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    autowerx's Avatar
    autowerx Posts: 3, Reputation: 1
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    #1

    Apr 23, 2010, 07:21 PM
    How to find ibeam size for roof truss
    I am building a 40&60 metal building I need to build a 60 foot center truss . Iwant to use a 18 inch 35w ibeam but I am not sure if the size is right . The roof pitch is 12/2 with 6 inch insulation and 26 gauge are panels
    KBC's Avatar
    KBC Posts: 2,550, Reputation: 487
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    #2

    Apr 24, 2010, 03:49 AM
    Are you going to be lifting off this center beam? I question the size as it isn't really carrying all that much area, only 20' per side.

    Contacting a structural engineer would best suit your interest.perhaps a truss company with steel manufacturing,or maybe the steel mfgr themselves.
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    autowerx Posts: 3, Reputation: 1
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    #3

    Apr 24, 2010, 07:01 AM

    I am not going to be using it for lifting. A truss might not be the right name for it. It is only 1 ibeam running up from the eve to peak on each side like a regular steel buiding is constucted. Sorry for not being clear
    KBC's Avatar
    KBC Posts: 2,550, Reputation: 487
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    #4

    Apr 24, 2010, 07:23 AM
    So am I correct on the span of 20' per side or is the beam the other way,with 30' per side?
    autowerx's Avatar
    autowerx Posts: 3, Reputation: 1
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    #5

    Apr 24, 2010, 01:36 PM

    30 foot per side
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
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    #6

    Apr 25, 2010, 08:00 AM

    Steel roof trusses? Contact truss manufacturer. It's either that or consult an architect or engineer.
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