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Concentrated Load Test: The top rail must be capable of holding a point load of 500 lbs.Uniform Load Test (for IBC applications): The top rail must be able to sustain 125 lbs./foot length of force applied horizontally or vertically.Infill Load Test: The strength of the balusters are tested so that a one-square foot area must resist 125 lbs.You could compare all the ADA, OSHA and IBC stair railing height. If you are using a circular cross section, then the handrail must have an outside diameter of between 1-1/4” and 2”.Įngineered railing systems must be tested and certified to meet IRC and IBC building codes. International Building Code (IBC) has requirements for stairs regarding width. The way this is measured is to begin at the leading edge of the stair nosing and run an imaginary vertical line upward until it reaches the top of the railing. Flat 2x4 and 2圆 handrails do not meet the requirements for graspable handrails. Landing shall be the width of the stairway served or a minimum of 48. Handrail Height: 34 to 38 Inches Handrail height on the stairs should be no less than 34 inches and no greater than 38 inches.
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A variety of gripping shapes may be acceptable but must meet requirements for the gripping surface.
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The handgrips must allow a minimum of 1-1/2” space between the handrail and the guardrail or wall. Handrail ends must be returned and terminated at rail posts. The top edge of the handrail must be placed between 34” and 38” above the nosing of the stair treads. width of the stairway at and below the handrail height. Handrails are required for stairs in many applications and must meet standards as specified by R311.5.6.3 in the IRC code. (Minimum Codified Ordinance Requirements from Ohio Residential Code). The sweep space between the deck surface and the bottom rail must be less than 4". To achieve this, you should check to make sure you meet the post spacing requirements for the type of posts you are using and how they are attached to the deck. There is also a safety factor required by the code, so testing loads are higher for manufactured railing systems. force anywhere along the top of the rail. The guardrails must be strong enough to withstand a concentrated 200 lb. In the case of guardrails for stairs, there is an exception that allows up to a 6” diameter sphere through the triangle opening formed by the stair riser, stairtread and bottom rail. A variety of styles are allowed as long as the interior sections of the rail don’t possess any openings large enough to pass a 4” diameter sphere through.