2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)

11B-221.2.3 Lines of sight and dispersion.

Wheelchair spaces shall provide lines of sight complying with Section 11B-802.2 and shall comply with Section 11B-221.2.3. In providing lines of sight, wheelchair spaces shall be dispersed. Wheelchair spaces shall provide spectators with choices of seating locations and viewing angles that are substantially equivalent to, or better than, the choices of seating locations and viewing angles available to all other spectators. When the number of wheelchair spaces required by Section 11B-221.2.1 has been met, further dispersion shall not be required. In stadiums, arenas and grandstands, wheelchair spaces shall be dispersed to all levels that include seating served by an accessible route.

[2010 ADA Standards] 221.2.3 Lines of Sight and Dispersion. Wheelchair spaces shall provide lines of sight complying with 802.2 and shall comply with 221.2.3. In providing lines of sight, wheelchair spaces shall be dispersed. Wheelchair spaces shall provide spectators with choices of seating locations and viewing angles that are substantially equivalent to, or better than, the choices of seating locations and viewing angles available to all other spectators. When the number of wheelchair spaces required by 221.2.1 has been met, further dispersion shall not be required.

Exception: Wheelchair spaces in team or player seating areas serving areas of sport activity shall not be required to comply with Section 11B-221.2.3.

Advisory 11B-221.2.3 Lines of sight and dispersion. Consistent with the overall intent of the ADA, individuals who use wheelchairs must be provided equal access so that their experience is substantially equivalent to that of other members of the audience. Thus, while individuals who use wheelchairs need not be provided with the best seats in the house, neither may they be relegated to the worst. ◼

11B-221.2.3.1 Horizontal dispersion.

Wheelchair spaces shall be dispersed horizontally. In assembly areas that have seating encircling, in whole or in part, a field of play or performance, wheelchair spaces shall be dispersed horizontally around the field of play or performance area.

[2010 ADA Standards] 221.2.3.1 Horizontal Dispersion. Wheelchair spaces shall be dispersed horizontally.

Exceptions:

1. Horizontal dispersion shall not be required in assembly areas with 300 or fewer seats if the companion seats required by Section 11B-221.3 and wheelchair spaces are located within the 2^nd or 3^rd quartile of the total row length. Intermediate aisles shall be included in determining the total row length. If the row length in the 2^nd and 3^rd quartile of a row is insufficient to accommodate the required number of companion seats and wheelchair spaces, the additional companion seats and wheelchair spaces shall be permitted to be located in the 1^st and 4^th quartile of the row.
2. In row seating, two wheelchair spaces shall be permitted to be located side-by-side.

Advisory 11B-221.2.3.1 Horizontal dispersion. Horizontal dispersion of wheelchair spaces is the placement of spaces in an assembly facility seating area from side-to-side or, in the case of an arena or stadium, around the field of play or performance area. ◼

11B-221.2.3.2 Vertical dispersion.

Wheelchair spaces shall be dispersed vertically at varying distances from the screen, performance area, or playing field. In addition, wheelchair spaces shall be located in each balcony or mezzanine that is located on an accessible route.

Advisory 11B-221.2.3.2 Vertical dispersion. When wheelchair spaces are dispersed vertically in an assembly facility they are placed at different locations within the seating area from front-to-back so that the distance from the screen, stage, playing field, area of sports activity, or other focal point is varied among wheelchair spaces. ◼

Exceptions:

1. Vertical dispersion shall not be required in assembly areas with 300 or fewer seats if the wheelchair spaces provide viewing angles that are equivalent to, or better than, the average viewing angle provided in the facility.
2. In bleachers, wheelchair spaces shall not be required to be provided in rows other than rows at points of entry to bleacher seating.

Advisory 11B-221.2.3.2 Vertical dispersion Exception 2. Points of entry to bleacher seating may include, but are not limited to, cross aisles, concourses, vomitories, and entrance ramps and stairs. Vertical, center, or side aisles adjoining bleacher seating that are stepped or tiered are not considered entry points. ◼

Advisory 11B-221.2.3.2 Vertical dispersion Exception 2. Designing spectator seating for accessibility can be more complicated when folding bleachers are utilized. The lower rows of bleacher seats in a bank of bleachers often are omitted to allow for wheelchair positions with companion seating provided on the end of the adjacent row or on portable chairs. ◼