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Pergola atop existing deck #4646290
01/25/18 08:06 PM
01/25/18 08:06 PM
Joined: Jul 2014
Posts: 389
Ceciltucky Maryland
Oldtom Online content OP
Oldtom  Online Content OP

Joined: Jul 2014
Posts: 389
Ceciltucky Maryland
Good evening - I want to build a 10 by 12 pergola atop an existing deck on the sun baked side of my home. I envision a 10 by 12 foot frame of 2 by 6 pressure treated, supported on 4 six by six posts. The pergola would be covered with some sort of sun block fabric during the spring and summer, with the fabric removed in the winter because I am in a windy location. Everything will be thru bolted or lagged heavily to keep the whole thing from lifting off in a wind gust.

Does this design sound sturdy enough for a windy area? Has anyone built one of these? Thanks in advance for any advice.

Re: Pergola atop existing deck [Re: Oldtom] #4646303
01/25/18 08:18 PM
01/25/18 08:18 PM
Joined: Mar 2017
Posts: 8,314
PimTac Offline
PimTac  Offline

Joined: Mar 2017
Posts: 8,314
It will all start from the bottom. Developing a separate foundation for the pergola that would be anchored in poured concrete footings would be my first thought. Using steel connections with bolts from the uprights to the roof framing should be plenty.

I’m think this way because if a strong wind is straining your pergola it would also strain the deck it sits on. That’s why I would focus on the foundation.

Cannot see signatures any longer so it doesn’t matter.
Re: Pergola atop existing deck [Re: Oldtom] #4646366
01/25/18 09:40 PM
01/25/18 09:40 PM
Joined: Sep 2004
Posts: 8,014
Marshfield , MA
andyd Offline
andyd  Offline

Joined: Sep 2004
Posts: 8,014
Marshfield , MA
What ever you do, DO NOT lag anything directly to the rim joists or sill of the house I'd make it free standing. Just lagged to the deck. All it needs is to support itself. Not load bearing Wind brace the corner posts. The bare joists will still catch wind.

'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
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Re: Pergola atop existing deck [Re: Oldtom] #4646746
01/26/18 10:00 AM
01/26/18 10:00 AM
Joined: Aug 2003
Posts: 13,442
Rand Offline
Rand  Offline

Joined: Aug 2003
Posts: 13,442
My first thought is how deteriorated is the deck?

20 years of sun? 5 years old and good maintenance?

2019 Jeep Cherokee Trailhawk 2.0T
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