ARCHIVED - 9.28.4.2.(1)

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9.28.4.2.(1)


Objective	OH1 Indoor Conditions
Attribution	[F20-OH1.1,OH1.2,OH1.3]
Application	Application 1: Stucco applied over not less than 1.19-mm-diam galvanized wire that is applied horizontally to the framing at vertical intervals of not more than 150 mm, or over paper-backed welded wire metal lath, on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent	Intent 1: To limit the probability of inadequate backing support, which could lead to inadequate strength to resist impact or other lateral loads, which could lead to the deformation or cracking of stucco. This is to limit the probability of: precipitation or meltwater ingress, or compromised thermal performance of components intended to provide resistance to heat transfer. This is to limit the probability of: an inadequate control of temperatures of interior spaces or relative humidity, the generation of pollutants from biological growth or from materials that become unstable on wetting, or deterioration, which could lead to compromised integrity of exterior walls or elements protected by exterior walls. 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. Intent 2: To exempt constructions from the application of Sentence 9.28.1.1.(1), where adequate backing support is provided by other means.
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