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For a 2-story commercial building, where the only fire rated walls (1-HR) are the the stair case and the LULA elevator shaft, what is the recommended product to seal the gap between the top of the wall and the bottom of the metal deck?

Posted by Rodolfo Martinabout 3 years ago
For a 2-story commercial building, where the only fire rated walls (1-HR) are the the stair case and the LULA elevator shaft, what is the recommended product to seal the gap between the top of the wall and the bottom of the metal deck?

I have seen some of the Hilty solutions but those are for metal decks with concrete on them. My condition is a Lightweight Insulated concrete, which is basically 6 inches of foam insulation and 2 inches of lightweight concrete on top of it, finished with the SBS membrane. there is first a very thin layer of slurry concrete that is poured to bond the system to the metal deck.
The project is currently starting to develop its 90%. I have attached a wall section that needs to extend the shaft wall to the bottom of the metal deck. I include a typical roof detail that can show the specific condition. this is the detail that we used to discuss the roof system with the client and it is typical. The detail shows the condition of the exterior wall

HEAD OF WALL JOINTS,firestop material

1 Reply
Posted by Michael Vuabout 3 years ago
Hilti Verified

Hello Rodolfo, we unfortunately do not have any listings with your conditions, however, we may be able to provide you with an rated solution through an Engineering Judgement (EJ). I have provided information on how to request one down below.

We are proud to announce the launch of the HILTI CONSTRUCTION PLATFORM (HCP), our company’s new engineering service website. This platform will be the home for all of your Fire Protection Design needs. Instead of emailing a PDF form for a request, the platform enables you to create new Engineering Judgment (EJ) requests, submit revisions to previously completed EJs or connect with an FPE on a question. HCP also enables you to track the status of your request.

You can find more information on how to access this new platform here: http://www.hilti.com/ej (US) or http://www.hilti.ca/ej (Canada.) If you have any questions or require assistance navigating the platform, please call Customer Service for help at 1-800-879-8000 (US) or 1-800-363-4458 (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 a Question anytime, anywhere. You can download the app using the appropriate link below.

Hilti Firestop Selector App – Google Play Store

Hilti Firestop Selector App – Apple App Store

If you have any questions, please reach out to our customer service team at 1-800-879-8000 (US) or 1-800-363-4458 (Canada) for assistance.
 
Best regards,
 
Fire Protection Design Team
Hilti North America