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Thread: TGI Cutting.

  1. #1
    Join Date
    Sep 2002
    Posts
    3,708
    Help!! Hey guys it been a while since I've done any new
    construction and I need to know what is allow when cutting
    thru tgi to run duct.

    If I recall from years ago was, stay two feet from the ends
    and at least 1 inch from top and bottom of the top and bottom plate.Also a foot apart from each cut if possible.

    Does this still hold true? TIA.

    Oh by the way,let me just say I dont miss this kind of work at all,at least with retrofit I have something blocking the wind.Dam its cold!!


  2. #2
    Join Date
    Oct 2004
    Posts
    1,722
    I went to the local lumber store and talked with a sales rep who gave me a pamphlet with the proper places to cut into a TJI. Each size TJI was different. The guide came from the makers of the them, so I followed it. I've lost it and need to get another one. I'm going to need it.
    Get back to work.

  3. #3
    Are you that desperate to go back to new construction or what?????......
    Hey cockroach, don't bug me!

    www.AskTheDiceman.com

    www.TheColdConspiracy.com

    www.Pennwood-HVAC.Com

    Bring Em Home....

  4. #4
    Join Date
    Nov 2004
    Posts
    125

  5. #5
    Join Date
    Sep 2002
    Posts
    3,708
    Originally posted by Diceman
    Are you that desperate to go back to new construction or what?????......
    I'm hungry!! Just kidding,it a nice infloor project..
    Only time I get to do one is when the owner of the home shop around the builder.

    Thanks for the info Tinfab!


  6. #6
    Join Date
    Nov 2004
    Location
    Seattle Area
    Posts
    96
    Simpleman,

    If it were me I would get written approval from the builder/engineer befor cutting anything that is structural, or better yet try to get the builder to cut it. I was on a job last year, a new 100k sq.ft. assisted living facility. The plumbers drilled thru a couple hundred TGI's according to the specs from the manufacturer. It turns out they missed the distance from the ends by 2", and a very dilligent inspector caught it. The length of the TGI has alot to do with how far from the ends you can cut and how much you can cut. The replacement of the TGI's was $70,000, and a delay of project fine of $60,000. OUCH.

  7. #7
    Join Date
    Sep 2002
    Posts
    3,708
    I hear you 1manband,I remember when they first started framing home with tgi in my area.
    I was doing roughin at that time,the boss told me all is cool you can cut anything as long as you stay 2ft away from the ends, and a foot apart for every supply outlet.

    Let me say at that time I was doing piece work,I buzz thru
    about 24 town home and each one had to be redone.

    I felt sorry for the boss,but my feeling wont hurt at all
    well maybe just alittle,but I felt better once I realize that I have more work.

    Thanks for the heads up.

  8. #8
    Join Date
    Jan 2001
    Location
    Pacific Coast of Canada
    Posts
    4,008
    In floor heating lines too close together cost us 1200 bucks. We get the contractor to sign the marked joists now....

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