BS 476-6:1989+A1:2009规定了一种试验方法 结果表示为火灾蔓延指数， 这提供了一个相对的衡量标准 对火的生长的贡献 基本上是扁平材料、复合材料或组件。信息技术 主要用于评估 内墙和天花板衬里的性能。注:BS 476-6:1989+A1:2009中提及的出版物的标题列在封底内侧。交叉引用:BS 476-10BS 4422-1BS 4422-2BS 4422-5BS 4947PD 6498包含以下内容:修订，2009年5月。修订并替换BS 476-6:1989

BS 476-6:1989+A1:2009 specifies a method of test, the result being expressed as a fire propagation index, that provides a comparative measure of the contribution to the growth of fire made by an essentially flat material, composite or assembly. It is primarily intended for the assessment of the performance of internal wall and ceiling linings.NOTE The titles of the publications referred to in BS 476-6:1989+A1:2009 are listed on the inside back cover.Cross References:BS 476-10BS 4422-1BS 4422-2BS 4422-5BS 4947PD 6498Incorporates the following:Amendment, May 2009. Amends and replaces BS 476-6:1989