Just got a 10' x12' x 10' height polycarbonate greenhouse with aluminum
structure kid for the wife:
The instruction is to excavate the area to a depth of 5" and bury the
greenhouse base frame in it with gravel. No other anchoring method is
provided. Even though I'm located in the San Francisco Bay Area with not
that much wind but I'm concern about wind loading after installation. Has
anyone installed one of this?
The Greenhouse Forum on Gardenweb (
http://forums2.gardenweb.com/forums/strucs/ ) has a lot of information on
installing and reinforcing that greenhouse. If you read the FAQ for the
forum and do a search for HFGH you will find plenty of information.
I have a 200 square foot greenhouse which is anchored using in ground,
auger-like thingies. They were sold as an accessory with the
greenhouse. I didn't visit the URL you provided, but we have strong,
straight line winds here in S. Central TX and those winds can last
many hours, sometimes days. So far, the greenhouse hasn't flown away.
If you are concerned about high winds you can actually have someone
come in and pour a foundation with the frame in it. I still say you
should take a look for accessories to hold it down.
I suggest you contact the manufacturer and tell them your concerns and
find out for sure what would be the best way. Concrete very well may
eat away the aluminum. Give them an email to be sure, or a phone
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