The Ontario Building Code | Framing Supported on Flat Insulating Concrete Form Walls
9.20.17.5. Framing supported on Flat insulating Concrete Form walls
(1) floor joists supported on the side of flat insulating concrete form walls shall be supported with joist hangers secured to wood ledger boards.
(2) The ledger boards described in Sentence (1) shall be not less than,
(a) 38 mm thick, and
(b) the depth of the floor joists.
(3) Anchor bolts shall be used to secure ledger boards to flat insulating concrete form walls and shall be,
(a) embedded in the wall to a depth not less than 100 mm, and
(b) spaced in accordance with Table 9.20.17.5.
(4) floor joists and building frames supported on top of flat insulating concrete form walls shall be anchored in conformance with Article 9.23.6.1.
Table 9.20.17.5.
Maximum Anchor Bolt Spacing for the Connection of Ledger Boards to Flat insulating Concrete Form walls
Forming Part of Sentence 9.20.17.5.(3)
| Item | Column 1 | Column 2 | Column 3 |
|
| Maximum Clear floor Span, m | Maximum Anchor Bolt Spacing, mm |
|
|
|
| Staggered 12.7 mm Diameter Anchor Bolts | Staggered 16 mm Diameter Anchor Bolts |
| 1. | 2.44 | 450 | 500 |
| 2. | 3.00 | 400 | 450 |
| 3. | 4.00 | 300 | 400 |
| 4. | 5.00 | 275 | 325 |
In Plain Language
Framing supported on flat ICF walls must meet the connection requirements set out in this article, ensuring a secure transition between the concrete wall and the wood or steel framing above.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.