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III−7.5180 Assembly areas (ADAAG §4.1.3(19)). This section specifies the number of wheelchair seating spaces and types and numbers of assistive listening systems required in assembly areas.

1) Wheelchair seating: Requirements for wheelchair seating are triggered in any area that seats four or more people. The number of wheelchair locations required depends upon the size of the assembly area. Dispersal of wheelchair seating is required in assembly areas where there are more than 300 seats. In addition, at least one percent of all fixed seats must be aisle seats without armrests (or with removable armrests) to allow for transfer from a wheelchair. Fixed seating for companions must be located adjacent to each wheelchair location. In addition to requiring companion seating and dispersion of wheelchair locations, ADAAG requires that wheelchair locations provide people with disabilities lines of sight comparable to those for members of the general public. Thus, in assembly areas where spectators can be expected to stand during the event or show being viewed, the wheelchair locations must provide lines of sight over spectators who stand. This can be accomplished in many ways, including placing wheelchair locations at the front of a seating section, or by providing sufficient additional elevation for wheelchair locations placed at the rear of seating sections to allow those spectators to see over the spectators who stand in front of them. Finally, wheelchair seating must adjoin an accessible route that serves a means of egress from the assembly area. Under circumstances where wheelchair seating will be located adjacent to a portion of an aisle that serves as an accessible means of egress, then other portions of that aisle and other aisles that do not serve the accessible wheelchair locations are not required to comply with the requirements for ramps. ADAAG does not specify the location of the accessible means of egress. Therefore, the accessible means of egress from wheelchair locations can be through the rear, the side, or the front of the theater. (The general requirements for accessible routes are discussed above in III−7.4200.)

2) Assistive listening systems: Certain fixed seating assembly areas that accommodate 50 or more people or have audio-amplification systems must have a permanently installed assistive listening system. Other assembly areas must have a permanent system or an adequate number of electrical outlets or other wiring to support a portable system. A special sign indicating the availability of the system is required. The minimum number of receivers must be equal to four percent of the total number of seats, but never less than two.

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