Ariz. Admin. Code § R11-1-663
Crossovers, elevated walkways, elevated ramps, and stairways shall be of substantial construction, provided with handrails, and maintained in good condition. Where necessary, toeboards shall be provided.
Former Section R11-1-703 renumbered as Section R11-1-663 effective August 18, 1980 (Supp. 80-4).