I need a conduit penetration detail for a UL451 assembly

Hi Craig,

Thank you for reaching out to the Hilti Fire Protection Design Team to assist you with your firestop engineering needs. Based of the U451 wall assembly, these three conditions will be three separate EJs. Could you please submit separate request for each of them through the HILTI CONSTRUCTION PLATFORM (HCP)? Thank you

The HILTI CONSTRUCTION PLATFORM (HCP) is 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


Thank you,

Anthony Nguyen
Fire Protection Engineer

please also provide details for low volt penetration and insulated plumbing