Pergola Idea - Need Advice

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acolic

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Hi,

the sun beats down on my backyard so I have been toying around the idea of building a pergola.

That wouldn't normally be a problem but with my current home my kitchen pushes out into the backyard so the walls are not straight. Have a look at the attached file.

My issue is what to do with posts A, B and C. It seems that where the joist beams link up with post B there's a compound angle that I need to take into account.

It's the area between joist A>C that's causing me some angst.

Any comments on the plan?

Thanks
 

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acolic

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I should have mentioned I have an option 2 for my design just rotating the first design 180 degrees.

Appreciate the feedback.
 

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Snoonyb

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The option you select, to afford you shading, also depends upon the joisting as well as the lattice above and B offers more than A.
 

acolic

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I'm thinking that Option 2 will block more sun then option 1.

Any idea how the joists should be attached to posts A in Option 2?
 

Snoonyb

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Rotate post A & B to follow the plane of the building and use lag bolts, or instead of the 2 ledgers, use a single 4X6 header and architectural metals.
 

acolic

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Hi,

ok I made a mistake and both post A and post B in the diagram should be parallel to the building.

How would the joists starting from post C tie into Post B considering that Post C and post B are not aligned along the same plane?
 

Snoonyb

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Hi,

ok I made a mistake and both post A and post B in the diagram should be parallel to the building.

How would the joists starting from post C tie into Post B considering that Post C and post B are not aligned along the same plane?
Actually, I made the mistake with reference to post A.

Post B rotates and moves closer to Post A

The outside ledger from Post C to Post A is nailed.

The outside ledger from Post A to Post B is nailed.

The inside ledger from Post A to Post B is nailed

The inside ledger from post C to Post A is lagged to Post A.
 

nealtw

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Make the 45* bend with angled joist hangers after attaching the first set straight.
Hangers come right and left buy 2 of each and return the ones you don't need.
 

acolic

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Are there some standard guidelines for the height of a pergola?

Thanks
 

Snoonyb

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Generally, near the height of the dwellings fascia, however, the asmyth angle of the sun will tell you the amount of shading throughout the different seasons.
 

acolic

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Well I have a two floor home so the facia is pretty high up.

Would 9 feet be more standard?
 

Snoonyb

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Well I have a two floor home so the facia is pretty high up.

Would 9 feet be more standard?
I would think that 9' would be to high.

Your adjacent glazing is 6'8" above the finished floor, so I would think that in the neighborhood of 8' to the top of the lattice, above the finished floor or 1'-6" above the top of the glazing, measured at the exterior, would be architecturally/aesthetically comfortable.
 

acolic

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Appreciate the feedback.

How would you handle the following problem.

If you look at one of my drawings I step out of my home through set of patio doors and then take two steps down to get to the ground. The patio door is about 2 feet above the ground.

If I build a pergola with a height of 7‘ then I would walk out of the patio door and the pergola would be in the way.

So then I need to build the pergola to clear the patio door perhaps at 9‘ but then it’s too high in general.

Making sense?
 

Snoonyb

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The aesthetics are your domain.

Were it I, and following the 2nd option, post A and it's opposing post are in line, I would step the area encompassed by post A & C down.
 

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