"Lew Hodgett" wrote Update:

This will get you to a canopy example.

http://tinyurl.com/2dl6qfy

The best prices I have found on the connectors for the 1" EMT counduit is at

http://www.tarps.com/chrome2.htm

I have used them several times to set up canopies for various purposes. If
you are going to leave them up in any kind of weather though, you need to
bolt them to some planks or put the footing in some kind of concrete in a
pail or something.

I have done both. I buy the connectors from them, get the EMT tubing and
tarps locally.

More general info on canopies are on their homepage.

http://www.tarps.com/