The OFC and OBC regulations come from codes created by the National Fire Protection Association. Certain codes such as the NFPA 80 reviews fire door maintenance and proper installation to protect against fire and smoke. NFPA 101 reviews protection for people against flames, panic, and fumes.
Two principles one must acknowledge when modifying, installing or maintaining any lock, access device, or door in a building complex.
Fire and Smoke Protection – It is important that all fire doors are installed to prevent the spread of fire and smoke and must be certified.
A Clear Way Out – An exit from a housing or building complex must be able to be used with normal force.
Fire ratings are granted by third-party testing agencies and are labeled on the products. The doors must meet the requirements of the International Building and International Fire Codes, as well as NFPA 80. Building codes dictate the fire rating requirements for the wall. This is based on the location of the wall, building use, and more. The fire rating of the wall dictates the required fire rating of the door.Fire doors are required to be self closing and positive latching
Fire door assemblies have 5 ratings: