We have a situation where a shaft wall is being penetrated by an MEP seismic brace and 4" x 4" x 1/4" secondary steel member through a shaft wall and the IOR is requesting a detail but I have not been able to come up with one that notes that CP606 can be used to seal these penetrations. This shaft wall is being built per UL438. Please see the attached pictures. Annular space should be 1/4" or less.
Can you please provide an EJ for these situations?
Hello,
Thank you for reaching out to the Hilti Fire Protection Design Team to assist you with your firestop engineering needs.
We do not have a listed system for this specific type of support member penetration; 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