I'm working on an existing 7-story building with drinking fountains that stack on every floor. One drinking fountain was removed from a 1-hr rated concrete wall on the 2nd floor and remain on all other floors. I would like to cut and cap the plumbing in the wall to be flush with a new sheetrock finish and install a cover plate/escutcheon over the exposed pipe so it may be utilized in the future. It looks like I need to firestop this penetration but I'm having some trouble finding the right detail for it. The void around the circumference of the pipe is not uniform. It ranges from 3/8"-3/4" deep. Can you offer any suggestions? I attached some photo's. Thank you!
Hey Brent - thanks for using the AskHilti platform. For this condition, we will need to generate an Engineering Judgment.
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: https://www.hilti.com/ej (US) or https://www.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.
Regards,
Nate Crawford - Lead Fire Protection Engineer, Facade