Announcement

Collapse
No announcement yet.

T G I Beams

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • T G I Beams

    I am building a new house and have 9 inch by 16 foot span of TGI beam and need to know at what location in the beam can I drill a 6-inch hole for installing duct work?n

  • #2
    Re: T G I Beams

    You can drill one wherever the manufacturer says you can. You are following their instructions... right?
    Bailer Hill Construction, Inc. - Friday Harbor, WA
    Website - Facebook

    Comment


    • #3
      Re: T G I Beams

      I'll ask a better question.

      You are a building professional, right? That means you are a building contractor of some type, or an experienced tradesman, or an engineering or design professional with experience in residential construction. You are one or more of these, right?

      Because if the answer is no, you are not supposed to be here. This ain't no disco.

      But seriously, go here http://www.ilevel.com/literature/TJ-4500.pdf and look at the details on page 11.

      This documentation is from Trus Joist MacMillan's I-Level specifier's guide. The product name for their engineered I-joists is "TJI" and is copyrighted.

      A lot of folks hear the name, their hearing is shot from shooting pneumo-nailers and firing up saws while not wearing hearing protection, they think they are hearing "TGI," and they give that name to ANY I-joist, even if it's made by Boise or Jager.

      So beware, J Mysz, and pay attention to the brand. Whichever brand you use will have specs like those I have shown you here from I-Level, and those are the ones to which you must adhere.

      Comment


      • #4
        Re: T G I Beams

        Well, Dave, THERE is a fairly flippant answer. Isn't it?

        Where do you think you are? Over hanging with the homeys at the Taunton site?

        Comment


        • #5
          Re: T G I Beams

          Maybe you have it backwards. Here on cell block D we give some of the newcomers a special type of welcome.

          Hey, you know, we've been siding and trimming a house and using your board and batten trim detail. Second time now. It works extremely well. I recently looked at a possible remodel where they did B&B but just nailed the trim over the siding. Fugly.
          Bailer Hill Construction, Inc. - Friday Harbor, WA
          Website - Facebook

          Comment


          • #6
            Re: T G I Beams

            What is this detail you speak of? I have a house design that would look great with it.
            Your guy lost. Get over it.

            Comment


            • #7
              Re: T G I Beams

              Originally posted by J Mysz View Post
              I am building a new house and have 9 inch by 16 foot span of TGI beam and need to know at what location in the beam can I drill a 6-inch hole for installing duct work?n
              i dont think I would drill thru a beam at all if i could avoid it. as for the joists there should be a little book taped to the side of several joists, its called a pocket guide and it will tell you everything you need to know about building with TJIs.
              Jeff

              When all else fails read the instuctions

              Comment


              • #8
                Re: T G I Beams

                I don't think I would span 16' with a 9" joist, but maybe I only work for the four star discriminating homeowner on page 2
                http://www.bc.com/wood/ewp/documents...l_complete.pdf
                CJ

                Comment


                • #9
                  Re: T G I Beams

                  Good luck finding a 9" I-Joist. I've only heard of 9-1/2". Roseburg's RFPI-Joists allow spans of 16' with a 9-1/2" joist depending on width/series and how it's being used (simple span or multiple span), deflection limits (i.e. L/360 or L/480 or even higher) and the load being used (i.e. 40/10, 40/20, etc.).

                  I'm working on a design now for a 24' wide house using 9-1/2" joists at 24" O.C. and it calcs out just fine, with very little vibration or bounce. I'm sure the Advantech subfloor will help it some extra stiffness.
                  Your guy lost. Get over it.

                  Comment


                  • #10
                    Re: T G I Beams

                    Originally posted by Bill Lacey View Post
                    I'm working on a design now for a 24' wide house using 9-1/2" joists at 24" O.C. and it calcs out just fine, with very little vibration or bounce. I'm sure the Advantech subfloor will help it some extra stiffness.
                    With an intermediate girder?

                    Tom
                    1) Unconsciously Incompetent: He knows not, and knows not that he knows not. He is a fool. Shun him.
                    2) Consciously Incompetent: He knows not, and knows that he knows not. He is simple. Teach him.
                    3) Unconsciously Competent: He knows, and knows not that he knows. He is asleep. Wake him.
                    4) Consciously Competent: He knows, and knows that he knows. He is wise. Follow him.

                    May we all endeavor to progress from not knowing that we know not, to knowing that we know.

                    Comment


                    • #11
                      Re: T G I Beams

                      Same question here. I would think you'd need the 3-1/2 x 11-7/8 at a minimum to span 24' but I'm too lazy to get out my spec guide.
                      Bailer Hill Construction, Inc. - Friday Harbor, WA
                      Website - Facebook

                      Comment


                      • #12
                        Re: T G I Beams

                        Oh hell no, 24' free span. Those beams are way over rated.

                        I'm joking, of course I've got a center beam. I just forgot to include that in my previous post. W8x24 36' long with one or two posts, depending on how the point loads calc out.
                        Your guy lost. Get over it.

                        Comment


                        • #13
                          Re: T G I Beams

                          You better use at least one post under that steel beam. My guess is that a span of 20' is the max and that less will be better.
                          Bailer Hill Construction, Inc. - Friday Harbor, WA
                          Website - Facebook

                          Comment


                          • #14
                            Re: T G I Beams

                            I have to see how it all calcs out. I may even go with a heavier beam to get larger unobstructed areas in the basement. If I can get a heavier beam to work with one post, that's what I'll go with, but the lighter beam will get two posts.
                            Your guy lost. Get over it.

                            Comment


                            • #15
                              Re: T G I Beams

                              I used a W8x28. It is convenient in that (2) 2x8 exactly fill each side so you can nail on hangers. Mine spans 24 feet and is the center girder for a floor that's 24 feet wide. It's nice and stiff. The equivalent glulam would have been a LOT larger and actually more expensive.

                              Edit to add: with a W8 beam you can use 2x10 floor joists or 9-1/2 I joists and neither the floor sheating or ceiling drywall with be in contact with the steel.
                              Last edited by David Meiland; 01-06-2008, 11:17 PM.
                              Bailer Hill Construction, Inc. - Friday Harbor, WA
                              Website - Facebook

                              Comment

                              Working...
                              X