Ontario Building Code - Section 1040

10.3.2.2. 2024 Building Code Compendium 6 Division B – Part 10 Table 10.3.2.2.-B (1) Additional Upgrading for Multiple Major Occupancies Forming Part of Sentence 10.3.2.2.(9) New Major Occupancy Code Requirements Compliance Alternative All Table 3.1.3.1. and Subsection 9.10.9. Where: For Existing Building Reduce to If Sprinklered Reduce to 1 h rating required 45 min 30 min 2 h rating required 1.5 h 1 h 3 h rating required 2 h 1.5 h Notes to Table 10.3.2.2.B: (1) For buildings with multiple major occupancies only, where there is a change in major occupancy. (10) The performance level of a building is reduced where the building after the change of major occupancy will not comply with Article 3.1.3.2. or 9.10.9.14. (11) The performance level of a building or part of a building is reduced where, after a change of major occupancy, (a) the total daily design sanitary sewage flow of the new major occupancy, calculated in accordance with Article 8.2.1.3., exceeds the capacity of any component of a sewage system serving the building, or (b) the type or amount of sanitary sewage that will, under the new major occupancy, be discharged to a sewage system serving the building is prohibited by Article 8.1.3.1. (12) The performance level of an existing building or part of an existing building is reduced where, (a) the use of the building or part of the building is changed to a retirement home, and (b) any of the following applies: (i) the retirement home is not sprinklered throughout, (ii) Clause 3.2.6.8.(1)(b) or (c), as applicable, requires that a voice communication system conforming to Article 3.2.4.22. be provided in the building and such a system is not provided in the building, or (iii) the retirement home contains one or more doors to suites or sleeping rooms not within suites, other than doors leading directly to the exterior, that are not equipped with self-closing devices. Section 10.4. Compliance Alternatives 10.4.1. Compliance Alternatives 10.4.1.1. Substitution (1) Except as provided in Sentence (3), a compliance alternative to a requirement contained in Part 3, 4, 6 or 8 that is shown in Tables 11.5.1.1.-A, 11.5.1.1.-B, 11.5.1.1.-C, 11.5.1.1.-D/E or 11.5.1.1.-F may be substituted for the requirement where the chief building official is satisfied that compliance with the requirement is impracticable because, (a) of structural or construction difficulties, or (b) it is detrimental to the preservation of a heritage building. (2) Except as provided in Sentence (3), a compliance alternative to a requirement contained in Part 9 or 12 shown in Tables 11.5.1.1.-C, 11.5.1.1.-D/E or 11.5.1.1.-F may be substituted for the requirement without satisfying the chief building official that the requirement is impracticable. (3) Where the building has been in existence for less than five years, compliance alternatives may only be used in respect of requirements of this Division that are referenced in Sentences 10.3.2.2.(3), (5) and Table 10.3.2.2.-B.