Residential Exterior Handrail Code
Camila Farah
A handrail is a defined word in the building code but in the context of a barrier means the top rail of the barrier.
Equivalent graspability handrail gripping surfaces with a noncircular cross section shall have a perimeter dimension of 4 inches 100 millimeters minimum and 6 inches. Handrail graspability to be either type i or ii with a minimum 1 1 2 inch clearance from a wall. Handrail ends must be returned and terminated at rail posts. The international residential code irc and the international building code ibc provides the staircase railings codes and guidelines in the united states.
Table 1 states that safety barrier support posts and handrails must have a durability requirement of not less than 50 years. Ramps with a rise greater than 6 shall have handrails on both sides. The building code is the same for both interior and exterior steps. Railing ibc code cheat sheet handrail 1.
Handrails must be between 1 and 2 inches in diameter. While the finer details will ultimately be influenced by your local government s building regulations the international building code the international residential code and the standards set by the americans with disabilities act of 1990 maintain that exterior stairs that are a required point of egress in other words stairs that must be crossed on your way in and out of the building must have handrails. Handrail height to be placed a minimum 34 inches to 38 inches. Stairways within dwelling units are permitted to have handrail on one side only 3.
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Table 1 states a durability requirement of not less than 15 years for balusters. The international residential code for one and two family dwellings irc and the international building code ibc address staircase railings. Here s the citation in the residential edition of the florida building code fbc and the international residential code irc is the same. Building codes and standards.
For more information see section r311 7 of the 2015 international residential code for a more in depth look at stair requirements. This is a summary of the other handrail requirements found at r311 7 8. A handrail is required for 4 or more risers 3 treads. Irc stair railing code.
They provide the guidelines for local code authorities to follow at their discretion. Exterior or outdoor stair railing guardrail landing tread and step specifications codes construction requirements for safe outdoor steps stairs railings newel posts outdoor stair railing safety hazards photos of defects.
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