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9.23.6.2.(2)
OS2OP2OH4OS3OH1
ObjectiveOS2 Structural Safety
Attribution
[F22-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Anchorage of exterior columns and posts, or of supported joists or beams, in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.], where:
  • the columns or posts support balconies, decks, verandas or other exterior platforms, and
  • the distance from finished ground to the underside of the joists is not more than 600 mm.
Exceptions: 
except as stated in Sentence 9.23.6.2.(3), which applies to columns or posts supporting small, single storey balconies, decks, verandas or other exterior platforms that do not support a roof and where movement will not adversely affect the structure to which the platform is attached.
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Intent
Intent 1: 
To limit the probability of an inability to resist expected wind and lateral loads, which could lead to platforms lifting or sliding off foundations.
This is to limit the probability of compromised structural integrity, which could lead to:
  • the structural collapse of wood-frame construction, or
  • for construction that supports environmental separators, the excessive deformation, displacement or failure of required environmental separation elements, which could lead to deterioration, which could lead to further compromised structural integrity.
This is to limit the probability of harm to persons.
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