Pergola support beam?


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Old 11-20-08, 09:33 PM
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Pergola support beam?

I'm building a Pergola onto my house, it is 26ft wide, 9ft from the facia to the rafter ends, there 24 - 2"x8" rafters spaced @ 13.75" oc. The question is if I construct the support beam out of 2 - 2"x8"x26' LVLs with a 2" space and supported on each end by knotched 6x6 posts will I have any sagging of the support beam? The back end of the rafters are attached to a 2x8 facia board attached to the house.
 
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Old 11-21-08, 04:31 AM
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I think the 2x8 is a little small. I would use 2x12 and feel pretty confident about it. You could try the 2x8, since it is only a decorative feature, and if you get sagging add a post in the center. I'm pretty sure you would get sagging over time.
 
 

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