PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code
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9.15.4.5.Reinforcement for Flat Insulating Concrete Form Foundation Walls
(1) Horizontal reinforcement in flat insulating concrete form foundation walls shall
(a) consist of
(i) one 10M bar placed not more than 300 mm from the top of the wall, and
(ii) 10M bars spaced not more than 600 mm o.c., and
(b) be located
(i) in the inside half of the wall section, and
(ii) with a minimum cover of 30 mm from the inside face of the concrete.
(2) Vertical reinforcement in flat insulating concrete form foundation walls shall be
(a) provided in accordance with
(i) Table 9.15.4.5.-A for 150 mm walls,
(ii) Table 9.15.4.5.-B for 190 mm walls, and
(iii) Table 9.15.4.5.-C for 240 mm walls,
(b) located in the inside half of the wall section with a minimum cover of 30 mm from the inside face of the concrete
wall, and
(c) where interrupted by wall openings, be placed not more than 600 mm from each side of the openings.
(3) Cold joints in flat insulating concrete form foundation walls shall be reinforced with at least one 15M bar spaced not
more than 600 mm o.c. and embedded not less than 300 mm on both sides of the joint.
(4) Reinforcing around openings in flat insulating concrete form foundation walls shall comply with Article 9.20.17.3.
or 9.20.17.4.
Table 9.15.4.5.-A
Vertical Reinforcement for 150 mm Flat Insulating Concrete Form Foundation Walls
Forming Part of Sentence 9.15.4.5.(2)
Minimum Vertical Reinforcement
Maximum Height of Finished Ground Above
Maximum Unsupported Basement Wall Height
Finished Basement Floor, m
2.44 m 2.75 m 3.00 m
1.35 10M at 400 mm o.c. 10M at 400 mm o.c. 10M at 400 mm o.c.
1.60 10M at 400 mm o.c. 10M at 380 mm o.c. 10M at 380 mm o.c.
2.00 10M at 380 mm o.c. 10M at 380 mm o.c. 10M at 380 mm o.c.
2.20 10M at 250 mm o.c. 10M at 250 mm o.c. 10M at 250 mm o.c.
2.35 n/a 10M at 250 mm o.c. 10M at 250 mm o.c.
2.60 n/a 10M at 250 mm o.c. 10M at 250 mm o.c.
3.00 n/a n/a 10M at 250 mm o.c.
Table 9.15.4.5.-B
Vertical Reinforcement for 190 mm Flat Insulating Concrete Form Foundation Walls
Forming Part of Sentence 9.15.4.5.(2)
Minimum Vertical Reinforcement
Maximum Height of Finished Ground Above
Maximum Unsupported Basement Wall Height
Finished Basement Floor, m
2.44 m 2.75 m 3.00 m
2.20 none required 10M at 400 mm o.c. 10M at 400 mm o.c.
2.35 n/a 10M at 300 mm o.c. 10M at 300 mm o.c.
2.60 n/a 10M at 300 mm o.c. 15M at 400 mm o.c.
3.00 n/a n/a 15M at 400 mm o.c.
Table 9.15.4.5.-C
Vertical Reinforcement for 240 mm Flat Insulating Concrete Form Foundation Walls
Forming Part of Sentence 9.15.4.5.(2)
Minimum Vertical Reinforcement
Maximum Height of Finished Ground Above
Maximum Unsupported Basement Wall Height
Finished Basement Floor, m
2.44 m 2.75 m 3.00 m
2.20 none required none required none required
2.60 n/a 15M at 400 mm o.c. 15M at 400 mm o.c.
3.00 n/a n/a 15M at 400 mm o.c.
This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.