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  • From: "Beth Spaugh" <lists AT rhomestead.com>
  • To: "'Market Farming'" <market-farming AT lists.ibiblio.org>
  • Subject: Re: [Market-farming] For those who have built tunnels using Johnny'shoops bender
  • Date: Sat, 18 Feb 2012 16:40:16 -0500

Etienne, check with Johnnys about your multiple purlins. I was at a
presentation by them and they had tunnel failure with multiple purlins, not
with one center purlin. The rain/snow sagged the plastic enough that it
collected above the side purlins, causing collapse.

Beth Spaugh
Rehoboth Homestead, Peru NY
http://rhomestead.com http://www.facebook.com/rhomestead


"How we eat determines, to a considerable extent, how the world is used." -
Wendell Berry

"Without power over our food, any notion of democracy is empty." - Frances
Moore Lappe



-----Original Message-----
From: market-farming-bounces AT lists.ibiblio.org
[mailto:market-farming-bounces AT lists.ibiblio.org] On Behalf Of Etienne Goyer
Sent: Saturday, February 18, 2012 12:38 PM
To: market Farming
Subject: [Market-farming] For those who have built tunnels using
Johnny'shoops bender

Hello everyone,

I bought Johnny's "Quick Hoops" high tunnel bender. Their instruction
manual is really good, and I like their design. I am planning on
building two 100' tunnels this spring. I have two questions for those
who have built similar tunnels.

First, Johnny's tunnel are 7' high in the middle, which I find is a
little low for trellised crop. I would prefer something closer to 10'
high. I am thinking that, instead of cutting the 6' post in half, I
would use the full 6' length of the post, leaving 4' sticking out of the
ground (instead of 1'). I This would make a kind of straight "side
wall" 4' high, on which the bows would rest. This would obviously cost
twice as much in post, but I think it is a fair trade off. Have someone
done something similar, and if yes, is the structure sound?

Secondly, how wide have you set the bows? The example in the manual as
a bow every 4'. I am planning on using three purlins (one in the
center, and two to attach the trellises to), so I am thinking the
structure will be quite solid indeed. I am thinking of having one every
6' instead. Would that be enough? My only worry is water accumulating
on the plastic above the purlins.

Beside, what was your experience? Any tips to share?

Thanks!

--
Etienne Goyer - Le Jardin du Village
http://lejardinduvillage.wordpress.com

"Changer le monde, une betterave à la fois"

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