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Thread: Can I put everything in one trench in slab?

  1. #1
    DIY Senior Member guy48065's Avatar
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    Default Can I put everything in one trench in slab?

    My cottage remodel involves turning a room-on-slab into a mud room/laundry. For this to work I will need to bust out a trench across the slab over to the crawlspace where the bathroom is. Can I place hot/cold supply, washer/sink drain and electrical all in this same trench?
    Romeo and Atlanta, MI

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    Jack of all trades DonL's Avatar
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    Yes you can, but you need to have the proper distance separation for your Local Code requirements.

    The wire will need to be rated for that use


    It should be under the slab and not in it, in my neck of the woods.
    Last edited by DonL; 09-27-2013 at 10:27 AM.
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    DIY Senior Member guy48065's Avatar
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    Separation is a deal-breaker if they can't lay next to each other. Who would I ask--the building dept, electrical, or plumbing? Might I run into conflicting codes like I recently did with receptacle spacing over baseboard radiators?
    Romeo and Atlanta, MI

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    Jack of all trades DonL's Avatar
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    Where ever you get your permit would be the place to ask.

    You can look up the proper spacing and depth on the internet.

    It depends on where you live.

    Many places are happy to get your permit money and really do not care.


    Oops, Yes I did say that.
    Theory only works perfect in a vacuum.

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    DIY Senior Member guy48065's Avatar
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    Permits eh?
    I've been trying for weeks just to get the zoning guy to return my call. Small community.
    Keep it simple I say.
    Romeo and Atlanta, MI

  6. #6
    Jack of all trades DonL's Avatar
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    Quote Originally Posted by guy48065 View Post
    Permits eh?
    I've been trying for weeks just to get the zoning guy to return my call. Small community.
    Keep it simple I say.

    It looks like 12" separation is used in most areas.

    And the water line should be 12" below the frost line.

    http://www.hcnv.us/bldg_dpt/document...ements5-08.pdf

    You should put warning tape in the trench also.


    Good Luck.
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