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Posted By: ccdave fire pads on boxes in rated walls - 04/22/04 12:19 AM
Could someone point out where else other than 300.21 does the code require pads on the back of steel boxes in a common rated fire wall between two seperate apts?
Thanks much-dave
Posted By: Ryan_J Re: fire pads on boxes in rated walls - 04/22/04 12:22 AM
Hi Dave. Take a look at the fine print note (FPN) under 300.21, and you will notice that it is mainly a building code and UL issue.
Posted By: Roger Re: fire pads on boxes in rated walls - 04/22/04 12:46 AM
Dave, as Ryan says, fire stopping and rated assemblies are outside the NEC.

There may be situations where pads may not be an approved assembly method between dwelling units.

You need to know the rating of the wall which should be information provided by the Architect.

Roger
Posted By: George Corron Re: fire pads on boxes in rated walls - 04/22/04 12:59 AM
If it is a fire wall, you cannot have a opening within the same interstitial space. That is from the BOCA code, and the IBC.

If it means anything to you, we used tons of 'em at the Pentagon..... a building with a known fire problem.

If you need, reply here and I can provide a reference at work tomorrow.
Posted By: ccdave Re: fire pads on boxes in rated walls - 04/23/04 03:43 PM
thanks for your input--dave
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