ABA Accessibility Standard for GSA Facilities Pocket Guide

305 Clear Floor or Ground Space

305.1 General.

Clear floor or ground space shall comply with 305.

305.2 Floor or Ground Surfaces.

Floor or ground surfaces of a clear floor or ground space shall comply with 302. Changes in level are not permitted. [ECTCR UFAS 4.2.4.3]

EXCEPTION: Slopes not steeper than 1:48 shall be permitted.

305.3 Size.

The clear floor or ground space shall be 30 inches (760 mm) minimum by 48 inches (1220 mm) minimum.

Figure 305.3 Clear Floor or Ground Space

305.4 Knee and Toe Clearance.

Unless otherwise specified, clear floor or ground space shall be permitted to include knee and toe clearance complying with 306.

305.5 Position.

Unless otherwise specified, clear floor or ground space shall be positioned for either forward or parallel approach to an element.

Figure 305.5 Position of Clear Floor or Ground Space

305.6 Approach.

One full unobstructed side of the clear floor or ground space shall adjoin an accessible route or adjoin another clear floor or ground space.

305.7 Maneuvering Clearance.

Where a clear floor or ground space is located in an alcove or otherwise confined on all or part of three sides, additional maneuvering clearance shall be provided in accordance with 305.7.1 and 305.7.2.

305.7.1 Forward Approach.

Alcoves shall be 36 inches (915 mm) wide minimum where the depth exceeds 24 inches (610 mm).

Figure 305.7.1 Maneuvering Clearance in an Alcove, Forward Approach

305.7.2 Parallel Approach.

Alcoves shall be 60 inches (1525 mm) wide minimum where the depth exceeds 15 inches (380 mm).

Figure 305.7.2 Maneuvering Clearance in an Alcove, Parallel Approach