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Old 05-09-2014, 09:23 AM   #15
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IMO, Terry provided the best answer. We have also use tie downs from time to time which help, but generally, at night or if we leave the trailer, we roll the awning back up, but leave it unsecured. It takes no time at all and I'd rather not take the risk that I guessed incorrectly.
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Old 05-09-2014, 10:07 AM   #16
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We had to replace an awning (not ZipDee) on an SOB trailer because we left it and a wind came up. We make sure to roll the awning up when we leave for anything other than a walk around the park.
After our recent experience with high winds and traveling and almost losing our awning, we are adding a second travel latch to the front part of our trailer. Paranoia can be a good thing.....


Kay
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Old 05-09-2014, 11:56 AM   #17
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Quote:
Originally Posted by Brent10 View Post
Can anyone tell me just how much wind (mph) is too much before taking down the awning? It seems a whole lot more sturdy than most but I don't want to take any chances...thanks

When it starts flapping, I start wrapping.

And for travel I installed hooks at the un hooked ends on both the patio and street side awnings....plus straps at the ends of the street side awning to augment the lone stock center one.

All this because I lost an awning during a thunderstorm many years ago.
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Old 05-09-2014, 12:05 PM   #18
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Wind force in ZipDee awnings

Structural engineers use an equation for the wind force on a building to be q = v^2/383.6 (force equals velocity in MPH squared divided by 383.6) per sqftt of area affected.

For a 25 mph wind that equates to 1.63 lbs per sqft

If your ZipDee was 8x20 or 160 square feet, would you let a 260 pound man hang on it?

If the wind gusted to 50 mph, then the multiplier jumps to 6.52 and now the "hanging man" would weighs over 1000 pounds.

Probably not a good idea to leave it deployed.

Perhaps more importantly, aluminum is not fond of fatigue and the load-cycling of the frame's fixtures would be like bending a metal tab to make it break.

Perhaps a good rule of thumb should be:
If you can hear it flap,
That's a wrap & roll it up.
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Old 05-09-2014, 03:32 PM   #19
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Yahoo! Another Engineer with us!
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Old 05-09-2014, 08:01 PM   #20
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We are taking over. We control the horizontal and the vertical. There is no escape.

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Old 05-10-2014, 09:39 AM   #21
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It only works if we understand you....

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Old 05-10-2014, 09:59 AM   #22
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What's not to understand?
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Old 05-10-2014, 11:23 AM   #23
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Talking Thanks

Thanks to everyone for the quick and valuable replies...I will continue to play it safe and conservative with the awning. This forums great and much appreciated!!!
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Old 05-10-2014, 02:46 PM   #24
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Its one of those experience things...
You'll learn where the wind threshold is, as with other things.

Pretty soon you'll be a battle hardened road warrior!
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Old 05-10-2014, 03:49 PM   #25
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I remember being told at a Zip Dee forum at the main awning is good up to 20mph winds and rear and road awnings are 30mph. I ALWAYS bring my awning in when leaving the campground or rally. If I'm with other ASer's that are staying at the rally site during the time I am going out, I ask if they will bring in my awning if the winds start to pickup. On numerous occasions I have closed up folks Zip Dee's and vintage awnings when the weather was acting up. When in doubt bring in the awning.
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Old 05-15-2014, 05:05 PM   #26
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Like all the season airstreams are saying never leave the awning out when leaving the trailer or at night. It better to put the awning away at 9:00pm not at 03:00am in a wind/rain storm. Sleep tight and open awning in the morning before coffee. Been there done that, it no fun trying to close the thing with wife yelling at you for not doing it before bedtime.
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Old 05-15-2014, 06:41 PM   #27
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After my first 3am out in my underwear, frantic awning rollup, in at 9 even if it looks nice....
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Old 05-16-2014, 07:27 AM   #28
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If the awning is almost parallel to the ground it will tend to flap but not act as much like a sail. If the awning is much lower on one end than the other, it will act like a sail and put more load on the mounts. For best wind resistance, extend the arms just about all the way. You might fold up an arm but at least it won't rip loose from the mounts.

Perry
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