The Ontario Building Code | General

9.15.1.1. General

(1) Except as provided in Articles 9.15.1.2. and 9.15.1.3., this Section applies to,

(a) concrete or unit masonry foundation walls and concrete footings not subject to surcharge,

(i) on stable soils with an allowable bearing pressure of 75 kPa or greater, and

(ii) for buildings of wood frame or masonry construction,

(b) wood frame foundationwalls and wood or concrete footings not subject to surcharge,

(i) on stable soils with an allowable bearing pressure of 75 kPa or greater, and

(ii) for buildings of wood frame construction, and

(c) flat insulating concrete form foundation walls and concrete footings not subject to surcharge,

(i) on stable soils with an allowable bearing pressure of 75 kPa or greater, and

(ii) for buildings of light frame or flat insulating concrete form construction that are not more than 2 storeys in building height, with a maximum floor to floor height of 3 m, and containing only a single dwelling unit.

Note: On July 1, 2017, Subclause 9.15.1.1.(1)(c)(ii) of Division B of the Regulation is revoked and the following substituted: (See: O. Reg. 139/17, s. 121)

(ii) for houses of light frame or flat insulating concrete form construction that are not more than 2 storeys in building height, with a maximum floor to floor height of 3 m.

(2) Foundations for applications other than as described in Sentence (1) shall be designed in accordance with Section 9.4.

(3) Where a foundation is erected on filled ground, peat or sensitive clay, the footing sizes shall be designed in conformance with Section 4.2.

(4) For the purpose of Sentence (3), sensitive clay means the grain size of the majority of the particles is smaller than 0.002 mm, including leda clay.