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(a)
Walking Parallel to a Wall

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685

(b)

cane range

Walking Perpendicular to a Wall

Fig. 8
Protruding Objects

4.4 Protruding Objects.

4.4.1 General. Objects projecting from walls (for
example, telephones) with their leading edges between
27 in and 80 in (685 mm and 2030 mm) above the
finished floor shall protrude no more than 4 in (100
mm) into walks, halls, corridors, passageways, or aisles
(see Fig. 8(a)). Objects mounted with their leading
edges at or below 27 in (685 mm) above the finished
floor may protrude any amount (see Fig. 8(a) and (b)).
Free-standing objects mounted on posts or pylons
may overhang 12 in (305 mm) maximum from 27 in
to 80 in (685 mm to 2030 mm) above the ground or
finished floor (see Fig. 8(c) and (d)). Protruding objects
shall not reduce the clear width of an accessible route
or maneuvering space (see Fig. 8(e)).

4.4.2 Head Room. Walks, halls, corridors.
passageways, aisles, or other circulation spaces shall
have 80 in (2030 mm) minimum clear head room
(see Fig. 8(a)). If vertical clearance of an area adjoin.
ing an accessible route is reduced to less than 80 in
(nominal dimension), a barrier to war blind or
visually-impaired persons shall be provided (see Fig.

8(c)).

685

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Example of Protection around Wall-Mounted Objects and Measurements of Clear Widths

Fig. 8

Protruding Objects (Continued)

4.5 Ground and Floor Surfaces.

4.5.1 General Ground and floor surfaces along accessible routes and in accessible rooms and spaces, including floors, walks, ramps, stairs, and curb ramps, shall be stable, firm, slip-resistant, and shall comply with 4.5.

4.5.2 Changes in Level. Changes in level up to 1/4 in (6 mm) may be vertical and without edge treatment (see Fig. 7(c)). Changes in level between 1/4 in and 1/2 in (6 mm and 13 mm) shall be beveled with a slope no greater than 1:2 (see Fig. 7(d)). Changes in level greater than 1/2 in(13 mm) shall be accomplished by means of a ramp that complies with 4.7 or 4.8. 4.5.3 Carpet. If carpet or carpet tile is used on a ground or floor surface, then it shall be securely

attached; have a firm cushion, pad, or backing or no cushion or pad; and have a level loop, textured loop. level cut pile, or level cut/uncut pile texture. The maximum pile height shall be 1/2 in (13 mm). Exposed edges of carpet shall be fastened to floor surfaces and have trim along the entire length of the exposed edge. Carpet edge trim shall comply with 4.5.2. If carpet tile is used on an accessible ground or floor surface, it shall have a maximum combined thickness of pile, cushion, and backing height of 1/2 in (13 mm) (see Fig. 8(1).

4.5.4 Gratings. If gratings are located in walking sur faces, then they shall have spaces no greater than 1/2 in (13 mm) wide in one direction (see Fig. 8(g)). If gratings have elongated openings, then they shall be placed so that the long dimension is perpendicular to the dominant direction of travel (see Fig. 8(h)).

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4.6 Parking and Passenger Loading Zones

4.6 Parking and Passenger Loading Zones.
4.6.1 Minimum Number. Parking spaces required
to be accessible by 4.1 shall comply with 4.6.2
through 4.6.4. Passenger loading zones required to be
accessible by 4.1 shall comply with 4.6.5 and 4.6.6.
4.6.2 Location. Parking spaces for disabled people
and accessible passenger loading zones that serve a
particular building shall be the spaces or zones
located closest to the nearest accessible entrance on
an accessible route. In separate parking structures or
lots that do not serve a particular building, parking
spaces for disabled people shall be located on the
shortest possible circulation route to an accessible
pedestrian entrance of the parking facility.
4.6.3 Parking Spaces. Parking spaces for disabled
people shall be at least 96 in (2440 mm) wide and
shall have an adjacent access aisle 60 in (1525 mm)
wide minimum (see Fig. 9). Parking access aisles shall
be part of an accessible route to the building or facility
entrance and shall comply with 4.3. Two accessible
parking spaces may share a common access aisle.
Parked vehicle overhangs shall not reduce the clear
width of an accessible circulation route. Parking
spaces and access aisles shall be level with surface
slopes not exceeding 1:50 in all directions.

EXCEPTION: If accessible parking spaces for vans
designed for handicapped persons are provided, each
should have an adjacent access aisle at least 96 in
(2440 mm) wide complying with 4.5, Ground and
Floor Surfaces.

4.6.4 Signage. Accessible parking spaces shall be
designated as reserved for the disabled by a sign
showing the symbol of accessibility (see 4.30.5). Such
signs shall not be obscured by a vehicle parked in the
space.

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