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Old 06-11-2014, 10:53 AM  
diynonstop
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Default Anchor a gazebo without drilling into concrete

We have a 10x12 canvas top gazebo with a steel frame. My husband refuses to drill into the newly pour concrete slab.
I was thinking we could anchor it down by using 35 pound concrete planters filled with play sand and river rock, and topping it with 3 inch think flagstone pieces. Maybe even put sand inside the bottom 1/3 of the hollow gazebo legs. This would probably bring the weigh to around 100 pounds per leg. Felt confident this would work. But … Last night it stormed and I heard the wind ripping across the house. Maybe 30 mph winds. I fear 100 pounds per leg wouldn’t be enough. Neighbor has the same one bolted down to concrete and it was fine. Cant make a mistake because if this thing breaks free it will end up in the pool tearing the new pool liner $$$$.
How much weight would be enough? Other ideas on how to weigh it down?


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Old 06-11-2014, 11:40 AM  
bud16415
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With a 30 MPH wind the wind force per sq foot would be about 2.3 pounds x 120 = 276 / 4 legs = 69 pounds per pot.


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Old 06-11-2014, 02:47 PM  
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Originally Posted by diynonstop View Post
. . .refuses to drill into the newly pour concrete slab.

if this thing breaks free it will end up in the pool tearing the new pool liner $$$$.
"The assumption is that the greater the number of ideas generated, the greater the chance of producing a radical and effective solution."

Run two galv. steel cables under the slab using a >12' pole/pipe from HD and strap the thing down. Then clean and return the pole.
If you use a pipe you can force water into it so it digs its own path. If you hammer it in you may need a comealong to extract it.

2nd option, anchor a cable with a strong spring to something else with the cable too short to allow the tearing. Bury the cable so it's not ugly.
This is what we do with beach umbrellas and a screw in dog anchor so nobody gets impaled by our umbrella.

BTW, your [SIZE=3] is killing me.

Last edited by Wuzzat?; 06-11-2014 at 03:12 PM.
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Old 06-11-2014, 03:35 PM  
kok328
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Fill a 5 gallon bucket with mixed concrete and set the leg of the structure in the concrete. Form it up to maintain plumb on the leg while it sets up. Repeat for the other 3 legs and decorate as desired. You can leave the pour in the bucket or break away the bucket to reveal the concrete base.
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Old 06-11-2014, 03:37 PM  
nealtw
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With a 30 MPH wind the wind force per sq foot would be about 2.3 pounds x 120 = 276 / 4 legs = 69 pounds per pot.
Bud; you also have to figure in lift as the wind will hit just right sooner or later.
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Old 06-11-2014, 04:26 PM  
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With a 30 MPH wind the wind force per sq foot would be about 2.3 pounds x 120 = 276 / 4 legs = 69 pounds per pot.
Bud, your reply astounded me. How did you come up with the wind force per square foot? Is there a formula?
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Old 06-11-2014, 04:35 PM  
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Bud, your reply astounded me. How did you come up with the wind force per square foot? Is there a formula?
It's the formula of the first rule of salesmanship...IF YOU CAN"T CONVINCE THEM, CONFUSE THEM...
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Old 06-11-2014, 04:49 PM  
bud16415
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On iPhone now but will give explanation later. Took into account up flow as used total area in calculation, worst case.

Correct if you can't dazzle with brilliance baffle with BS.


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Old 06-11-2014, 04:51 PM  
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http://www.wikihow.com/Calculate-Wind-Load
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Old 06-11-2014, 04:52 PM  
bud16415
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Wuz you are the dirty dog that filled my new water pipe with dirt that time. Glad I switched to PEX.


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