Here are few picture of the pvc I used to secure the plastic in place (3/4 pcv cut in half screwed with self taping screws)
The 4th picture is the only thing I see happening to the galvanized pipe no rust just the white stuff.
The last picture is a 1500 watts heater(I know is dangerous, it is connected to a GFCI) it works really well to keep the snow and ice of the cover and at night when the outside temp drops bellow 32F I turn it on and it keeps the air inside the cover around 55 F
Jesus