Smoke Door Definition

In north american building codes it along with fire dampers is often referred.

Smoke door definition.

Doors in smoke partitions shall comply with this section. Smoke and draft control door assemblies are intended to be installed in accordance with the standard for smoke door assemblies and other opening protectives nfpa 105 and the standard for fire doors and other opening protectives nfpa 80. Positive latching devices are not required. A fire door is a door with a fire resistance rating sometimes referred to as a fire protection rating for closures used as part of a passive fire protection system to reduce the spread of fire and smoke between separate compartments of a structure and to enable safe egress from a building or structure or ship.

A smoke damper is required when a duct penetrates a corridor enclosure required to have smoke and draft control doors. 6 19 2 door sets which are required to be. 1 what is the definition of a corridor enclosure. Smoke control door a door set with close fitting single or multi leaves which are impermeable to the passage of smoke fitted with smoke seals and installed within a smoke separation.

Windows shall be sealed to resist the free passage of smoke or be automatic closing upon detection of smoke. This standard shall prescribe minimum requirements for smoke door assemblies for use in providing safety to life and protection of property from smoke. For example the ibc requires this limited airflow for fire doors that are also smoke and draft control doors in corridors and smoke barriers. Typical applications include lift lobbies hospital corridors hotels and unit entry doors in multi residential apartments.

The door in the event of smoke if not already closed will close automatically and be held closed. An s label isn t exactly a smoke rating. For instance corridor doors often require smoke protection to prevent smoke from leaking from or into an occupied space. Smoke door assemblies are designed to improve life safety in buildings by limiting the spread of smoke through door openings and ensuring egress paths remain unobscured and tenable.

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. Smoke door definition is a door in the roof above the gridiron of a theater opened in case of fire to draw the flames up and so prevent their spread to the auditorium. Doors in smoke barriers underground buildings and i 3 occupancies. Rather the s label indicates the door meets the leakage tests that are part of ul 1784.

2 what if 1 door is required to have a smoke and draft control door but others are not.