Hello. Please sign in!

1991 ADA Standards for Accessible Design

Note: This document, portion of document or referenced document was published prior to the 2010 ADA Standards, and is still applicable.

4.2.4* Clear Floor or Ground Space for Wheelchairs.

4.2.4.1 Size and Approach.

The minimum clear floor or ground space required to accommodate a single, stationary wheelchair and occupant is 30 in by 48 in (760 mm by 1220 mm) (see Fig. 4(a)). The minimum clear floor or ground space for wheelchairs may be positioned for forward or parallel approach to an object (see Fig. 4(b) and (c)). Clear floor or ground space for wheelchairs may be part of the knee space required under some objects.

Clear floor space shown to be 30 by 48 inches minimum.

Fig. 4 Minimum Clear Floor Space for Wheelchairs

Plan diagram shows 30 by 48 inches minimum clear floor space, positioned for forward approach

Fig. 4 Minimum Clear Floor Space for Wheelchairs

Plan diagram shows 30 by 48 inches minimum clear floor space, positioned for parallel approach

Fig. 4 Minimum Clear Floor Space for Wheelchairs

4.2.4.2 Relationship of Maneuvering Clearance to Wheelchair Spaces.

One full unobstructed side of the clear floor or ground space for a wheelchair shall adjoin or overlap an accessible route or adjoin another wheelchair clear floor space. If a clear floor space is located in an alcove or otherwise confined on all or part of three sides, additional maneuvering clearances shall be provided as shown in Fig. 4(d) and (e).

For a front approach, where the depth of the alcove is equal to or less than 24 inches (610 mm), the required clear floor space is 30 inches by 48 inches (760 mm by 1220 mm).  For a side approach, where the depth of the alcove is equal to or less than 15 inches (380 mm), the required clear floor space is 30 inches by 48 inches (760 mm by 1220 mm).

Fig. 4 Minimum Clear Floor Space for Wheelchairs

For a front approach, if the depth of the alcove is greater than 24 inches (610 mm), then in addition to the 30 inch (760 mm) width, a maneuvering clearance of 6 inches (150 mm) in width is required.  For a side approach, where the depth of the alcove is greater than 15 inches (380 mm), then in addition to the 48 inch (1220 mm) length, an additional maneuvering clearance of 12 inches in length (305 mm) is required.

Fig. 4 Minimum Clear Floor Space for Wheelchairs

4.2.4.3 Surfaces for Wheelchair Spaces.

Clear floor or ground spaces for wheelchairs shall comply with 4.5.

[MORE INFO...]

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