Bill Bolle wrote in message ...
Before you start building with PVC take a look at this hoophouse:

http://www2.moment.net/~wingnut/hoophouse.htm

Bill

I am settled on the cattle panel hoophouse (a PVC one has too many
techincal problems which I won't mention here, though I will use PVC
pipes at the edges for the clamping of poly). One last question: the
hoophouses( two of them, each
38X12, side by side), should be oriented N-S or E-W? Light hitting the
poly
at an angle below 40 degrees is totally reflected.