Hello. Please sign in!

Uniform Federal Accessibility Standards (UFAS)

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)).

Figure 8 Protruding Objects

Diagrams showing headroom clearance 80 inches (2030 mm) minimum, with a 4 inches (100 mm) maximum projection from wall and bottom of the projection higher than 27 inches (685 mm) for walking parallel to a wall.

Figure 8(a) Walking Parallel to a Wall

Diagram showing cane range as 27 inches (685 mm) maximum AFG, when walking perpendicular to a wall.

Figure 8(b) Walking Perpendicular to a Wall

Plan and elevation diagrams showing overhanging objects 27 inches (685 mm) maximum when distance between posts is greater than 12 inches (305 mm).

Freestanding Overhanging Objects

As an example, the diagram illustrates a stair whose underside descends across a pathway. Where the headroom is less than 80 inches, protection is offered by a railing (2030 mm) which can be no higher than 27 inches (685 mm) to ensure detectability.

Figure 8(c) (cont.)

Overhead Hazards

The diagram illustrates an area where an overhang can be greater than 12 inches (305 mm) because the object cannot be approached in the direction of the overhang.

Figure 8(d)

Objects Mounted on Posts or Pylons

The minimum clear width for continuous passage is 36 inches. Thirty two (32) inches is the minimum clear width for a maximum distance of 24 inches (610 mm). The maximum distance an object can protrude beyond a wing wall is 4 inches (100 mm).

Figure 8(e)

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

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 adjoining an accessible route is reduced to less than 80 in (nominal dimension), a barrier to warn blind or visually-impaired persons shall be provided (see Fig. 8(c)).

Diagrams showing headroom clearance 80 inches (2030 mm) minimum, with a 4 inches (100 mm) maximum projection from wall and bottom of the projection higher than 27 inches (685 mm) for walking parallel to a wall.

Figure 8(a) Walking Parallel to a Wall

As an example, the diagram illustrates a stair whose underside descends across a pathway. Where the headroom is less than 80 inches, protection is offered by a railing (2030 mm) which can be no higher than 27 inches (685 mm) to ensure detectability.

Figure 8(c) (cont.)

Overhead Hazards

[MORE INFO...]

*You must sign in to view [MORE INFO...]