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9.20.5.2.(4)
ApplicationIntent
OS2OP2OH1OS1OH4OS3
ObjectiveOS2 Structural Safety
Attribution
[F80-OS2.1]
[F80-OS2.3] 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, in 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:
  • excessively rapid corrosion, which could lead to the excessive deflection or structural failure of lintels, or
  • the accumulation of corrosion by-products between lintels and masonry, which could lead to compressive stresses.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural failure of masonry construction,
  • where masonry construction is part of an environmental separator, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity, or
  • in assemblies exposed to moisture or the exterior, damage and deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of harm to persons.
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