I need a 2hr fire stop for a HVAC line set through a 9” concrete floor that consists of (2) 3/8” copper tubes. (1) has 1/2 foam insulation, the other has 3/4” foam insulation. The core drill size is 4”.
Hi Kevin - please see the attached system C-BJ-8024. You will need to get 1/2" annular between the line-sets for this system. You can additionally search for more systems using the firestop selector on the Hilti Construction Platform.
Hilti is proud to announce the launch of our engineering website, the HILTI CONSTRUCTION PLATFORM (HCP). This platform will be the home for all of your Fire Protection Engineering needs, including Engineering Judgment requests. You can find more information on how to access this new platform here: hilti.com/ej (US) or hilti.ca/ej (Canada.)
Along with HCP, Hilti is excited to announce our new mobile app for all your firestop needs: Hilti Firestop Selector. Using the Firestop Selector app gives you easy access to the Hilti Fire Protection Design Team from the jobsite, on the road, or in the office to request a new EJ, an EJ Revision, or ask a Question anytime, anywhere. You can download the app using the appropriate link below.
Regards,
Nate Crawford - Lead FPE
