Bracing for a free-standing, pergola style patio roof structure.

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Old 05-28-15, 04:18 PM
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Bracing for a free-standing, pergola style patio roof structure.

On a 4-post, free-standing, pergola style patio cover roof, I am wondering if there is an alternative to using those big knee braces. The cover I am planning is a little lower than some, and I'd like to avoid the knee braces if possible for aesthetic and practical reasons.

I can go with heavier timbers, maybe 8x8 posts and 8x10 beams.

How about a pair of the Simpson HL Heavy Angles with Optional Gussets on each post - HL76PC:
HL Heavy Angles with Optional Gussets
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And a pair of Simpson HLPC/HTPC Beam to Column Ties on each post as well - 1616HTPC?
HLPC/HTPC Beam to Column Ties
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Old 05-29-15, 08:03 PM
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Corner braces are required to prevent (or at least minimize) sway of the roof structure. I'm not sure I'd gamble on those flimsy corner angles to do that as well as timber braces can. Your structure will be prone to creaking and groaning when the spring NM winds kick up. Also, a disadvantage of using steel angles at the corners is the large number of holes you'll be drilling in the main members, required to fasten the angles.
 
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Old 05-29-15, 10:44 PM
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Yeah, I was kind of thinking you might say that, but I had to ask anyway. It's probably why I couldn't find any pictures of structures done like that.

So, I'm looking at other design options ...
 
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