规定了建筑外墙中车库门和其他大型检修门的设计、施工和安装要求。适用于高度不超过3米的开口门，包括评估从门转移到支撑结构或建筑物的作用的规定。

Specifies requirements for the design, construction, and installation of garage doors and other large access doors in external walls of buildings. Applies to doors for openings up to three metres in height and includes provisions to evaluate actions transferred from the doors to the supporting structure or building.