I know there are a couple similar "ibles" out there. in fact a recent one was the inspiration for this build, that and the fact that I found a large amount of pvc pipe on the trash. Some of you may recall my obsession with Haunting my yard for Halloween http://www.instructables.com/id/Our-2010-Haunted-House-with-ideas-from-Instructabl/ We use portable carports for the Haunted House, this Experimental build was to see if this type of "tunnel" would work
My first step was to stare at this mess of pvc pipe I found and brought home, hmmmmm, those 1" pipes could make a hoop house... Those 2" pieces could make supports. I should explain that here in Florida driving stakes into the sand doesn't give much support unless your using a screw type mobile home tiedown stake 3 or 4 feet in the ground.