Ontario Building Code answers with the article and page, every Part 9 span table, and a 3D check of your walls, floors, roofs and beams. Built for contractors, on your phone.

Lay out a wall with its doors and windows. WorkToCode frames it, checks the studs and every header against the tables for what the wall carries and your town's snow load, and turns the member red with the size that works.

Rafters, roof and ceiling joists, floor joists, headers, built-up, glulam and steel beams, studs for tall walls, stud posts and nailing. Pick the species, grade, size and spacing and get one number, with the table and page.

"Max rise for stairs in a house?" comes back with 200 mm and Article 9.8.4.1, page 742. Every answer quotes the code; if the text doesn't cover it, WorkToCode says so instead of guessing.
Every span, spacing and snow load comes straight from the 2024 Ontario Building Code Compendium (January 16, 2025 update), with the table and page beside it so you can show it to the inspector.
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No. WorkToCode is an independent tool from webfaCeMEdia and is not affiliated with or endorsed by the Government of Ontario. It works from the published 2024 Compendium. Your building official has the final say, and an engineer where the code calls for one.
Part 9 of Division B (houses and small buildings) and the supplementary standards in the Compendium, with the Part 9 span and framing tables built in.
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