![]() Specifying a running slope of 7.5% maximum and a cross slope of 1.5% maximum for exterior ramps will accommodate most irregularities or variances due to construction methods or materials according to a study sponsored by the Board ("Dimensional Tolerances in Construction and for Surface Accessibility" by David Kent Ballast.) ![]() 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 Chapter 3: Clear Floor or Ground Space and Turning SpaceĬhapter 6: Washing Machines and Clothes Dryers
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