Guideline on Fire Ratings of Archaic Materials and Assemblies

The purpose of the Guideline on Fire Ratings of Archaic Materials and Assemblies is to assist architects, engineers, preservationists, and code officials in evaluating the fire safety of older buildings by providing documentation on the fire-related performance of a wide variety of archaic building materials and assemblies, and, for those cases where documentation cannot be found, by providing ways to evaluate general classes of archaic materials and assemblies.