1.1 This fire-test-response standard describes the measurement of surface flammability of materials. It is not intended for use as a basis of ratings for building code purposes (see Appendix X1). 1.2 The values stated in pound-inch units are to be regarded as the standard. The values in parentheses are for information only. 1.3 This standard measures and describes the response of materials, products, or assemblies to heat and flame under con