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2.2.2.1.(1)
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Application
Application 1: 
Protection of openings [closures] in fire separations in existing buildings.
Application 2: 
This also applies to the repair of closures, as stated in Sentence 2.2.2.2.(1).
Note: The National Building Code of Canada is most often applied to existing buildings when an owner wishes to rehabilitate a building, change its use, or build an addition; or when an enforcement authority decrees that a building, or a class of buildings, be altered for reasons of public safety. It is not intended that either the NBC or the NFC be used to enforce the retrospective application of new requirements in the NBC to existing buildings. [See Appendix Note A-2.1.3.1.(1).]
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Intent
Intent 1: 
To expand the application of the National Building Code of Canada [specifically NBC Articles 3.1.8.4. to 3.1.8.17. and Subsections 3.1.9. and 3.2.8.] to existing buildings, in regard to the protection of openings [closures] in fire separations.
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