1 Hour rating of a 4" PVC pipe penetration - 2 Hr assembly needing only 1 Hr rating, as 2 HR was to accomplish STC rating, See 5/A504a attached

Posted by Scott Parksover 5 years ago

1 Hour rating of a 4" PVC pipe penetration

A 4" schedule 40 pipe has penetrated a wall assembly UL Design No. U350, Is there a steel pipe with FS-1 option. I believe the Firestop Collar CP 643N is an option, but would prefer Steel Pipe Sleeve.

2 Hr assembly needing only 1 Hr rating,as 2 HR was to accomplish STC rating,See 5/A504a attached

A504a_ BUILDING ASSEMBLIES Rev.2 markup.pdf514.46 KB

2 Replies

Posted by Travis Pearceover 5 years ago

Hilti Verified

Hello,

I would recommend W-L-2078 or W-L-2340 for your Sch. 40 PVC through penetration of a gypsum wall. These systems will get you going in the right direction and seem to be what you are looking for from your comments.

If you have anymore questions please feel free to reach out through our Hilti Construction Platform. 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/content/hilti/W1/US/en/engineering/design-centers/firestop/engineering-judgments.html (US) or https://www.hilti.ca/content/hilti/W1/CA/en/engineering/design-centers/firestop/engineering-judgments.html (Canada.)

For instructions on how to register along with how to navigate the new platform, please see the attached document: EJ FAQ.

If you have any questions, please reach out to our customer service team at 1-800-879-8000 for assistance.

Thank you,
Travis Pearce
Fire Protection Engineer

EJ FAQ US .pdf724.85 KB

WL2340c.pdf149.1 KB

WL2078q.pdf103.43 KB

Posted by Sawyer Fischerabout 5 years ago

I need a detail for a steel pipe penetrating an interior plaster wall.

pipe penetration