规定了建筑物中排水和通风空腔上的实心灰泥和灰泥的要求，以及刚性或非刚性背衬，以实现结构良好、坚硬、耐用和防水表面。本次修订引入了石膏后面空腔的要求，适用于冲击荷载仅限于与家用相关的柔体冲击的外墙和内墙。

Sets out the requirements for solid plaster, and stucco over a drained and vented cavity with a rigid or non-rigid backing in buildings, to achieve structurally sound, hard, durable and water resistant surfaces. This revision has introduced the requirement of cavity behind the plaster and applies to exterior and interior walls where impact loads are limited to soft body impacts associated with domestic use.