We have been instructed to fire rated a steel deck fluted ceiling with hat channel and drywall secured to the underside of open web steel joists. However our walls are built to the roof deck, thus the drywall ceiling is non-continous as a result of the wall partitions.
Is there a way to still deem the ceiling fire rated with the walls interuppting continuity? Can anything be done to the walls that would make it code compliant/acceptable to architect in Canada? Anticipated detail attached.
The steel deck is currently covered with an incorrect application and no intumescent can be applied
Hi Derek,
There is no existing tested firestop system for this application. The case will need to be evaluated for an Engineering Judgement so custom firestop details can be provided accordingly. If you would like to proceed with that, kindly submit an Engineering Judgement request through the Hilti Construction Platform through the link below:
https://constructionplatform.hilti.com/dashboard
For any additional questions, kindly send your inquiries directly to cafirestop@hilti.com