The Ontario Building Code | Anchoring of Roof Framing to Top of Flat Insulating Concrete Form Walls
9.20.17.6. Anchoring of Roof Framing to Top of Flat insulating Concrete Form walls
(1) Roof framing supported on the top of flat insulating concrete form walls shall be fixed to the top plates, which shall be anchored to the wall with anchor bolts,
(a) not less than 12.7 mm in diameter, and
(b) spaced not more than 1.2 m o.c.
(2) The anchor bolts described in Sentence (1) shall be placed in the centre of the flat insulating concrete form wall and shall be embedded not less than 100 mm into the concrete.
(3) Attachment of roof framing to wood top plates shall be in accordance with Table 9.23.3.4.
In Plain Language
Roof framing must be anchored to the top of flat ICF walls as set out in this article, ensuring the roof structure is securely tied down to the wall below.
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.