Brunette Girl Wearing Erotic Outfit On The Stairs With Iron Handrails

Handrail dimensions (USA)
Various model codes—The International Code Council (ICC) and National Fire Protection Association (NFPA)-- and accessibility standards — ANSI A117.1 and the Americans With Disabilities Act Standards for Accessible Design (ADA SAD) -- refer to handrail dimensions. Current versions of these codes and standards now agree that handrail is defined as either a circular cross section with an outside diameter of 1¼" (32 mm) minimum and 2" (51 mm) maximum or a non-circular cross section with a perimeter dimension of 4" (100 mm) minimum and 6¼" (160 mm) maximum and a cross section dimension of 2¼" (57 mm) maximum. In addition, the International Residential Code (IRC) includes a definition of a "Type II" handrail that allows for handrail with a perimeter dimension greater than 6¼" (160 mm).
The IRC and residential portion of the 2009 IBC define Type II handrail as follows: