Americans with Disabilities Act (ADA) Intercom and Telephone Mounting Requirements



For a business or public building, a wheelchair accessible entrance that is locked requires some form of a communication system so so handicapped visitors can contact someone inside the building for access. When a communication system is required for this, one of the main ADA requirements is how it is positioned regarding its height. The highest operable part should be located no higher than 48-54 inches above the floor depending on whether the installation location requires forward reach or allows for side reach as seen in the illustrations below. Also, objects projecting from walls with their leading edges between 27 in and 80 in above the finished floor should not protrude more than 4 in into walks, halls, corridors, passageways, or aisles.

Side Reach Possible (a). If a parallel approach is provided at a device in an enclosure, the wing walls and shelf may extend beyond the face of the device a maximum of 10 inches (255 mm). The wing walls and shelf may not overlap the required clear space. Space between wing wall and shelf width are shown as "Any width." The controls shall be located no higher than 54 inches (1370 mm) above the floor and the wing walls shall extend downward to 27 inches (685 mm) or less above the floor. A clear floor space at least 48 inches (1220 mm) long by 30 inches (760 mm) wide is required with the long side parallel to the device. Device and enclosure are shown as wall-mounted or with optional post and base.

Forward Reach Required (b). If a forward approach is provided at a device with an enclosure, the shelf may extend beyond the face of the device a maximum of 20 inches (510 mm) into the required clear floor space. Wing walls may extend beyond the face of the device a maximum of 24 inches (610 mm). If wing walls extend more than 24 inches (610 mm) beyond the face of the device, an additional 6 inches (150 mm) in width of clear floor space shall be provided, creating a clear floor space of 36 in by 48 inches (910 mm by 1220 mm). Wing walls shall extend downward to 27 inches (685 mm) or less above the floor. The highest operable part shall be located no higher than 48 inches (1220 mm) above the floor. Device and enclosure are shown as wall-mounted or with optional post and base.

Author: