Ul system pdf download

The way a sleeve is packed and sealed are directly proportional to the amount of time a system will suppress a fire. For example, a 1 inch thickness of intumescent putty may be sufficient for a 1 or 2 hour rated penetration but a 3 or 4 hour application might require a 2 or more inch thickness in the ends of a sleeve system.

Several fill material manufacturers have developed, tested, or engineered through penetration systems combining our sleeves and their fill material. The first letter of the listing designation identifies the type of penetrated fire-rated structure:. A for concrete floors less than or equal to 5 inches thick. J for concrete or masonry walls less than or equal to 8 inches thick.

K for concrete or masonry walls greater than 8 inches thick. This number indicates the specific length of time a barrier can withstand fire before being consumed or before permitting the passage of flame through an opening. This ensures the temperature on the side of the wall away from the flame does not reach the flash point of any materials on that side of the wall. The test is administered at ambient temperature and at F to determine the actual performance of fire-stopping materials at different temperatures.

A Class Two listing requires the material to be resistant to a foot water pressure head. Finally, a Class Three listing requires the material to be resistant to See All Articles. LinkedIn YouTube. Firestop Certification: Customer Testimonials. The Automotive Firewall. How to Protect Race Car Drivers. UL Finding — Putty vs. UL Standards encompass UL's extensive safety research and scientific expertise. With over a century of experience in the development of more than 1, Standards, UL is an accredited standards developer in the US and Canada.

In extending its global public safety mission, UL Standards partners with national standards bodies in countries around the world to build a safer, more sustainable world. Learn more about how we are modernizing our technology, operations and approach to stakeholder outreach to deliver a world class experience and further our global impact.

Follow our journey. Stay informed about UL Standards development activities and news. Join our LinkedIn group and follow us on Twitter.