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5.8.1.1.(1)
ApplicationIntent
OH1OS2+
Application
Application 1: 
Drainage for exterior foundation walls and floors-on-ground, where:
  • the foundation wall or floor is subject to continuous hydrostatic pressure, or
  • drainage can be shown to be unnecessary.
This applies to building materials, components or assemblies and their interfaces 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].
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Intent
Intent 1: 
To exempt certain situations from the requirements for drainage in the latter part of Sentence 5.8.1.1.(1), on the basis that drainage will be ineffective or the native soil provides effective drainage.
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