Sleeving through a foundation

[LarryFine]

You could ask that a cinder lock be embedded in the right orientation. That would give you two or three holes.

Sample pics I found, although these look cut, not formed:

 

[Terminator5047]

order some 6”pvc cut a piece the size of the space between concrete forms duct tape the ends and wedge it in. Once the forms are poured. Knock the tape off and run your conduit through the 6” pvc. One pieces of pvc can get you like 10 selves easy worth every penny

 

[Sea Nile]

Remembering and finding are two different things for me, but I seem to remember that service entrance conductors can't be run under a building. This may be a POCO rule which is why I dont' see it in 230. For your service lateral it would be wise to check with them on this

Came across this today in my studying and it reminded me of what you posted about remembering something but not remembering where you saw it. Table 300.5 pn page 70-143 NEC 2020. Minimum cover requirements for <1000 volts under a building. There is no minumum cover requirements when going under a building.

 

[MNSparky]

order some 6”pvc cut a piece the size of the space between concrete forms duct tape the ends and wedge it in. Once the forms are poured. Knock the tape off and run your conduit through the 6” pvc. One pieces of pvc can get you like 10 selves easy worth every penny

Yup, that's what I was kind of planning on. The kicker is the conduit is already there and I don't want to remove it so I'll need to work with the concrete contractor doing the footings on working around the conduit that will be passing through their forms.

 

[Sea Nile]

Could you use Article 372 (Cellular Concrete Floor Raceways)?
As an approved method to run a raceway under a concrete slab.

Or maybe a really beefed up Underfloor raceway (Article 390)

 

[MNSparky]

I've been approved to sleeve the existing conduits through the new foundation. However, the architect wrote up the change calling for me to disconnect, pull back and reinstall it through the sleeves with Quazite boxes where I make junctions. This seems like a whole lot of unnecessary work to me, is there a reason why I can't expose the conduits where the new foundations cross them, put sleeves around them and leave them in place? Is there anything I'm not seeing or thinking of? Seems like the same amount of work for the concrete contractor so I don't think they'd mind... I'm wondering if this is another case of someone who's never worked in the field (Architect) trying to tell those of us who have how to do it. How would you bid it, per the architect's instructions or per my plan?

 

[Fred B]

I've been approved to sleeve the existing conduits through the new foundation. However, the architect wrote up the change calling for me to disconnect, pull back and reinstall it through the sleeves with Quazite boxes where I make junctions. This seems like a whole lot of unnecessary work to me, is there a reason why I can't expose the conduits where the new foundations cross them, put sleeves around them and leave them in place? Is there anything I'm not seeing or thinking of? Seems like the same amount of work for the concrete contractor so I don't think they'd mind... I'm wondering if this is another case of someone who's never worked in the field (Architect) trying to tell those of us who have how to do it. How would you bid it, per the architect's instructions or per my plan?

If the architect is not suggesting a code violation bid to what the architect is asking for. "A lot of unnecessary work" just means more money to me. The kicker is if you are "bidding" the job and the architect is suggesting "unnecessary work", are all bids using the same criteria for scope of work? I have seen where one of these guys put forward a design that is beyond necessary that they have a friend who wants to bid and will allow the lessor work afterwards. If you have good communication with either the owner or the architect make a code compliant suggestion and see if it flies.

 

[MNSparky]

If the architect is not suggesting a code violation bid to what the architect is asking for. "A lot of unnecessary work" just means more money to me. The kicker is if you are "bidding" the job and the architect is suggesting "unnecessary work", are all bids using the same criteria for scope of work? I have seen where one of these guys put forward a design that is beyond necessary that they have a friend who wants to bid and will allow the lessor work afterwards. If you have good communication with either the owner or the architect make a code compliant suggestion and see if it flies.

That's what I'm fearful of here, getting underbid by someone who plans to leave the conduit in place. I really want these jobs but don't really want to gamble. The architect clearly stated the disconnecting with Quazite boxes on the revised plans so I guess that's what I'll bid for to be safe. If I win the work and can leave them in place, more money in my pocket.