I would use at least 1" schedule 40 pipe, it does
not cost that much more.

I have always thought that the best way to build a small
INEXPENSIVE greenhouse would be to buy the 1 3/8"
chain link fence top rails & have them BENT into the
proper radius to make a semi-circle. At ~ $5 each for
a 10.5' section, it would be very cheap - and would last.

If anyone knows of a place in the Austin area that will bend
these rails, please advise. Once the shop is set-up, it should not
take but a few minutes to bend all sections to the same radius -
or whatever design you want. Once you have the ribs, all you
have to do is drill & bolt the horizontal & bracing, etc. With
this approach, the greenhouse is permanent - at least as permanent
as a commercial one.

Gene



"John T. Jarrett" wrote in message
...
Greenhouses...
http://www.westsidegardener.com/howto/hoophouse.html
http://www.floridagardener.com/green...ematerials.htm

I think after watching the little girl in the first one build her
daddy's, you could come up with something pretty quick.

hth,
John



"Bob" wrote in message
.. .
Anyone have instructions for assembly of a simple PCV coldframe?