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Discussion forum for the various methods and structures used for getting an early start on your growing season, extending it for several weeks or even year 'round.

 
 
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Old March 26, 2015   #11
Cole_Robbie
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Join Date: Jun 2012
Location: Illinois, zone 6
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The fix was $30. The plastic was fine. It came out a little lumpy, but it just made it through this winter, holding about 6-8" of snow twice. That was really pushing it; there was a lot of sagging. The storm that collapsed it originally was about 8-10" of ice pellets. Ice is really heavy. My clearspan building made it through just fine, though.

I like the Gothic Arch, but it requires more plastic, and wind load becomes an issue. The high tunnel I am building now for my mom and stepdad is an a-frame. We are hoping it will shed snow. It's 16' at the peak, though. I am hoping it will stand up to wind. My high tunnel that collapsed is only 8' high at the peak. It is horrible about snow, but it will shed wind easily. I think it would take a tornado to blow it away.

The end walls of the high tunnel are five 4x4 posts set in concrete. One layer of 6-mil plastic pulled those posts inward several feet on each end, and yet the plastic was fine. The force required to pull those posts over was tremendous. It snapped several metal bolts. And yet the plastic never tore. I would have never guessed that would have happened.
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