ARCHIVED - 9.27.9.3.(1)

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9.27.9.3.(1)


Objective	OH1 Indoor Conditions
Attribution	[F61-OH1.1,OH1.2,OH1.3]
Application	Application 1: Edge sealing for plywood cladding, 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 water penetrating the edges of plywood cladding sheets, which could lead to swelling of plies or deterioration of adhesive. This is to limit the probability of: an inadequate resistance to accidental impact forces or wind loads, which could lead to excessive deflection, the deformation, displacement or cracking of cladding, the opening of joints, or the failure of caulking, or where support spacing does not exceed 400 mm and panel-type plywood cladding is installed as bracing to satisfy Subclause 9.23.10.2.(2)(b)(i), an inability to resist lateral loads, which could lead to racking of exterior walls, which could lead to the excessive deformation, displacement or failure of required environmental separation elements. 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, deterioration, which could lead to compromised integrity of exterior walls or elements protected by exterior walls, or water accumulation in interior spaces. 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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