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Welcome to the ICC Codes & Standards Discussion Forum

The Code Council has revisited how best to provide an online, professional Discussion Forum and area within the website that has a sense of community – where Members and nonmembers can provide input and exchange ideas with their peers in the industry. The new Codes & Standards Discussion Forum does just that, as it allows Registered Website Users and ICC Members to discuss the I-Codes in an online community.

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Members Area Codes & Standards Discussion Forum

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Stair Enclosures
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Stair Enclosures By  MTArch

Posts: 12

10/31/2011 12:32:32 PM

2009 IBC Section 707.5.1 We have a non-rated structural steel frame in a type IIB building, if we penetrate the 1hr. stair enclosure with the steel frame, do we need to rate the steel framing beams and columns all the way to the ground with the same 1hr. protection as it is supporting a 1hr. fire barrier?

Thanks!!

MTArch

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Stair Enclosures By  AegisFPE

Posts: 80

10/31/2011 12:47:42 PM

If the penetrating beam supports the stair enclosure, 707.5.1 would require the supporting construction to be rated appropriately. A Fire Protection Engineer could assist in identifying the extent of structural fire resistance required.

If the penetrating beam is not required to support the enclosure, then the penetrating portion should be separated from the stair enclosure per 1022.4. A Fire Protection Engineer could assist in developing an approach to achieve the level of protection required.

www.AEGISengineering.com

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Stair Enclosures By  MTArch

Posts: 12

10/31/2011 2:49:36 PM

Thanks for the time in responding!

MTArch

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