Smoke Door Definition

Doors in smoke barriers underground buildings and i 3 occupancies.

Smoke door definition.

For instance corridor doors often require smoke protection to prevent smoke from leaking from or into an occupied space. In north american building codes it along with fire dampers is often referred. 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. Rather the s label indicates the door meets the leakage tests that are part of ul 1784.

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. 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 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. 1 what is the definition of a corridor enclosure.

An s label isn t exactly a smoke rating. A smoke damper is required when a duct penetrates a corridor enclosure required to have smoke and draft control doors. The door in the event of smoke if not already closed will close automatically and be held closed. Smoke and draft control doors are required to be self closing or automatic closing in accordance with nfpa 80.

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. 6 19 2 door sets which are required to be. 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. Positive latching devices are not required.

Standard for air leakage tests of door assemblies and other opening protectives. Typical applications include lift lobbies hospital corridors hotels and unit entry doors in multi residential apartments. 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.

The doors shall have head and jamb stops astragals or rabbets at meeting edges and automatic closing devices.