What is the minimum distance required between two hinge or pivoted doors in series?

The minimum distance required between two hinge or pivoted doors in series is determined by the need to ensure that both doors can operate effectively without obstructing one another. This distance must account for the width of the doors themselves and allow for adequate clearance for opening and closing motions.

When option C states "48" minimum plus width of doors," it emphasizes the importance of ensuring that, in addition to a base clearance of 48 inches, there is enough space to accommodate the width of the doors themselves. This clearance allows for the doors to swing open without colliding or blocking each other, which is critical in a design where functionality and accessibility are paramount.

Having 48 inches as a base also aligns with safety and building codes that specify minimum clearances for accessibility, ensuring that there is enough room for individuals to maneuver through door openings comfortably, particularly for those with disabilities.

In contrast, the other options do not adequately address both the necessary base distance and the additional space needed for the doors' widths. Simply stating a distance without considering the thickness of the doors limits the effectiveness of the space between them.