Current through Register Vol. 30, No. 50, December 13, 2024
Section R11-1-408 - Construction of Underground Ventilation DoorsVentilation doors shall be:
1. Substantially constructed.2. Covered with fire-retardant materials, if constructed of wood.3. Maintained in good condition.4. Self-closing, if manually operated.5. Equipped with audible or visual warning devices, if mechanically operated.Ariz. Admin. Code § R11-1-408
Adopted effective August 18, 1980 (Supp. 80-4).