Does NFPA 285 permit the use of engineering analysis in lieu of physical testing?

Blog Post created by tracyvecchiarelli Employee on Mar 27, 2018


In my recent NFPA Live session I answered a few of the most popular questions about NFPA 285, Standard Fire Test Method for Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components , including when a building requires NFPA 285 compliance. I also discussed some of the revisions being presented at the next Fire Test Committee meeting.


During the live event I received this follow-up question from an NFPA member. I'm now sharing it with you. I hope you find some value in it.


For more on the topic of understanding and managing the fire hazards of exterior walls containing combustible components visit


Tracy Vecchiarelli is a Senior Fire Protection Engineer at NFPA as well as the staff liaison for NFPA 285. NFPA Live is an interactive video series in which members of NFPA staff address some of the most frequent topics they receive through the Member's Only Technical Question service. If you are currently an NFPA Member you can view the entire video by following this link. If you're not currently a member, join today!