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9.16.3.1.(1)
ApplicationIntent
OH1OS2OS3
ObjectiveOS2 Structural Safety
Attribution
[F60-OS2.3]
Application
Application 1: 
Grading or drainage for floors supported on ground or on granular fill which do not provide structural support for the superstructure, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
Exceptions: 
except:
  • as stated in Sentence 9.16.3.2.(1), which applies to a floor-on-ground where groundwater levels may cause hydrostatic pressure beneath the floor-on-ground, and
  • where protection against the ingress of water under the floor can be shown to be unnecessary.
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Intent
Intent 1: 
To limit the probability of excessive moisture loading on floors-on-ground, which could lead to compromised structural integrity of floors-on-ground, which could lead to the ingress of moisture from the ground, which could lead to the deterioration of building elements, which could lead to harm to persons.
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