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i just did some rough numbers.
30 foot span. simply supported at the ends. a 250 lb man can do a chin up in the middle and deflect a 4x12 beam 0.48 inch. i think the code allows 1/360 deflection. (?)
i dont know how deep this thing will be so i couldnt add the weight of the pergola slats.
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poof! gone
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