I am looking for firestopping details for all common penetrations for a 1 hour rated assembly with cold-formed metal framed trusses with 3/4" plywood subflooring 3/4" Gypcrete topping and 5/8" type X GWB on the ceiling, meeting UL H524. I do not see any sort of fire-stopping details for this kind of assembly. Is it possible to firestop this, given the lack of solid wood blocking or concrete mass to firestop against?
Hello,
Unfortunately, we do not have any systems for an H500 series assembly, but we can provide an Engineering Judgement (EJ) for it. I've included information on how to submit a request below. If you would like, you can call in at 800-879-8000, and we can get you the contact information of your local Fire Protection Specialist and they may be able to assist you any additional firestopping needs.
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.
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 or use the following link to access the How-To Videos for HCP on YouTube: Hilti Fire Protection Software How-To Videos Playlist
Michael Vu
Fire Protection Design Team
Hilti North America
3701 W. Royal Lane, Suite 100, Irving, TX 75063
P 1-800-879-8000
E usfirestopeng@hilti.com
www.hilti.com/firestop