Transcription of BASIC FIRE DOOR REQUIREMENTS TECHNICAL …
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BASIC FIRE DOOR REQUIREMENTS TECHNICAL …
BASIC fire DOOR REQUIREMENTS . TECHNICAL DATA. SHEET NO. 401. fire door openings are classified by their locations in the building. The location determines the length of exposure protection required, based on the potential fire hazard of that particular area. The six opening classifications are shown below along with the six door ratings and the maximum amount of glass in square inches allowed for each door. Label Maximum Classification Location In Building Glass Area 3 3 hour rated opening (Class A). Openings are in walls separating 100 square inches HOUR buildings or dividing a single building into fire areas. doors for these per leaf reference RATING openings require a fire protection rating of 3 hours. NFPA 80. 1-1/2 1 1/2 hour rated opening (Class B). Openings are in enclosures of Dependent upon HOUR vertical communication through buildings. These could be stairwells glass type. Check RATING or elevator shafts.
Location In Building 3 hour rated opening (Class A). Openings are in walls separating buildings or dividing a single building into fire areas. Doors for these
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