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9.13.2.5.(1)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Installation of dampproofing material over parging or concrete on walls below ground level that are in contact with the ground, where the ground level outside is higher than the ground level inside, 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 9.13.3.1.(1), which applies to foundation walls that are subject to hydrostatic pressure.
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Intent
Intent 1: 
To limit the probability of the ingress of moisture from the ground, not under hydrostatic pressure, which could lead to deterioration, which could lead to compromised structural integrity of elements supported or protected by the walls, which could lead to harm to persons.
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