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5.6.1.3.(2)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Installation of masonry to provide protection against precipitation ingress on vertical assemblies described in Sentence 5.1.2.1.(1) that are installed in buildings to which Part 5 applies [see Sentence 1.3.3.2.(1) of Division A for application of Part 5].
Application 2: 
This also applies to cladding assemblies installed on buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] where:
  • the cladding assembly is not addressed in Section 9.27., or
  • the cladding assembly does not comply with the prescriptive requirements of Section 9.27.
Exceptions: 
except as stated in Sentence 5.6.1.1.(2), which applies where a lack of control of precipitation ingress will not adversely affect health, safety, the intended use of the building or the operation of building services.
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Intent
Intent 1: 
To limit the probability that the performance of the installed masonry, with respect to integrity and protection against precipitation ingress, will fall significantly below expectations, which could lead to precipitation ingress into or through assemblies.
This is to limit the probability of:
  • the inadequate structural strength and integrity of the installation, which could lead to falling masonry components, or
  • deterioration, which could lead to compromised structural integrity of the separators or of elements supported or protected by the separators.
This is to limit the probability of structural failure, which could lead to harm to persons.
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