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3.1.9.3.(4)
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Application
Application 1: 
Combustible totally enclosed raceways that are embedded in a concrete floor slab installed in an assembly required to have a fire-resistance rating where the concrete cover between the raceway and the bottom of the slab is not less than 50 mm, in buildings described in Sentence 1.3.3.2.(1) of Division A.
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Intent
Intent 1: 
To exempt certain service equipment from the application of Sentence 3.1.9.2.(1) if certain conditions are met, on the basis that the equipment is deemed to insignificantly contribute to the growth and spread of fire.
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