The Ontario Building Code | Exterior Concrete Stairs
188.8.131.52. exterior Concrete Stairs
(1) exterior concrete stairs with more than two risers and two treads shall be,
(2) Stairs described in Sentence (1), when cantilevered from the wallhehandyforce.com/interior/basement-renovations/" title ="Toronto Basement renovator">foundationwall, shall be constructed and installed in conformance with Subsection 9.8.10.
(3) The depth below ground level for foundations for exterior steps shall conform to the requirements in Section 9.12.