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9.24.3.2.(2)
OS1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Attachment of steel studs that allows for their expansion, in non-loadbearing exterior and interior walls required to have a fire-resistance rating, 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 Article 9.24.3.6., which applies to attachments between studs and bottom runners only, by means of screws, crimping or welding around wall openings and elsewhere where necessary to keep the studs in alignment during construction.
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Intent
Intent 1: 
To limit the probability that the connection of studs to top and bottom runners will be rigid, which could hinder the linear expansion of steel studs during a fire, which could lead to the buckling of studs, which could lead to the premature failure of fire-rated assemblies, which could lead to harm to persons.
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