The Ontario Building Code | Clear Height
220.127.116.11. Clear Height
(1) Except for stairways, doorway ="http://thehandyforce.com/doors/" title ="Toronto Door installer">doorways and storage garages, the minimum clear height in exits and access to exits shall be 2 100 mm.
(2) The clear height in exits and access to exits in a storage garage shall be not less than 2 000 mm.
9.9.4. Fire Protection of Exits