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Construction Concerns: Types of Construction

By Gregory Havel National Fire Protection Association (NFPA) 220, Standard on Types of Building Construction, 2012 Edition, classifies buildings according to the fire resistive characteristics of the construction materials and methods used with the following: Type I: (fire resistive). Type II: (non-combustible). Type III: (ordinary, or brick and joist). Type IV: (heavy timber). Type V: (wood frame). Types I, II, III, and V are each subdivided into two subtypes according to the relative fire resistance of their materials and methods. These subtypes correspond to the “protected” and “unprotected” classifications used in building codes and in the older versions of the National Fire Incide...

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