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9.29.2.2.(1)
ApplicationIntent
OH1OS2OS1OP2
ObjectiveOS1 Fire Safety
Attribution
[F80-OS1.2] Applies where interior finishes are required to act as fire protection for foamed plastics or to contribute to the required fire resistance of assemblies.
Application
Application 1: 
Acceptable materials for waterproof walls of shower stalls and around bathtubs, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability of repeated water exposure of moisture-vulnerable interior finishes, which could lead to the deterioration of interior finishes.
This is to limit the probability of:
  • where interior finishes are required to protect foamed plastics, a loss of fire protection, or
  • where interior finishes are installed to contribute to the required fire resistance of assemblies, a loss of fire resistance.
This is to limit the probability of the growth and spread of fire, which could lead to harm to persons.
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