Code Library › Volume 1 › Section 9.20 — Masonry and Insulating Concrete Form
PART 9 — HOUSING AND SMALL BUILDINGSUpdated for the 2024 Ontario Building Code

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 referred to 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 the 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 Floor Ledgers to Flat Insulating Concrete Form Walls Forming Part of Sentence 9.20.17.5.(3) Maximum Anchor Bolt Spacing, mm Maximum Clear Floor Span, m Staggered 12.7 mm Diameter Anchor Bolts Staggered 16 mm Diameter Anchor Bolts 2.44 450 500 3.00 400 450 4.00 300 400 5.00 275 325

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.