I built the structure with an original purpose to put up the panels at my house. It is 30x40. The secondary thought, make it high enough to put a trailer under. Since I did not know if it was going to be a fiver or towable, I went higher. Just an aside, my power bills went from over 4K a year in 2011, to under 350 a year since. Cost of the solar? 9,700. Yes, it is very cost effective! Your costs may differ.
1987 Starcraft Nova tent trailer, purch. '87, sold 8.14
2013 Crusader 290RLT bought new, 8.14 lotsa mods!
2001 Ford F-250 7.3
Loving wife, R.I.P., 6/6/19
and Mason the always dirty dog! R.I.P, 2/19