Duct chase diagram

**Jim Luttrall** · 01-25-2009, 11:58 AM

Does anyone have a diagram of a duct chase showing the proper fire/draft stopping at the attic floor level?
I have a vertical duct chase that is open at the attic floor level and trying to get a good visual for a report.
Thanks, Jim

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**Billy Stephens** · 01-25-2009, 12:48 PM

Originally Posted by Jim Luttrall

Does anyone have a diagram of a duct chase showing the proper fire/draft stopping at the attic floor level?
I have a vertical duct chase that is open at the attic floor level and trying to get a good visual for a report.
Thanks, Jim

.
All I have.

Maybe someone else has better.

.

A.D. Miller · 01-25-2009, 01:55 PM

http://multimedia.3m.com/mws/mediawe...Vs6EVs6E666666--

**Jim Luttrall** · 01-25-2009, 02:30 PM

Aaron, got another way into that? The link did not work (looked like it was too long for Brian's site. Maybe send a pm or email?
Thanks, Jim

**Jim Luttrall** · 01-25-2009, 02:37 PM

I just found this and it has some good graphics for attics.

http://www.road2la.org/rental-docs/g...nes_101007.pdf

Still looking for more though.

A.D. Miller · 01-25-2009, 02:37 PM

Originally Posted by Jim Luttrall

Aaron, got another way into that? The link did not work (looked like it was too long for Brian's site. Maybe send a pm or email?
Thanks, Jim

Sorry, I did not check the link once posted . . .

A.D. Miller · 01-25-2009, 02:39 PM

Originally Posted by Jim Luttrall

I just found this and it has some good graphics for attics.

http://www.road2la.org/rental-docs/g...nes_101007.pdf

Still looking for more though.

Better than mine. I'll keep looking too.

**Jerry Peck** · 01-25-2009, 02:54 PM

Originally Posted by A.D. Miller

Sorry, I did not check the link once posted . . .

That's for penetrating through a fire-resistance rated assembly, which is not the case in a dwelling unit.

A.D. Miller · 01-25-2009, 02:57 PM

Originally Posted by Jerry Peck

That's for penetrating through a fire-resistance rated assembly, which is not the case in a dwelling unit.

JP: Yep, but that's all I can find for a vertical duct chase. You do better?

**Jim Luttrall** · 01-25-2009, 03:34 PM

This is the best I could find so far.

**Jerry Peck** · 01-25-2009, 04:05 PM

Firestopping chase - in this case it is a plumbing pipe, but the same principle applies to chases with ducts in them.

These are from the IRC Commentary.