mstrlucky74
Senior Member
- Location
- NJ
CMU Wall Penetration
- Thread starter mstrlucky74
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midamericairon
Member
Doesn't look like it specifies either way, just that both sides need to be firestopped. If you can coordinate with the brickes to leave a slot/opening for you to run your conduit through and then you firestop that would be the best option.
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Sent from my iPhone using Tapatalk
- Location
- Illinois
- Occupation
- retired electrician
Typically, if you conduits are not in place before the wall is built, you will have to provide your own holes. Also note that the specs may not permit your electricians to do the required fire stopping, sometimes the specs will require the EC to hire a specialty contractor to do that work.
mgookin
Senior Member
- Location
- Fort Myers, FL
- Occupation
- Retired inspector, plans examiner & building official
We can help you better if you give us the firestopping detail.
Iron sleeves for example are best placed by the masons. As long as you don't need it extending beyond the face of the block, cut them some 7-5/8" long chunks of pipe (or have the firestopping contractor/ GC's workforce) do it. They can mud it in real nice and pretty.
PVC usually needs collars. Check out some images: https://www.google.com/search?q=fir...ved=0ahUKEwitgab1zqrOAhVBlR4KHQaDBWQQ_AUIBygC
Does your company have sparky's on the scaffolding with them installing emt & boxes?
Is your company doing the firestopping on your own penetrations? (and are you allowed to?).
Iron sleeves for example are best placed by the masons. As long as you don't need it extending beyond the face of the block, cut them some 7-5/8" long chunks of pipe (or have the firestopping contractor/ GC's workforce) do it. They can mud it in real nice and pretty.
PVC usually needs collars. Check out some images: https://www.google.com/search?q=fir...ved=0ahUKEwitgab1zqrOAhVBlR4KHQaDBWQQ_AUIBygC
Does your company have sparky's on the scaffolding with them installing emt & boxes?
Is your company doing the firestopping on your own penetrations? (and are you allowed to?).
IME, electricians and brickies cooperate while wall is being assembled is the preferred method. Vertical conduit installed in "lifts", which is the height the brickies are willing to lift a CMU up, over, and down around a conduit. Electrician(s) has to be prepared as much in advance of setting CMU's as possible. Conduit already bent and cut to length, CMU's notched for horizontal conduit runs, boxes, offsets, etc.
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