(1) No openings shall occur within 1.2 m of interior and exterior corners of exterior non-loadbearing flat insulating concrete form walls.
(2) Portions of walls over openings in non-loadbearing flat insulating concrete form walls shall have a minimum depth of concrete of not less than 200 mm over the width of the opening.
(3) Openings more than 600 mm but not more than 3 m in width in non-loadbearing flat insulating concrete form walls shall be reinforced at the top and bottom with one 10M bar.
(4) Openings more than 3 m in width in non-loadbearing flat insulating concrete form walls shall be reinforced on all four sides with two 10M bars.
(5) Reinforcing bars described in Sentences (3) and (4) shall extend not less than 600 mm beyond the edges of the opening.
(6) The cumulative width of openings in non-loadbearing flat insulating concrete form walls shall be not more than 70% of the length of any wall.
Article 9.20.17.3 Ontario Regulation 332/12 Building Code, O. Reg. 332/12: BUILDING CODE (ontario.ca) © Queen’s Printer for Ontario, 2021.
