Floor Penetrations

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raider1 said:
I haven't see that.

It makes no sense to use an intumescent caulk or pad on a metallic conduit. The reason for the use of an intumescent caulk is that it expands to fill the void left when a combustable material burns or melts away. I am not saying that there arn't any assemblies that use it, just that I haven't seen them.

Chris
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Now you can say you have.... Any opening around any pentration be it PVC or RMC or anything in between (EMT) would need to be filled - with something. Often combinations of mineral wool, and intumesant puddy.
(for gaps around EMT)
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/wl/WL1175_020806.pdf
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/caj/CAJ0058_021406.pdf
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/caj/CAJ8107_042705.pdf

Not to confuse the OP, if the conduit is poured in place and does not have any gap - no fire-stop would be needed. That said many construction spec's in siezmic zones dont allow thru-penetrations to be poured in place due to movement - but that may not apply to his area, or by their buildings engineers.... Some others may require spacing of them.
 
e57 said:
Now you can say you have.... Any opening around any pentration be it PVC or RMC or anything in between (EMT) would need to be filled - with something. Often combinations of mineral wool, and intumesant puddy.
(for gaps around EMT)
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/wl/WL1175_020806.pdf
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/caj/CAJ0058_021406.pdf
http://www.us.hilti.com/data/techlib/docs/ul firestop drawings/caj/CAJ8107_042705.pdf

Not to confuse the OP, if the conduit is poured in place and does not have any gap - no fire-stop would be needed. That said many construction spec's in siezmic zones dont allow thru-penetrations to be poured in place due to movement - but that may not apply to his area, or by their buildings engineers.... Some others may require spacing of them.
Click to expand...

Yes, now I can say that I have.;):)

There are many UL tested assemblys for thru-penetrations. These are utilizing a putty pad manufactured by Hilti, but there are literally hundreds of tested assemblies.

Chris
 
raider1 said:
Yes, now I can say that I have.;):)

There are many UL tested assemblys for thru-penetrations. These are utilizing a putty pad manufactured by Hilti, but there are literally hundreds of tested assemblies.

Chris
Click to expand...
TRUE - not looking to pick a bone wit cha - but I could find many more using intumescent - Really I have not come across many that dont use intumescent puddy, pads or sleeves of some nature or in combination with other stuff. One that I can think of that doesn't is 3M's mortar - which I have not used. I assume it has never seen it been spec'ed here due to it would crack and fall out if there were a quake. ;)
 
dcspector said:
John and pierre I thought we covered this on post #6. I agree as well just the Annular space in a rated assembly would need fire blocked/stop/caulk. If the sleeves or EMT, etc, etc. are set and the deck is poured around the perimeter of the mentioned then it is a done deal.
Click to expand...

Oh we did. I was just letting Pierre know that great minds think alike.:D

I could include you and Roger in there if you'ld like.:D:D
 
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