BS 8414的这一部分提供了一种测定混凝土防火性能特征的试验方法 固定在结构钢框架上并由其支撑的非承重外部覆层系统 并在受控条件下暴露在外部火灾中。火灾暴露峰值预计为: 代表外部火源或通风室内充分发展（闪络后）的火灾 使包层暴露在外部火焰影响下的孔。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This part of BS 8414 provides a test method for determining the fire performance characteristics of non-loadbearing external cladding systems when fixed to, and supported by, a structural steel frame and exposed to an external fire under controlled conditions. The peak fire exposure is intended to be representative of an external fire source or a fully developed (post-flashover) fire in a room venting from an aperture that exposes the cladding to the effects of external flames.All current amendments available at time of purchase are included with the purchase of this document.