| Feature | Requirement (Typical Part 9 Residential) | |--------|--------------------------------------------| | Snow load | 1.5–3.5 kPa (regional) | | Wind load | 0.5–0.9 kPa | | Frost protection depth | 1.2 m min. | | Ceiling height | 2.1 m min. | | Egress window size | 0.35 m² min., 380 mm min. dimension | | Stair rise/run | 210 mm max / 210 mm min | | R-value (walls) | R-22 effective (RSI 3.85) | | Air leakage | ≤ 2.5 ACH @50 Pa | | Smoke alarms | Hardwired, interconnected | | Plumbing vent | ≥ 3" through roof | | Accessible door width | 850 mm (public buildings) |
The Code is a complex legal document. To make it usable, look for these resources: building codes ontario