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Can we install CAJ-7111 from below, if no access from above

Posted by JOHN SAARIalmost 2 years ago
Can we install CAJ-7111 from below, if no access from above

We need an EJ, because we had to install CAJ-7111 from below, because the contractor blocked all access from above.
Project is Somm Hotel & Spa, Woodinville, WA.

install from below,1 hour rating. Sheetmetal angle install

1 Reply
Posted by Nathaniel Crawfordalmost 2 years ago
Hilti Verified

Hello John - We cannot support this solution as shown in the pictures for CAJ 7111. Depending on the size of the duct and other parameters, CAJ 7104 may work for you. If not, you will need to submit for an Engineering Judgment request. With this being in a concrete floor over metal decking condition, an EJ will likely be required here.

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.) 


Regards,
Nate Crawford - Lead FPE