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Old 04-03-2012, 02:45 PM   #1
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Truss weight limits


Does anyone know what the weight limits of a truss is? For example, I have a 30x50 pole barn and wondered if I could put some 2x6s between the trusses and lay some plywood between them for additional storage. Would this cause any structural problems?

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Old 04-03-2012, 03:20 PM   #2
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Truss weight limits


Those are manufactured trusses, not home built ones. You absolutely need to contact the manufacturer if you want reliable structural information on the load capacity of the trusses. When you talk to the manufacturer, they are going to want a written description with a scaled plan of exactly what you want to do, and the load in pounds per square foot you plan to have. They can then tell you if their trusses are rated for the load, and they should have recommendations on how to install the support framing to the trusses.

If you are unable to determine who the manufacturer is, your best bet would be to hire a licensed structural engineer to run the computations for you. As a matter of note, trusses are typically very sensitive to changes in loads, so DO NOT add load without having a thorough, careful analysis done first.

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Old 04-03-2012, 08:15 PM   #3
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Truss weight limits


EXActly! their designed to support the roof load and the weight of drywall.. nothing else
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Old 04-03-2012, 09:05 PM   #4
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Truss weight limits


Thanks for the info! Glad I came here before I did something stupid.
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Old 04-03-2012, 09:12 PM   #5
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Truss weight limits


If it was me, I would build a structure that would allow you to utilize storage up high, and still have space below. That would mean coming up with a plan and getting the wood. How much weight are you planning on storing? Maybe get some Pressure treated 6x6 posts to use as framing timbers, and use 2x10's for the floor framing, with 2x6's to keep the 6x6's from spreading at the bottom, but you will have to keep the front open. That would mean two on the left, two on the right, and same for the back sandwiching the 6x6's between them. I know that it is overkill, but it would last.
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