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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
For a forward approach, if the depth of the alcove is greater than 24 inches (610 mm), the clear floor or ground space within the alcove must be 36 inches (915 mm) wide minimum.
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
For a parallel approach, if the depth of the alcove is greater than 15 inches (380 mm), then the length of the clear floor or ground space within the alcove must be 60 inches (1525 mm) minimum.

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