I need a bit of assistance locating a UL detail for a circumstance similar to W-L-2818. This detail that I have in front of me is Hilti Firestop Systems Drawing No WL2818a. This detail lists steel studs as a construction feature. Would you be able to direct me to a similar UL detail that lists wood studs for a similar circumstance? That is, PVC plastic pipes penetrating the membrane of a 1-hour rated wall using 2 layers of 5/8" gypsum as the resistive membrane?
Greetings Joe. Thank you for checking out ASK Hilti! We do not have a off the
shelf listed system for you to utilize. Therefore, we will need to create an
Engineering Judgment (EJ) to accommodate the firestop application you described
in your inquiry. We could create a simple EJ solution specifying wood studs in lieu of steel studs
We can address your application through an Engineering Judgment which will be a
custom detail showing your exact application with the firestop components
required to maintain the stated ratings.
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.)
For instructions on how to register along with how to navigate the new platform,
please see the attached document: EJ FAQ.
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.
Thank You for choosing Hilti as your Firestop Experts!
Best Regards,
Raymond Prescott V,
Fire Protection Engineering Team
