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  1. #1
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    Default Will the Ceiling Collapse?

    I am in the process of dividing my pole barn into a work/play area. I have another thread here seeking information about insulating:
    Insulating My Pole Barn - need help - Page 2 (these are pics of the inside and the frame work I'm talking about in the text below)

    My pole barn is 30x60, so my area will be 30x30. As with most pole barns, the trusses are not typically made for bearing weight.

    I am making a ceiling using 2x4's (16"OC) between the trusses - it is 9ft between the joists (is that what the lower 2x6 of a truss is called?). I am then insulating with faced rolls and then plan on hanging drywall to the 2x4's.

    DO I NEED TO WORRY ABOUT THE TRUSSES/JOISTS NOT BEING ABLE TO SUPPORT THE WEIGHT OF THE CEILING?

    The trusses are framed and attached to either 2x6's or 2'x4's using those galvanzied steel connector plates. Will the weight of the 2x4's, insulation, and drywall cause a problem for my ceiling?

    Any help is greatly appreciated.

  2. #2
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    Default Re: Will the Ceiling Collapse?

    I think the trusses are engineered to handle 5/8" drywall and insulation (that's a minimum...the trusses just don't appreciate heavy loads from above like a loft or attic although you can get them if you plan ahead).

    The weight of your 2x4's is nothing. If you are really worried about it (I wouldn't be) they make a ceiling drywall in 1/2" now...actually easier to handle plus you will get to use your scraps anywhere else you have 1/2 rock.

  3. #3
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    Default Re: Will the Ceiling Collapse?

    I am no engineer, but it looks plenty stout to me. I have built my shop, added on a bedroom to my house, and built several storage sheds, and all are still standing. From what I see, I would not hesitate to insulate and rock it.

  4. #4
    Super Member /pine's Avatar
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    Default Re: Will the Ceiling Collapse?

    FWIW...the bottom member of a truss is a "bottom chord"

    If you asked the engineer that originally designed the trusses they would most likely tell you they were not designed to carry additional framing but I'm guessing it would be fine...use light-weight sheetrock (25% lighter than regular 1/2 boards...
    Slash Pine
    blunt and succinct yet sincere...in the immortal words of Popeye..."I yam what I yam"

  5. #5
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    Default Re: Will the Ceiling Collapse?

    Quote Originally Posted by /pine View Post
    FWIW...the bottom member of a truss is a "bottom chord"

    If you asked the engineer that originally designed the trusses they would most likely tell you they were not designed to carry additional framing but I'm guessing it would be fine...use light-weight sheetrock (25% lighter than regular 1/2 boards...
    not to argue with you but trusses are not designed on a project by project basis (they are mass produced) and I'm sure are way over-engineered to handle drop weight. All he is proposing to do is add a few 2x4 "nailers" which weigh nothing. as for the rock, ceilings used to use 5/8ths to eliminate "waves". The new trend is towards a special 1/2 ceiling board that is stiffer. I don't think it is much lighter than standard 1/2 board. And I'll add that code might still require 5/8" "typeX" for fire retardant although that might have changed now also. Simple Google search for US Gypsum should give you the details.

  6. #6
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    Default Re: Will the Ceiling Collapse?

    I was going to just go with 1/4" drywall because of it's weight, price, and the fact that I'm not trying to make this work/play area perfect. Really, it's just something to keep in the heat when we are out there in the winter and to use as a play area all year long.

    From the sounds of it, all of you feel pretty confident that hanging sheet rock on the 2x4's and the "bottom chord" of the truss won't pose a problem.

  7. #7
    Super Member /pine's Avatar
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    Default Re: Will the Ceiling Collapse?

    Quote Originally Posted by teejk View Post
    not to argue with you but trusses are not designed on a project by project basis (they are mass produced) and I'm sure are way over-engineered to handle drop weight. All he is proposing to do is add a few 2x4 "nailers" which weigh nothing. as for the rock, ceilings used to use 5/8ths to eliminate "waves". The new trend is towards a special 1/2 ceiling board that is stiffer. I don't think it is much lighter than standard 1/2 board. And I'll add that code might still require 5/8" "typeX" for fire retardant although that might have changed now also. Simple Google search for US Gypsum should give you the details.
    You are most likely correct about the truss design on standard pole barn size structures...but I guarantee anyone that sells said trusses has copies of the original engineer's signed seal....

    Unless a house or other custom building is a basic gable to gable run at a common width...almost all the trusses have to be designed and then approved (signed/sealed) on an individual basis...

    Unless the space located above the cited ceiling is "living space" or has additional structure that supports living space...there should be no fire rating requirements on said ceiling...
    Slash Pine
    blunt and succinct yet sincere...in the immortal words of Popeye..."I yam what I yam"

  8. #8
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    Default Re: Will the Ceiling Collapse?

    Quote Originally Posted by steveessie View Post
    I was going to just go with 1/4" drywall because of it's weight, price, and the fact that I'm not trying to make this work/play area perfect. Really, it's just something to keep in the heat when we are out there in the winter and to use as a play area all year long.

    From the sounds of it, all of you feel pretty confident that hanging sheet rock on the 2x4's and the "bottom chord" of the truss won't pose a problem.
    I would not recommend 1/4" or even 3/8" sheetrock...if you don't care about the looks why not some 1/2 " foam board....it actually comes 9' long by 4' wide and comes in T&G edges (or flush)...
    Slash Pine
    blunt and succinct yet sincere...in the immortal words of Popeye..."I yam what I yam"

  9. #9
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    Default Re: Will the Ceiling Collapse?

    Quote Originally Posted by /pine View Post
    I would not recommend 1/4" or even 3/8" sheetrock...if you don't care about the looks why not some 1/2 " foam board....it actually comes 9' long by 4' wide and comes in T&G edges (or flush)...
    Do you have any links to 1/2" foam board?

    If it is cheaper, easier to hang, and in those measurements (9'L x 4' W) then that is probably what I would go with.

  10. #10
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    Default Re: Will the Ceiling Collapse?

    I didn't see anything on how you will construct the dividing wall(s). One thing to be careful with is that you don't build anything solid under a truss. A farm publication I read some time back had examples of failed structures and they said one quick way to have the trusses fail is to add support where it wasn't originally designed to have it. They showed examples of failures and also details of how to make floating connections for supporting stuff inside the building.

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