Mich. Admin. Code R. 400.18635

Current through Vol. 24-21, December 1, 2024

Section R. 400.18635 - Fire doors

Rule 635.

(1) A fire door shall bear the underwriters laboratories, incorporated, or factory mutual label, be installed in a labeled fire door frame, and be equipped with a self-closer and a latching device.

(2) A fire door shall not be equipped with any hold-open device. A B-labeled fire door shall be provided as follows:

(a) In an opening into a vertical shaft, such as any of the following:

(i) A stairwell, rubbish, or incinerator shaft.

(ii) A laundry chute.

(iii) A dumbwaiter shaft.

(iv) A service shaft other than a ventilation duct opening.

(b) In an opening into any of the following:

(i) A storage room for ordinary combustible materials.

(ii) A janitor room and closet.

(iii) A linen room--both dirty and clean.

(iv) A laundry room.

(v) A heating plant room.

(vi) A machine and fan room.

(vii) A flammable liquid storage room.

(viii) A receiving room.

(ix) A laundry and rubbish bin room.

(x) A laundry and rubbish chute feed room.

(xi) A maintenance shop.

(xii) A kitchen storage room.

(xiii) An electrical service room.

(xiv) A gas meter room.

(c) An opening from a kitchen to required exit corridors in new construction.

(d) Fire doors that are used in pairs without mullions shall be equipped with astragals and synchronizing closing devices. Astragals shall be made of not less than 10-gauge steel and shall be securely attached in place so as to project 3/4 of an inch.

Mich. Admin. Code R. 400.18635

1994 AACS