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1105.5.4 Openings in Corridor Walls

Fire Code 2018 of Colorado > 11 Construction Requirements for Existing Buildings > 1105 Construction Requirements for Existing Group I-2 > 1105.5 Corridor Construction > 1105.5.4 Openings in Corridor Walls

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Openings in corridor walls shall provide protection in accordance with Sections 1105.5.4.1 through 1105.5.4.3.

1105.5.4.1 Windows

Windows in corridor walls shall be sealed to limit the passage of smoke, or the window shall be automatic-closing upon detection of smoke, or the window opening shall be protected by an automatic closing device that closes upon detection of smoke.

Exception: In smoke compartments not containing patient sleeping rooms, pass-through windows or similar openings shall be permitted in accordance with Section 1105.5.4.3.

1105.5.4.2 Doors

Doors in corridor walls shall comply with Sections 1105.5.4.2.1 through 1105.5.4.2.3.

1105.5.4.2.1 Louvers

Doors in corridor walls shall not include louvers, transfer grills or similar openings.

Exception: Doors shall be permitted to have louvers, transfer grills or similar openings at toilet rooms or bathrooms; storage rooms that do not contain storage of flammable or combustible material; and storage rooms that are not required to be separated as incidental uses.

1105.5.4.2.2 Corridor Doors

Doors in corridor walls shall limit the transfer of smoke by complying with the following:

Doors shall be constructed of not less than 1³/₄ inch-thick (44 mm) solid bonded-core wood or capable of resisting fire not less than ¹/₃ hour.
Exception: Corridor doors in buildings equipped throughout with an automatic sprinkler system.
Frames for side-hinged swinging doors shall have stops on the sides and top to limit transfer of smoke.
Where provided, vision panels in doors shall be a fixed glass window assembly installed to limit the passage of smoke. Existing wired glass panels with steel frames shall be permitted to remain in place.
Door undercuts shall not exceed 1 inch (25 mm).
Doors shall be positive latching with devices that resist not less than 5 pounds (22.2 N). Roller latches are prohibited.
Mail slots or similar openings shall be permitted in accordance with Section 1105.5.4.3.

1105.5.4.2.3 Dutch Doors

Where provided, dutch doors shall comply with Section 1105.5.4.2.2. In addition, dutch doors shall be equipped with latching devices on either the top or bottom leaf to allow leaves to latch together. The space between the leaves shall be protected with devices such as astragals to limit the passage of smoke.

1105.5.4.2.4 Self- or Automatic-Closing Doors

Where self- or automatic-closing doors are required, closers shall be maintained in operational condition.

1105.5.4.3 Openings in Corridor Walls and Doors

In other than smoke compartments containing patient sleeping rooms, mail slots, pass-through windows or similar openings shall not be required to be protected where the aggregate area of the openings between the corridor and a room are not greater than 80 square inches (51 613 mm²) and are located with the top edge of any opening not higher than 48 inches above the floor.