(n) every stairwell in the accommodation areas shall be enclosed within a trunk constructed of class A-60 divisions and shall have self-closing doors, except that a stairwell connecting only two decks need only be fitted at one deck level with a division that has the same fire integrity and structural stability as the deck and self-closing doors;

(c) fire doors in main vertical zone bulkheads and stairway enclosures, other than fire doors that are normally closed, shall be capable of release either simultaneously or in groups from a control station and also individually from a position at the door and the release mechanisms shall be so arranged that the doors will automatically close when the control system is disrupted;

In the European Union, that automatic block on competition—which is sort of a fundamental feature of some of the implementation of the patent linkage systems in Canada and the U.S.—is not present.

The toilet access door shall provide a minimum clear useable width of 800 mm. Where the door is automatic or semi-automatic, it shall be possible to open it partially in order to allow a wheelchair user's assistant to leave and re-enter the toilet module.

When automatic watering systems are used, their functioning should be regularly checked, serviced and flushed to avoid accidents, such as blockages or leakages and the spread of infections.

The minimum requirements in Annex I relate to: structure and stability; electrical installations; emergency exits; fire detection and firefighting; ventilation of enclosed workplaces; temperature, natural and artificial lighting, floors, walls and ceilings of rooms, and windows and skylights; doors, gates and automatic doors; traffic routes - dangerous areas; escalators and travolators; loading ramps; room dimensions and airspace in rooms and freedom of movement at the workstation; rest rooms; sanitary equipment; first aid installations; and facilities for the handicapped.