规定了用于保护墙壁开口的防火门的施工和安装要求，以及防火隔墙的施工和安装要求。这些要求也适用于门上方的横框板，其中横框板包含在门框内，并构成门套的一部分。

Sets out requirements for the construction and installation of fire-resistant doorsets that are used to protect openings in walls, and for partitions that are required to resist the passage of fire. The requirements also apply to transom panels over doors, where the panels are contained within the doorframe and form part of the doorset.