Ceiling Height - c

Rooms that provide a full wall view to the outdoors or an atrium space (with at least twice the ceiling height of the room) have a minimum ceiling height of 2.75 m [9 ft] for a room width of 12 m [40 ft] plus at least 0.15 m [0.5 ft] for every 4.5 m [15 ft] over 12 m [40 ft].