Historical
NFPA 80A-2017
NFPA 80A Recommended Practice for Protection of Buildings from Exterior Fire Exposures, 2017 edition
1.1 Scope. This recommended practice addresses separation distances between buildings to limit exterior fire spread based on exterior openings and other construction features. 1.2 Purpose. These recommendations are intended to provide a reasonable level of protection for combustibles within and on the exterior of a building exposed to an external building fire while effective fire-fighting activity is being contemplated.
National Fire Protection Association [nfpa]