As long as there is maneuvering past the door swing, it is not an issue.....
Typically, the doors-in-series condition occurs in entry
vestibules that are used to reduce the infiltration of outside
air. It is important to realize that this requirement applies
only when the user must pass through two doors in succession.
The requirement would not be applicable if, instead
of a vestibule, the situation was a corridor and the two
doors were into offices located on opposite sides of the
corridor. A storm or screen door immediately in front of an
entrance door or communicating doors between two hotel
rooms are not considered doors in a series.
Swinging doors in series when placed too closely
together can create a condition where a person using a
wheelchair may pass through one door, and still have to
hold that door open while trying to open the second door.
To resolve this condition, a minimum distance of 48 inches
(1220 mm) is required between the doors if the doors
swing away from each other or 48 inches (1220 mm) plus
the width of any door swinging into the space is required
[see Figure 404.2.5 and Commentary Figure C404.2.5(a)].
Doors in a series are not always in a straight line. Doors
may be offset, or located on adjacent walls rather than
opposite walls. The intent is that a clear floor space for a
wheelchair [i.e., 30 inches by 48 inches (765 by 1220
mm)] is available past the swing of the first door so the
person entering can let one door close before they start to
open the second door [see Commentary Figure C404.2.5
(b)].
I have a customer wanting to add a door in a wall perpendicular to an existing door. The existing door swing will swing in the Maneuvering Clearance for the new door that swings into the adjacent room.
