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Thread: Core Drill Labor Units

  1. #1
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    Core Drill Labor Units

    So NECA labor units have different labor units per 1/2" increments. Is there really a time difference between a 1" or 1-1/2 core...same for 2 to 2 1/2" I labor 1 and 1-1/2" the same and 2 to 2 1/2" so on and so on.

  2. #2
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    Other than the actual drill time, the labor does not change for coring holes. The set up time and clean up time remains the same. On my industrial jobs, it would probably be 2 guys for 4 hours and I will use that no matter what size the core is.
    Don, Illinois
    Ego is the anesthesia that deadens the pain of stupidity. Dr. Rick Rigsby

  3. #3
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    Quote Originally Posted by don_resqcapt19 View Post
    Other than the actual drill time, the labor does not change for coring holes. The set up time and clean up time remains the same. On my industrial jobs, it would probably be 2 guys for 4 hours and I will use that no matter what size the core is.
    Thanks. So you are saying there is more drill time for a 2" compared to a 1-1/2"?

  4. #4
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    The larger the hole the more time it will take to drill it, add rebar add time. Not sure how much to add but concrete cutting companies charge more for larger holes, I forget how much

  5. #5
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    Quote Originally Posted by mstrlucky74 View Post
    Thanks. So you are saying there is more drill time for a 2" compared to a 1-1/2"?
    Yes there is a bit more drill time as you increase bit size. Probably not enough to worry about.
    Don, Illinois
    Ego is the anesthesia that deadens the pain of stupidity. Dr. Rick Rigsby

  6. #6
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    Quote Originally Posted by don_resqcapt19 View Post
    Yes there is a bit more drill time as you increase bit size. Probably not enough to worry about.
    And the larger the hole the more likely you are to hit a rebar (or two.)

    Sent from my XT1585 using Tapatalk

  7. #7
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    Quote Originally Posted by GoldDigger View Post
    And the larger the hole the more likely you are to hit a rebar (or two.)

    Sent from my XT1585 using Tapatalk
    And if it is right on the edge of a large hole where you have a lot of the cutting bit in the rebar, that really does slow you down.
    Don, Illinois
    Ego is the anesthesia that deadens the pain of stupidity. Dr. Rick Rigsby

  8. #8
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    I thought they xray slabs prior to coring to check for rebar or embedded conduits.

  9. #9
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    Quote Originally Posted by mstrlucky74 View Post
    I thought they xray slabs prior to coring to check for rebar or embedded conduits.
    Only when required.


    I know what I don't know, and I know where to go to find it!

  10. #10
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    Quote Originally Posted by mstrlucky74 View Post
    I thought they xray slabs prior to coring to check for rebar or embedded conduits.
    Critical for pre- or -post-tensioned concrete slabs because damaging a tendon is a serious (expensive) structural problem. And potentially a serious safety hazard as the ends explode out of their holes.

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