BSD182 x2013 71913 S ingle F amily and D uplex Handrails P rovide a graspable surface along stairs Applicable Code 2012 IRC Section 31178 When Required Handrails shall be provided on a ID: 100178
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Figure 5 . Guard height and opening limitations Figure 6 . Guard opening limitations on stairs GuardsProtect people from falling from elevated walking surfaces. Applicable Code:2015IRC Section 312When Required:Along any opensidedwalking surface, including stairs, ramps and landingsthat are located more than 30” vertically above grade at any point within 36” horizontallyto the edge of the open sideIf a stair is more than 30” above grade at any point in the stair’s flight, a guard is required along the full length of the open side. Height:36” minimumabove the walking surface or the line connecting the leading edge of treadsOpening limitations:No openings shall be large enough to allow a 4” diameter sphere to pass through(See Figure 5)with the following exceptions:Triangular openings on a stair, between the tread, riser and bottom rail of a guard, shall not allow a 6” diameter sphere to pass through(See Figure 6)Other openings on guards located on stairs shall not allow a 4 3/8” sphere to pass through(See Figure 6)This handout is for general informational purposes only, and is not a substitute for the full code text. If discrepancies arise, the code shall govern. BSD#182 /17 Permit Center 210 Lottie Street, Bellingham, WA 98225Phone: (360) 7788300 Fax: (360) 7788301 TTY: (360) 7788382Email: permits@cob.orgWeb: www.cob.org/permits Residential Handrails & Guardsingle Family anduplex Handrailsrovide a graspable surface along stairs Figure 3 . Nonc ircular handrail Figure 4 . Nonc ircular handrail , with recess Figure 1. Handrail height Figure 2 . Circular handrail