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guard rails and handrails have specific dimensional requirements (e.g., 1-1/4" - 1-1/2" diameter gripping surface with 1-… | Staircase handrail, Staircase, Handrail
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Guard Rail Height Requirements
guard rails and handrails have specific dimensional requirements (e.g., 1-1/4" - 1-1/2" diameter gripping surface with 1-1/2" clear space between the rail and the wall) stairs have max. riser height = 7" and minimum tread length = 11"; also nosing profile should be "continuous" and smooth rather than articulated.