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Old 06-30-2017, 02:47 AM   #7
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Default Re: Unexpected response from 3M about VHB 4950 tape for rigid solar panels

Wind up lift forces for buildings - caused by vortexes rolling over the corners creating a low pressure over the flat surface - can be as high as 50 psf at the edges and around 20 psf in the middle of the roof area. These are usually just spot type loads - not uniformly applied over the entire roof area. But, mulitply 50 psf times just 1/4 of your panel area to get an idea of what kind of loading you might see on one footing. Up around 100 pounds!
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