Fire Door Threshold Requirements

These requirements apply to all types of doors required to comply including sliding doors.

Fire door threshold requirements.

Commercial fire rated door requirements are typically determined by the fire rating of the wall and use of the door. Fire door requirements are set by the national fire protection association and these requirements have been incorporated into most local building codes in the united states with little to no modification. 2 hour 1 1 2 hour 90 minute openings of this type are used in enclosures of vertical. A 1 1 see annex k for general information about fire doors.

Metal fire doors can attain ratings up to 3 hours where wood fire doors can be rated up to 90 minutes. Not all fire doors and smoke doors are required to have air leakage limited to this level the key is to look for the reference to ul 1784 in the requirements for a specific door location. 1 1 1 with the exception of fabric fire safety curtain assemblies this standard addresses assemblies that have. Section 1910 155 c 3 iv a of this part defines listed and 1910 7 of this part defines a nationally recognized testing laboratory.

This standard regulates the installation and maintenance of assemblies and devices used to protect openings in walls floors and ceilings against the spread of fire and smoke within into or out of buildings. Basic fire door requirements opening wall rating door and frame rating description and use 4 hour 3 hour 180 minutes these openings are in walls that separate buildings or divide a single building into designated fire areas. Where a door opens over a landing the landing shall be at least as wide as the door and at least 5 feet long. A maximum height of 3 4 is permitted for existing or altered thresholds if they have a beveled edge on each side with a slope not steeper than 1 2.

F change in floor level at doors. The floor or landing shall be no more than 1 inch lower than the threshold of the doorway. Basic fire door fire door frame transom sidelight frame and window frame requirements table 1 fire door openings opening wall rating door and frame rating description and use 4 hour 3 hour 180 minutes these openings are in walls that separate buildings or divide a single building into designated fire areas. Not all doors in a commercial building need to be fire rated.

These requirements apply to all fire rated doors frames and windows. Fire doors are generally fire resistant sealed frame doors made of various materials and installed in fire rated walls. For example the ibc requires this limited airflow for fire doors that are also smoke and draft control doors in corridors and smoke barriers. Each fire door including its frame and hardware must be listed or approved by a nationally recognized testing laboratory.

Regardless of the occupant load there shall be a floor or landing on each side of a door.