ARCHIVED - 9.20.5.2.(2)

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9.20.5.2.(2)


Objective	OP2 Structural Sufficiency of the Building
Attribution	[F20,F22-OP2.1,OP2.4] [F20,F22-OP2.3] Applies to elements that support or are part of an environmental separator or are exposed to moisture.
Application	Application 1: Steel angle lintels supporting masonry veneer over openings, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9]: where the wall height does not exceed 11 m in height above the foundation wall, and in which the roof or floor system above the first storey is not of concrete construction.
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Intent	Intent 1: To limit the probability of: lintels that are inadequate in size or have an excessive span, which could lead to the excessive deflection or failure of lintels, which could lead to the cracking or structural failure of masonry veneer over openings, or an inadequate bearing area between lintels and supported masonry veneer, which could lead to shear or compression failure of masonry veneer. This is to limit the probability of: compromised structural integrity of masonry construction, where masonry construction is part of an environmental separator, the displacement or failure of required environmental separation elements, which could lead to deterioration, in assemblies exposed to moisture or the exterior, damage and deterioration, or an inability to resist expected loads, which could lead to: the excessive movement or deformation of walls, or the excessive deflection or vibration of floors. This is to limit the probability of: the space being unsuitable for its intended use, compromised operation of windows or doors, or damage to the building.
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