WAC 296-307-26030
WAC 296-307-26030. Requirements that apply to railings and handrails on fixed stairs
Standard railings must be provided on the open sides of all exposed stairways and stair platforms. Handrails must be provided on at least one side of closed stairways, preferably on the right side descending. Stair railings and handrails must be installed according to WAC 296-307-250 .