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5.9.1.2.(1)
OH3
ObjectiveOH3 Noise Protection
Attribution
Application
Application 1: 
Minimum sound transmission class rating of construction separating dwelling units from every other space in the building.
This applies to building materials, components, 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 limit the probability that excessively high sound levels will be transmitted into a dwelling unit from other parts of the building, which could lead to persons being exposed to excessively high sound levels in the dwelling unit, which could lead to negative effects on the psychological well-being of persons.
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