Official websites use. Share sensitive information only on official, secure websites. March 14, The Standards for Accessible Design were in effect for new construction and alterations until March 14, This document sets guidelines for accessibility to places of public accommodation and commercial facilities by individuals with disabilities. These guidelines are to be applied during the design, construction, and alteration of such buildings and facilities to the extent required by regulations issued by Federal agencies, including the Department of Justice, under the Americans with Disabilities Act of The technical specifications 4.
However, sections 4. Departures from particular technical and scoping requirements of this guideline by the use of other designs and technologies are permitted where the alternative designs and technologies used will provide substantially equivalent or greater access to and usability of the facility. The table describes graphic conventions used in the ADA Standards for Accessible Design for showing dimensions on figures, how the direction of approach is denoted, centerline designation and boundary of clear floor area.
All dimensions are shown in inches above the measure line, with the metric equivalent below. Where the dimension does not fit conveniently between lines, the measure line is extended beyond the lines and the dimension placed above and below the extension.
Dimensions that are not marked minimum or maximum are absolute, unless otherwise indicated in the text or captions. The text of these guidelines does not contain notes or footnotes. Additional information, explanations, and advisory materials are located in the Appendix. Paragraphs marked with an asterisk have related, nonmandatory material in the Appendix.
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In the Appendix, the corresponding paragraph numbers are preceded by an A. Meet one or more specifications of these guidelines. Denotes a specification that applies only when the conditions described are present. Access Aisle. An accessible pedestrian space between elements, such as parking spaces, seating, and desks, that provides clearances appropriate for use of the elements.
