The Ontario Building Code | Distance to Edge of Supporting Members
9.20.8.5. Distance to Edge of supporting Members
(1) masonry veneer of hollow units resting on bearing support shall not project more than,
(a) 30 mm beyond the supporting base where the veneer is not less than 90 mm thick, and
(b) 12 mm beyond the supporting base where the veneer is less than 90 mm thick.
(2) masonry veneer of solid units resting on bearing support shall not project more than one-third of the width of the veneer.
(3) Where the masonry veneer described in Sentence (2) is rough stone masonry,
(a) the projection shall be measured as the average projection of the units, and
(b) the width of the veneer shall be measured as the average width of the veneer.
9.20.9. Bonding and Tying