The most interesting shift in recent OBC interpretations (and Supplementary Standard SB-10) revolves around high-rise egress widths.
| Role | Responsibility | |------|----------------| | | Ensure permit obtained, construction follows OBC. | | Designer (architect/engineer) | Prepare compliant drawings. Some Part 9 houses may not require a designer if builder assumes responsibility. | | Municipal Building Department | Plan review, inspections, enforcement. | | Ministry of Municipal Affairs & Housing | Writes and updates the OBC, provides training and interpretations. | | Building Materials Evaluation Commission (BMEC) | Appeals regarding material equivalence. | ontario building code