Width

Width is measured according to the following.
a. For a door (or doorway), the clear width when the door is open (Diagram D1).
b. For an escape route, either of the following.
i. When the route is defined by walls: the width at 1500mm above finished floor level.
ii. Elsewhere: the minimum width of passage available between any fixed obstructions.
c. For a stair, the clear width between the walls or balustrades. On escape routes and stairs,
handrails and strings intruding into the width by a maximum of 100mm on each side may be
ignored. Rails used for guiding a stair-lift may be ignored, but it should be possible to park the
lift’s chair or carriage in a position that does not obstruct the stair or landing.