This is just two 10' pieces of 3/4". The arch is one 10' piece. I left 10 inches from each end, then marked every 5 inches in between. At those marks, I bent the pipe at 10 degrees. With the pipe bender recommended by Jake in one of the videos, it was easy. The little insert that can keep you from bending too far really makes it work well.

Another 10' piece is cut in half, and then driven about 1 foot or so into the ground with a post driver. The arch is then attached to the top with MakerPipe connector, and a screw driven through each terminating end.

I'll do a few more of these to make a tunnel, with a tarp "roof". (Halloween is almost here!)

Note - when getting one of those pipe benders, though, test the handle end to be sure the EMT pipe will fit inside it without issue. Home Depot had 3 in stock, and in 2 of them, the 3/4" pipe did not fit. (Maybe there was a slight ding in them?) Just check to be sure the pipe will fit in the handle end, because once you are done with the bends, you will likely still need to insert each end into the handle end, and fine tune the bend on the ends so they end up pointing straight down.