9.27.3.3.(2)

Objective

OS2 Structural Safety

Attribution

Intent

Intent 1:

To limit the probability of:

  • excessive air infiltration or “wind-washing,” which could lead to condensation, and
  • precipitation ingress.

This is to limit the probability of the failure of required environmental separation elements, which could lead to deterioration, which could lead to compromised structural integrity of exterior walls, which could lead to harm to persons.

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