I have a series of different penetrations through a 2-hr U336 firewall and would like to have your recommendations for penetration firestopping.
The penetration types are:
6" CPVC water main
2" steel fire sprinkler main
2" PVC fire sprinkler service line
1 1/2" SER cable (Electrical Service Cable). There are quite a few of these, so I am not sure if it is best to seal each penetration or somehow gather them into larger groups.
Hello,
Thank you for reaching out to the Hilti Fire Protection Design Team to assist you with your firestop engineering needs.
For your 2" PVC penetration you can follow W-L-2472, for the 2" steel penetration you can follow W-L-1406, and for the cable penetration you can follow W-L-3307. We do not have a listed system that would allow you to run a 6" CPVC pipe through this wall type; however, 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.
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.)
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,
Zach Rezazadeh
Fire Protection Engineer
Thank you so much for the information. I was expecting the 6" CPVC to be the problem. I assume this will involve a fire collar on each side of the gypsum liner panels? I just submit the question to the engineering judgment page?