Supporting cable

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Alwayslearningelec

Senior Member
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NJ
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Estimator
doing this small renovation job where they demo walls and ceilings and putting up new walls and hung gyp ceilings . There’s some existing mc cables in ceiling that we are connecting to and some new that we’re running. My foreman decided to use installed anchors and rods into the slab to support the existing cables that were hanging and also some of the new. Well the GC os saying these were not submitted and approved but I was not aware he was doing this. I figured we’d supporting of the black iron rod that goes to the slab as we usually do with caddy KX type of clip. He said that the ceilings weren’t up yet so he couldn’t do that but normally would. This is where my lack of “install” experience comes in and knowing sequence. Is there anything he could’ve done to hold off driving all these anchors and rods to support the mc cable( this is small 12/2 stuff) until the ceiling went up? So there are two aspects to this …. First supporting the existing MC cable that’s up there and then supporting the new that he’s installing . Can you wait til the ceiling framing/ rods etc. go up before you run your mc cable so then you have something to support to?
 
What kind of ceiling? Sheetrock or suspended? If it's suspended, I thought you had to independently support lights, wires, etc.; you can't use the grid for suspension...
 
Alwayslearningelec said:
doing this small renovation job where they demo walls and ceilings and putting up new walls and hung gyp ceilings . There’s some existing mc cables in ceiling that we are connecting to and some new that we’re running. My foreman decided to use installed anchors and rods into the slab to support the existing cables that were hanging and also some of the new. Well the GC os saying these were not submitted and approved but I was not aware he was doing this. I figured we’d supporting of the black iron rod that goes to the slab as we usually do with caddy KX type of clip. He said that the ceilings weren’t up yet so he couldn’t do that but normally would. This is where my lack of “install” experience comes in and knowing sequence. Is there anything he could’ve done to hold off driving all these anchors and rods to support the mc cable( this is small 12/2 stuff) until the ceiling went up? So there are two aspects to this …. First supporting the existing MC cable that’s up there and then supporting the new that he’s installing . Can you wait til the ceiling framing/ rods etc. go up before you run your mc cable so then you have something to support to?
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Yes you can wait until the ceiling goes up, but as rambo asked, there is nothing wrong with doing it the way your foreman wanted. the dollar cost shouldn't make or break the job and prevents you from having to go back and redo them. The labor is less, than shooting independent ceiling wires and tying them to the grid.
 
Well we never figure shooting anchors into the ceiling, dropping rod with an mc cable support for 12/2. 12/3 etc. mc cables.

Much more labor intensive than a KX clip off ceiling rod.
 
Alwayslearningelec said:
Well we never figure shooting anchors into the ceiling, dropping rod with an mc cable support for 12/2. 12/3 etc. mc cables.

Much more labor intensive than a KX clip off ceiling rod.
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That may be true but waiting for the pencil rod and iron just means that you'll potentially be way behind on the job and might have to work overtime to catch up. In the end it didn't save you any money by waiting and using KX clips.
 
Alwayslearningelec said:
Well we never figure shooting anchors into the ceiling, dropping rod with an mc cable support for 12/2. 12/3 etc. mc cables.

Much more labor intensive than a KX clip off ceiling rod.
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You have to shoot anchors, identify the independent ceiling wire as yours, tie it up to the grid. And all of this after the ceiling grid is in place. I dispute that it is MUCH more labor intensive. It is somewhat more labor intensive, but then again, when you need to add another piece of MC or conduit and must untie the wire and then tie it back up because it was pulling the ceiling up, you just made up for it. And as infinity said, you had to wait until the ceiling was done.
 
Strathead said:
You have to shoot anchors, identify the independent ceiling wire as yours, tie it up to the grid. And all of this after the ceiling grid is in place. I dispute that it is MUCH more labor intensive. It is somewhat more labor intensive, but then again, when you need to add another piece of MC or conduit and must untie the wire and then tie it back up because it was pulling the ceiling up, you just made up for it. And as infinity said, you had to wait until the ceiling was done.
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His system is slightly different, there are no ceiling wires he's using threaded rod.
 
infinity said:
So you have two choices wait until the job is 3/4 complete and then run all of your cabling on the pencil rod or make your own supports for the MC cable. The thing that the foreman did is pretty cheap (low amount of labor) in my book especially if you're shotting the anchor into the deck.
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How do you guys do it most of the time for a completely gutted space?
 
Alwayslearningelec said:
How do you guys do it most of the time for a completely gutted space?
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If it's poured concrete we shoot bridle rings. For steel beams we use bridle rings with beam clamps. We typically have all of our homeruns and branch circuit cables up before the pencil rod and iron is even on the job.
 
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