Ontario Building Code (OBC) Compliance

Checklist for converting a single family dwelling unit to two units Ontario Building Code (OBC) ComplianceThe following items should be checked when preparing an application for a second dwelling unit. Although every application is different, this list should represent the bulk of the items that are to be checked. Note: Where Compliance cannot be attained through OBC Part 9, OBC Part 11 can be utilized if the dwelling has been in existence for 5yrs or more. ITEM PART 9 - OBC CODE REFERENCE PART 11 CA fire Resistance Rating assembly between the two dwelling units is to bea 45 min fire rated C152 C147 elements supporting fire ratedassemblies are to have a 45 min fire C147 assemblies around the furnace and othercommon areas ( public corridor, commonlaundry room) are to be a 45 min fire C152 enclosure is to be a 45 min fire rated C121 Sound Transmission Rating

Structural elements supporting fire rated assemblies are to have a 45 min fire rating 9.10.8.3. C147 3. Walls assemblies around the furnace and other common areas (i.e. – public corridor, common laundry room) are to be a 45 min fire rated separation 9.10.9.14 9.10.9.15 C152 4. Exit enclosure is to be a 45 min fire rated separation 9.9.4.2. C121

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  Fire, Separation, Corridors

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