6.5 Internal circulation, doorways and handrails
6.5.1 Accessible route
Following the principle of Equitable use, it is necessary to provide at least one accessible route to connect accessible building or facility entrances, all accessible elements and spaces that are on the same site and within the building. The accessible route shall, to the maximum extent feasible, coincide with the route for the general public.

Colour and luminance contrast between walls and ceilings, and between walls and floors should be considered.

Provide a passing space of approximately 1500mm by 1500mm at reasonable intervals if an accessible route has less than 1500mm clear width. A T-intersection of two corridors or walks is an acceptable passing place.

Provide unobstructed turning space (of minimum 2000mm diameter) at corners and unobstructed space for approaching and opening doors.

Walks, corridors, passageways, aisles, or other circulation spaces shall have 2000mm minimum clear headroom (6.5.1a and 6.5.1b). If vertical clearance of an area adjoining an accessible route is less than 2000mm, a safety barrier of minimum 600mm high should be provided to warn the users, especially the visually impaired persons. Any protruding objects from the side wall should not obstruct people walking along the passageway.

A space to provide for umbrella stack and ‘parking’ of wheelchairs (6.5.1c) should be considered, especially in public facilities like exhibition halls and museums so that those with walking difficulty can use a wheelchair inside the building.