Recommendation: Providing the least possible slope below the 1:12 (8.33%) maximum offers better usability for a wider range of users. Variations in slope, such as grade breaks within runs, can disrupt The running slope (1:12 maximum) and cross slope (1:48 maximum) are permitted. To be uniform along a run, although slight variations may occur withĬertain materials such as concrete. It also canīe expressed as a percentage, pitch, or in degrees. Slope represents the proportion of vertical rise to horizontal lengthĪnd is specified in the Standards as a ratio (e.g., 1:12). Portions ofĪccessible routes with running slopes steeper than 5% also must be Elevators and, under certain specifiedĬonditions, platform lifts, can be used as an alternative. Ramps and curb ramps are required along accessible routes to spanĬhanges in level greater than ½”. These annotations are prefaced with begin and end image notes. Some images are paired with visually hidden notes. In this document ″ indicates inches and ′ indicates feet. Notational tips for users of screen reading software follow. This guide explains requirements in the ADA Guidance on the International Symbol of AccessibilityĬhapter 10: Recreational Boating FacilitiesĬhapter 10: Swimming Pools, Wading Pools, and Spas The extension should return to a wall, guard, or the landing surface or should be continuous to the handrail of an adjacent stair flight.Chapter 3: Clear Floor or Ground Space and Turning SpaceĬhapter 6: Washing Machines and Clothes Dryers If there is an adjacent flight, the handrail should be continuous.Īt the bottom of a stair flight, the handrails should extend at the slope of the stair flight for a horizontal distance at least equal to one tread depth beyond the last riser nosing. Extensions should return to a wall, guard, or the landing surface if there is no adjacent flight of steps. Stair handrail parts should extend horizontally for at least 12″ beginning directly above the first riser nosing. If it does continue, the handrail should be continuous. If the ramp does not continue after the landing, the extensions should return to a wall, guard, or landing surface. Ramp handrails should extend straight and horizontally above the landing for at least 12″ beyond both the top and bottom of ramp runs. Extend past the length of the ramp and/or stairs ADA handrails with a non-circular cross-section should have a perimeter dimension between 4″ and 6.25″ with a maximum cross-section dimension of 2.25″.Ħ. This also a reason why aluminum stairs must be free of dirt and must be kept clean at all times.ĪDA handrails with a circular cross-section should have an outside diameter between 1.25″ and 2″. This guideline ensures that persons using the steps or ramp can easily grip the handrails. They cannot be obstructed along their tops or sides, and the bottoms should not be obstructed for more than 20% of their length. Handrail gripping surfaces should have minimal obstruction. Handrails should be at a consistent height for the length of the stair flight or ramp run, including any platforms 4. For ramps and platforms, the handrail height can be measured at any point along the path. For a set of steps, the height of the handrail is measured from the edge of each nosing to the top of the handrail. The top of the gripping surfaces must be between 34″ and 38″ above the walking surface. Positioned between 34″ to 38″ above surface This guideline applies to all handrails, including the inside handrails on switchback or L-shaped stairs and ramps they must continue through the platforms. They cannot end or break at any point within the bounds of the steps or ramp. Handrails must be continuous through the full length of the stair flight or ramp run. For OSHA stair handrails, however, it can be just on one side. Handrails must be on both sides of the stairs and ramps.
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