Figure 505.6 Horizontal Projections Below Gripping Surfaceĥ05.7 Cross Section. People with disabilities, older people, and others benefit from continuous gripping surfaces that permit users to reach the fingers outward or downward to grasp the handrail, particularly as the user senses a loss of equilibrium or begins to fall. The distance between horizontal projections and the bottom of the gripping surface shall be permitted to be reduced by 1/8 inch (3.2 mm) for each ½ inch (13 mm) of additional handrail perimeter dimension that exceeds 4 inches (100 mm).Īdvisory 505.6 Gripping Surface. Where handrails are provided along walking surfaces with slopes not steeper than 1:20, the bottoms of handrail gripping surfaces shall be permitted to be obstructed along their entire length where they are integral to crash rails or bumper guards.Ģ. Where provided, horizontal projections shall occur 1½ (38 mm) minimum below the bottom of the handrail gripping surface.ĮXCEPTIONS: 1. The bottoms of handrail gripping surfaces shall not be obstructed for more than 20 percent of their length. Handrail gripping surfaces shall be continuous along their length and shall not be obstructed along their tops or sides. Figure 505.5 Handrail Clearanceĥ05.6 Gripping Surface. Clearance between handrail gripping surfaces and adjacent surfaces shall be 1½ (38 mm) minimum. Figure 505.4 Handrail Heightĥ05.5 Clearance. Sufficient vertical clearance between upper and lower handrails, 9 inches (230 mm) minimum, should be provided to help prevent entrapment. A maximum height of 28 inches (710 mm) measured to the top of the gripping surface from the ramp surface or stair nosing is recommended for handrails designed for children. When children are the principal users in a building or facility (e.g., elementary schools), a second set of handrails at an appropriate height can assist them and aid in preventing accidents. The requirements for stair and ramp handrails in this document are for adults. Handrails shall be at a consistent height above walking surfaces, stair nosings, and ramp surfaces.Īdvisory 505.4 Height. Top of gripping surfaces of handrails shall be 34 inches (865 mm) minimum and 38 inches (965 mm) maximum vertically above walking surfaces, stair nosings, and ramp surfaces. Inside handrails on switchback or dogleg stairs and ramps shall be continuous between flights or runs.ĮXCEPTION: In assembly areas, handrails on ramps shall not be required to be continuous in aisles serving seating.ĥ05.4 Height. Handrails shall be continuous within the full length of each stair flight or ramp run. Handrails shall be provided on both sides of stairs and ramps.ĮXCEPTION: In assembly areas, handrails shall not be required on both sides of aisle ramps where a handrail is provided at either side or within the aisle width.ĥ05.3 Continuity. Sections 505.2, 505.3, and 505.10 do not apply to handrails provided on walking surfaces with running slopes less than 1:20 as these sections only reference requirements for ramps and stairs.ĥ05.2 Where Required. However, handrails are required to comply with 505 when they are provided on walking surfaces with running slopes less than 1:20 (see 403.6). Handrails are not required on walking surfaces with running slopes less than 1:20. Handrails are required on ramp runs with a rise greater than 6 inches (150 mm) (see 405.8) and on certain stairways (see 504). Handrails provided along walking surfaces complying with 403, required at ramps complying with 405, and required at stairs complying with 504 shall comply with 505.Īdvisory 505.1 General.
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