Free Standing Shade Structure Without Anchors Ideas?

 
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Old 03-08-2018, 10:05 AM   #1
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Free Standing Shade Structure Without Anchors Ideas?


I've been approached by a restaurant looking for a free standing shade structure for their courtyard that cannot be anchored to the ground and has to be removable for winter. It's an area about 20'x36'.

Essentially they want a pergola/trellis type thing. They tried shade sails last year and it was a disaster. If I go forward with the project, I'll be consulting with engineers and designers, but I'm drawing a bit of a blank on what's possible. Maybe some deck structure that has a lot of ballast in it....

Have any of you done something like this or have any guidance? Couldn't find much in my short google search.
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Old 03-08-2018, 10:23 AM   #2
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Re: Free Standing Shade Structure Without Anchors Ideas?


If it falls on somebody you will be fd.

20 x 36 is not a small structure.

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Old 03-08-2018, 10:25 AM   #3
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Re: Free Standing Shade Structure Without Anchors Ideas?


You could build on pier blocks...but being that size I think it would rack pretty easily.
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Old 03-08-2018, 10:48 AM   #4
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Re: Free Standing Shade Structure Without Anchors Ideas?


It sounds like they should be considering offset patio umbrellas.
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Old 03-08-2018, 12:53 PM   #5
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Re: Free Standing Shade Structure Without Anchors Ideas?


Not being able to anchor it in some way makes things a lot tougher. Would it be okay to have an anchoring system that when the shade structure was removed would be hidden, something recessed into planters or along those lines?
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Old 03-08-2018, 03:47 PM   #6
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Re: Free Standing Shade Structure Without Anchors Ideas?


what they want is unrealistic plain and simple
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Old 03-08-2018, 04:00 PM   #7
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Re: Free Standing Shade Structure Without Anchors Ideas?


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Not being able to anchor it in some way makes things a lot tougher. Would it be okay to have an anchoring system that when the shade structure was removed would be hidden, something recessed into planters or along those lines?
Yeah why not some SS thread in sized concrete footings that you can bolt the structure down to. Cover them in the winter with something to avoid tripping.
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Old 03-08-2018, 04:29 PM   #8
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Re: Free Standing Shade Structure Without Anchors Ideas?


Let the engineer and architect work this one out. It's going to take a lot if ballast to keep on in place. Maybe jersey barriers on 2 sides.
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Old 03-08-2018, 04:30 PM   #9
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Re: Free Standing Shade Structure Without Anchors Ideas?


Why can't it be anchored? Sounds like you need an engineer.
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Old 03-08-2018, 04:43 PM   #10
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Re: Free Standing Shade Structure Without Anchors Ideas?


You should use a cantilever if you can. You can get it to self balance and if you make it lightweight you can easily take it down and leave the back side of the lever in place. Of course making it lightweight means it is going to need to be well secured so it doesn't sail away. Anything like wood framing, concrete, or stell is going to be a non-starter. Maybe something more like an awning...aluminum and cloth.

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Old 03-08-2018, 07:19 PM   #11
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Re: Free Standing Shade Structure Without Anchors Ideas?


You're going to have to have removable posts. If you can't have that I would not put anymore time into the job.

You could do removable posts and run cables between each post and string up some mesh or canvas. Simple and you can take it down in a few hours per season.

Another option is retractable awnings, They have them that require only 2 posts and can go up to 14' projection each way. Check out Kedurasol.com

But it is not practical to have no posts. Tell them to go rent a tent : )
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Old 03-08-2018, 07:51 PM   #12
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Re: Free Standing Shade Structure Without Anchors Ideas?


I had a customer buy these to use on occasion. I think they sense wind and close
http://www.sunsetter.com/oasis_awning
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Old 03-08-2018, 07:52 PM   #13
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Re: Free Standing Shade Structure Without Anchors Ideas?


A pergola with panels is nice but thats a wind problem
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Old 03-08-2018, 11:08 PM   #14
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Re: Free Standing Shade Structure Without Anchors Ideas?


Many thanks for the the responses. To answer a few questions:

Absolutely there will be an engineer involved if I pursue this, no question. The area in question is a shared parking lot that they take over in the summer to create some outdoor eating space, so they are not allowed to dig for footings/concrete or anything of the sort. They have some agreement with the landlord. They've used this outdoor space in the summer for over 8 years, but umbrellas seem to just get tore to shreds or stolen and they have a large warehouse to store the stuff for the winter.

I was thinking maybe a few smaller structures than one big one. Maybe something like a cantilevered pergola, with integrated flower bed that could hold water ballast in the bottom. Main structure of metal and some wood planks in a panels. I'd rather go to the engineer with at least an idea if I do decide to investigate this further.


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Old 03-08-2018, 11:26 PM   #15
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Re: Free Standing Shade Structure Without Anchors Ideas?


You need a designer and an engineer on this one, it seems.

Engineers can't design anything to look good and be compatible with the surroundings.

Andy.
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Old 03-08-2018, 11:31 PM   #16
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Re: Free Standing Shade Structure Without Anchors Ideas?


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You need a designer and an engineer on this one, it seems.

Engineers can't design anything to look good and be compatible with the surroundings.

Andy.
It would seem so.
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Old 03-08-2018, 11:40 PM   #17
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Re: Free Standing Shade Structure Without Anchors Ideas?


Quote:
Originally Posted by parkers5150 View Post
what they want is unrealistic plain and simple


And more than likely unsafe.


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Old 03-09-2018, 12:45 AM   #18
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Re: Free Standing Shade Structure Without Anchors Ideas?


Generally speaking I think the more concentric rather than eccentric (reviewing to the loads, not the client) the better off it's going to be, also obviously the more open the less wind loading but then of course the shade will be less also.

The water ballast idea isn't bad, sand might work also, just be sure and don't the cats find it!
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Old 03-09-2018, 04:08 AM   #19
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Re: Free Standing Shade Structure Without Anchors Ideas?


You can try these they hold about 40LB each, they got heavier weights also.
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Old 03-09-2018, 06:26 AM   #20
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Re: Free Standing Shade Structure Without Anchors Ideas?


I'd never get a decent night's sleep if a structure I built wasn't anchored down well enough to withstand gale force winds. apart from the liability I wouldn't want someone to get hurt. Umbrellas are how the rest of the world deals with a situation like that. If they are getting torn up something is wrong.

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