NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
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12

Specification 12 Fire doors, smoke doors, fire windows and shutters

Specification 12 Fire doors, smoke doors, fire windows and shutters

This Specification sets out requirements for the construction of fire doors, smoke doors, fire windows and fire shutters.

A required fire door must—

  1. comply with AS 1905.1; and
  2. not fail by radiation through any glazed part during the period specified for integrity in the required FRL.

Smoke doors must be constructed so that smoke will not pass from one side of the doorway to the other and, if they are glazed, there is minimal danger of a person being injured by accidentally walking into them.

A smoke door of one or two leaves satisfies S12C3 if it is constructed as follows:

  1. The leaves are side-hung to swing—
    1. in the direction of egress; or
    2. in both directions.
  2. The leaves are solid-core and at least 35 mm thick, or are capable of resisting smoke at 200°C for 30 minutes.
  3. The leaves are fitted with smoke seals.
  4. The leaves—
    1. are normally in the closed position; or
    2. operate such that—
      1. they are closed automatically with the automatic closing operation initiated by smoke detectors, installed in accordance with the relevant provisions of AS 1670.1, located on each side of the doorway not more than 1.5 m horizontal distance from the doorway; and
      2. in the event of power failure to the door, they will fail-safe in the closed position.
  5. The leaves return to the fully closed position after each manual opening.
  6. Any glazing incorporated in the door complies with AS 1288.
  7. If a glazed panel is capable of being mistaken for an unobstructed exit, the presence of the glass must be identified by an opaque mid-height band, mid-rail, crash-bar or other opaque construction.

A required fire shutter must—

  1. be a shutter that—
    1. is identical with a tested prototype that has achieved the required FRL; and
    2. is installed in the same manner and in an opening that is not larger than the tested prototype; and
    3. did not have a rise in average temperature on the side remote from the furnace of more than 140 K during the first 30 minutes of the test; or
  2. be a steel shutter complying with AS 1905.2 if a metallic fire shutter is not prohibited by C4D6.

A required fire window must be—

  1. identical in construction with a prototype that has achieved the required FRL; and
  2. installed in the same manner and in an opening that is not larger than the tested prototype.