Perhaps you are conducting a fire inspection or survey and you notice that the hazard or commodity classification on the hydraulic calculation plate at the riser seems odd for the actual contents of the structure. Or, you are sitting down to do a plan review, the occupancy hazard and commodity class is listed. Are these classifications correct based on the use of the structure?
NFPA 13, Standard for the Installation of Sprinkler Systems, chapter five defines occupancy hazard and commodities classifications for the design and installation of sprinkler systems. In book form, this information can sometimes be difficult to recall. This slideshow presentation can be utilized as a reference to quickly review and confirm occupancy and commodity classifications.
