:2011 / Note: Under certain conditions, DIN EN 1520 (2003-07) remains valid alongside this ...