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6.2.9.5.(1)
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Protection of surrounding building elements from pipes carrying steam or hot water at a temperature above 120°C that pass through combustible floors, ceilings or walls, in buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], with respect to heating systems, other than those serving individual dwelling units, as stated in Sentence 9.33.1.1.(2).
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Intent
Intent 1: 
To limit the probability that combustible floors, ceilings or walls will be ignited by heat radiating from the pipes, which could lead to harm to persons.
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