Corridor Spacing for Visible Notification Appliances

NFPA 72 (National Fire Alarm and Signaling Code) defines spacing requirements for visible notification appliances (strobes) in Chapter 18, Notification Appliances. Tables 18.5.5.4.1 (a) states wall mount visible notification requirements based on size of the room and number of strobes (1 or 4). Table 18.5.5.4.1(b) states ceiling mount visible notification requirements based on size of room and mounting height of the strobe.
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