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9.25.2.3.(7)
OH1OS2
ObjectiveOS2 Structural Safety
Attribution
Application
Application 1: 
Protection of insulation located in areas where it may be subject to physical damage, in walls, ceilings, roofs or floors separating heated space from unheated space, 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 9.25.2.3.(6), which applies to insulation that is exposed to the weather.
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Intent
Intent 1: 
To limit the probability that insulation will be physically damaged, which could lead to compromised thermal resistance, which could lead to excessively low temperatures of interior surfaces or within assemblies.
This is to limit the probability of condensation, which could lead to deterioration, which could lead to compromised structural integrity of assemblies acting as or protected by environmental separators, which could lead to harm to persons.
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