To understand the approach requirements in accordance with ADAAG 404.2.4.1, Swinging Doors and Gates, consideration must be given to the minimum maneuverability clearance, which is based on how a person approaches—from the pull or push side.
For swinging doors, the front approach to the pull side of a door shall have maneuvering space extending from the front hinge of the door to 445 mm (18 in.) beyond the latch side of the door. The push side of the door shall have maneuvering space at the hinge side extending 305 mm (12 in.) beyond the latch side (see Figure 1).
For swinging doors where the approach is from the hinge side, the measurement from the hinge side approach to the pull side shall have a minimum maneuvering space extending 915 mm (36 in.) beyond the latch side (see Figure 2).
If the approach is 915 mm from the hinge side, the measurement between the wall and the opposite wall must have a minimum of 1525 mm (60 in.) If the approach is 1065 mm (42 in.) or greater from the hinge side, the measurement between the wall and the opposite wall must have a minimum of 1370 mm (54 in.).
The push side (right side of Figure 2) approach must have 1370 mm measured from the leading edge of the door extending toward the approach side and have 1065 mm from the wall to the opposite wall, without a closing device. If a closing device and latch are used this measurement must increase to 1220 mm (48 in.).
With respect to swinging doors with latch side approaches, the latch to the push or pull side needs a maneuvering space that extends 610 mm (24 in.) from the latch side (see Figure 3). The difference is in the corridor width required. The pull side would require 1220 mm without closer and 1370 mm with closing device. The push side would require 1065 mm without closing device and 1220 mm with a closing device.
Revolving doors and turnstiles are addressed in 404.2.1, which notes revolving doors, revolving gates, and turnstiles shall not be part of the accessible route. This means a separate accessible gate or door must be provided adjacent to the turnstile or revolving door.
In this case, two additional doors were installed on either side of the revolving door to meet accessibility requirements.
Double-leaf doorways are addressed in 404.2.2, which notes if doorways have two independently operating door leaves, at least one leaf shall meet the specifications on 404.2.3 (clear width) and 404.2.4 (thresholds) (see Figure 4, page 14). That leaf shall be an active leaf. In the case of Figure 5, there is an unequal pair of double doors. The right side-leaf meets ADAAG requirements while the left-side is exempt.