ARCHIVED - 9.23.11.1.(1)

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9.23.11.1.(1)


Objective	OH1 Indoor Conditions
Attribution	[F20,F22-OH1.1,OH1.2,OH1.3] Applies to elements that support or are part of an environmental separator.
Application	Application 1: Minimum dimensions of wall plates, in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.]. Exceptions: except as stated in Sentence 9.23.11.1.(2), which applies to bottom plates: where wall studs are located directly over framing members, or in non-loadbearing walls.
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Intent	Intent 1: To limit the probability of an inability to resist expected gravity and lateral loads, which could lead to: the inadequate distribution of vertical loads to and from studs, which could lead to the excessive deflection or failure of wall plates, inadequate diaphragm action of plates, which could lead to the excessive deflection of walls, or inadequate lateral support for the ends of studs. Where wood-frame construction supports or is part of an environmental separator, this is to limit the probability of the displacement or failure of required environmental separation elements, which could lead to: condensation, precipitation ingress, excessive heat transfer, pollutant ingress, or compromised thermal performance of components intended to resist heat transfer. This is to limit the probability of: inadequate control of temperatures of interior spaces, drafts, relative humidity or water accumulation, the generation of pollutants from biological growth or from materials that become unstable on wetting, or deterioration, which could lead to further compromised integrity of environmental separators. This is to limit the probability of: negative effects on the air quality of indoor spaces, the inadequate thermal comfort of persons, and contact with moisture. This is to limit the probability of harm to persons.
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