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9.23.8.2.(1)
ApplicationIntent
OS2OP2OH1OS1OS3OH4
ObjectiveOS2 Structural Safety
Attribution
[F80-OS2.1]
[F80-OS2.3] Applies to elements that support or are part of an environmental separator.
Application
Application 1: 
Surface protection for exterior steel beams that are:
  • used to support floors, and
  • exposed to the weather.
This applies in wood-frame constructions to which Section 9.23. applies [see Sentence 9.23.1.1.(1) for application of Section 9.23.].
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Intent
Intent 1: 
To limit the probability of inadequate moisture protection, which could lead to an unacceptably high rate of surface corrosion, which could lead to a loss of strength, which could lead to an inability to resist expected gravity loads.
This is to limit the probability of compromised structural integrity, which could lead to:
  • structural collapse, 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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