Smoke – NFPA 80
NFPA 80 - Standard for Fire Doors and Other Opening Protectives, is a document which most of us in the hardware industry began studying in our earliest hardware school courses and refer back to throughout our careers. This standard is THE publication on fire doors, and is referenced by all of the codes and standards used in the U.S. that have anything to say about fire doors. You'd think that because of the close relationship between fire doors and smoke doors (some fire doors ARE smoke doors, after all) that NFPA 80 would have something to say about smoke. As it turns out, not much.