How much weight can my trusses carry?

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Old 01-21-14, 02:21 PM
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How much weight can my trusses carry?

Trusses for my barn will be here next week and I am trying to figure out how much weight I can store in the attic. Trusses are 4' OC, 24' span, and the plans say the weight rating is 30psf. I'm not sure how that converts to actual weight I can statically store.
 
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Old 01-21-14, 03:46 PM
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Really need to be asking the company that's supplying the trusses.
48" is double the normal spacing so I'm guessing your planning on metal roofing.
If you planed on storing items you should have ordered storage trusses and planed on a minimum of 24" spacing.
Storage trusses would have had a wider cord.
 
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Old 01-21-14, 03:46 PM
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Common conversion is "Christmas trees" and ornaments. Trusses are not beefy enough, especially in that length to carry more than their own weight and sheetrock. Be very careful unless it is substantially strengthened.

I have run double 11 1/4" LVL under the mid point of trusses in a barn with proper vertical support on the ends for a customer who wanted to store more than decorations up there.
 
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Old 01-21-14, 04:05 PM
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They are supposedly storage trusses and 48" centers are the norm around here for a barn. Bottom cord is 220 if that matters.
 
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