Need ideas on getting these lights on block wall

[brantmacga]

Job calls for score fixtures on every block pilaster.

The issue I’m having is how to get conduit through the corners; take a look at these pics of the job & drawing and you’ll see what I mean.

The blocks are poured, and no MC cable allowed.

ANY ideas on how to do this and keep conduit or FMC concealed?

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[FionaZuppa]

are there any building plans that show where the electrical is suppose to run?
concealment? sure, have them put new hollow block next to the solid columns.
the plan shown looks like you can just hang conduit between fixtures ??

maybe you need to bore straight into the interior ? 3/4" masonry bit on a hammer drill, and then will need to use an extension, then shove in there some 1/2" conduit? the inside looks to be all surface mount conduit. the corners look tough, you'll need to drill in and then create a 45 to the inside, so perhaps 1/2" flex will be needed? do those columns have any steel in them?

 

[brantmacga]

are there any building plans that show where the electrical is suppose to run?
concealment? sure, have them put new hollow block next to the solid columns.
the plan shown looks like to can just hang conduit between fixtures ??

maybe you need to bore straight into the interior ?

No other drawings. I’ll bore all those along the wall, but it’s the corners I need another set of eyes on. The pilaster is just an extension of the wall.

You may be right though on replacing the block. I just don’t see any good options.


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[mopowr steve]

How about using 1/2" liquidtight borred through block pillars to the inside where with a hole punched into a core at same elevation could give access to the liquidtight then fasten to the rear of a junction box that will cover said hole?

pretty much as Fionna said

 

[FionaZuppa]

thats what i'm saying, in the corner items drill in until you meet the other wall (inside edge) that is at 90 degree, then from the inside you have to drill in at 45 degree to meet up with the other hole. you may need 1" hole though to get flex to push in and bend around the 45 in the bore.

 

[brantmacga]

Need ideas on getting these lights on block wall

Maybe go in with liquid tight and put a 90 on the end, then bring that into the back of a 4sq box. Probably the best option.


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[FionaZuppa]

Maybe go in with liquid tight and put a 90 on the end, then bring that into the back of a 4sq box. Probably the best option.


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so you'll chip out the inside to accommodate a 4sq? does this method pose an issue if the lights are at the same exact height, meaning the conduit comes in at the same height too?

 

[MAC702]

Is there already a fixed price to get the fixtures in location, or are they paying for whatever method you use? Who's approving the method? I see lots of external stuff already, at least on two walls, so external conduit might be acceptable if it's the easiest way to do it, possibly with underground between vertical conduit.

Punching into the interior will still be to visible conduit anyway, right? Will this always happen in a room where this is acceptable?

 

[infinity]

Maybe go in with liquid tight and put a 90 on the end, then bring that into the back of a 4sq box. Probably the best option.

A 90° fitting on a raceway cannot be concealed. Why no MC cable? That would make it much easier.

 

[mopowr steve]

What are they goin to do with the downspout?

 

[Cow]

Over here, we'd wet core a hole from each fixture location from outside to inside, probably 1.5-2" size. Just enough room to install pvc flex or ST fittings from the fixture into the back of a 4 sq on the inside of the building.

Other than that method, I have no other clean ideas for concealing the wiring in a poured block building. They're going to have to see conduit somewhere.

 

[FionaZuppa]

A 90° fitting on a raceway cannot be concealed. Why no MC cable? That would make it much easier.

inside has exposed conduit from the pics shown. i think concealed is just for the outside.

 

[steve66]

What are they goin to do with the downspout?

Offset it out over the light so the downspout is backlit?

 

[brantmacga]

Need ideas on getting these lights on block wall

The downspouts come down. We cut them off just above the pancake boxes that were set for the sconces.

We got it in there today; I’ll come back with a pic later.

It took some work, but were able to angle the drill enough to come inside out the face of each wall, and bored out the hole on each end for a connector to fit. I set a 8”x8” box in the corner; one whip lands in the side, and one in the back, and then piped in the box. It looks good.

Also, the pilasters were poured solid but the block wall turned out to be hollow.

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