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Some building codes require construction to be fire rated.
MBMA has conducted fire tests at Underwriter's Laboratory, Intertek (Omega Point) and Factory Mutual that resulted in fire protection details that are UL listed. Details address roof/ceiling, wall, column, joint, and wall continuity systems.
MBMA also published the Fire Resistance Design Guide for Metal Building Systems. This guide contains the most complete and up-to-date information on the subject of fire resistance for metal building systems. For more information about this guide, please click here.
We provide below a summary table with hyperlinks that will take you to UL's Online Fire Resistance Directory for all the MBMA / UL tested fire-resistance rated assemblies. (Please note these links will take you away from the http://www.mbma.com website).
ESFR Sprinkler Tests
In addition to the fire testing on building materials, MBMA conducted fire tests on ESFR (Early Suppression Fast Response) sprinklers. ESFR sprinklers were originally developed to protect high hazard warehouse storage occupancies with Classes I through IV combustibles such as cartoned plastics. The benefits of using ESFR sprinklers include the reduction, or elimination of in-rack sprinklers in storage occupancies. ESFR sprinklers deliver a large volume of water so one sprinkler is often capable of driving back fires or extinguishing them completely. Click here for more complete information on ESFR sprinklers.
|CONSTRUCTION TYPE||UL RATED ASSEMBLY||HOURS||DESCRIPTION|
|Column||Built-up||X524||1, 2||Gypsum Board|
|Channel||X530||1, 2||Gypsum Board|
|P265||1, 1.5||Acoustical Tile|
|P268||1, 1.5||Acoustical Tile|
|Wall||Load Bearing||U425||0.75, 1, 1.5, 2||Gypsum Board|
|U489||1, 1.5, 2||Gypsum Board|
|Non-Load Bearing||U419||1, 2, 3, 4||Gypsum Board|
|V421||1, 2||Gypsum Board - 48" max. o.c. girts|
|W404||1||Gypsum Board - 90" max. o.c. girts|
|W413||2||Gypsum Board - 90" max. o.c. girts and mineral wool|
|W447||1, 2||Gypsum Board - 48" max. o.c. girts|
|Joints||Purlin - Inside Wall||HW-D-0488||1||Rated Ceiling Joint: Gypsum Board & Fire Caulk|
|Purlin - Perpendicular to Wall||HW-D-0489||1||Rated Ceiling Joint: Gypsum Board & Fire Caulk|
|Purlin - Parallel to Wall||HW-D-0490||1||Rated Ceiling Joint: Gypsum Board & Fire Caulk|
Wall Continuity Joint Systems
|Purlin - Inside Wall||CJ-D-0005||1||Non-Rated Ceiling Joint: Gypsum Board & Fire Caulk|
|Purlin - Perpendicular to Wall||CJ-D-0006||1||Non-Rated Ceiling Joint: Gypsum Board & Fire Caulk|
|Purlin - Parallel to Wall||CJ-D-0007||1||Non-Rated Ceiling Joint: Gypsum Board & Fire Caulk|