Before assembling my Squidget, I first determined that the top of the fan cover would be 4”-6” higher than the cross members of my portable garage. I did some calculations and saw that I could get the assembled trailer out from under the portable garage by removing the tires and wheels and rolling it on the hub flanges on “tracks” of plywood laid down to keep the thin edges of the hub flanges from sinking into the ground. That is what I did with an inch to spare above the fan cover.
Mine is constructed of galvanized tubing about 2” in diameter and has three frame sections that span the width and height of the unit. Each section has a vertical tube on each side with a cross member and the angled roof members (forming a truss) connected to the top of each vertical pole. Each set of three sections are connected to each other by five 10’ tubes running front to rear, at 1’ from the bottom and at the top of each vertical pole on either side, and at the peak of the “trusses”. Each vertical pole is set in the ground in some concrete.
Here is how I would attempt to raise the height of my portable garage if I had needed to raise the height. In this illustration, I am raising the height by 2’, the maximum height increase I would attempt using this method. I would buy 12’ of heavy cardboard tubing used for pouring footers for decks in a 6” width if I could find it that size, and 30’ of galvanized tubing just large enough to allow the vertical tubes of my garage to fit inside them. I would dig up the six poles and remove the concrete. Six pieces of the cardboard tubing, 2’ long, would be set in the ground, dirt packed around them, and a 3” pad poured in the bottom of each. A 5’ section of the larger galvanized tubing would be set in the hole on the pad and concrete poured around them, carefully aligning the galvanized tubing so that the six vertical poles would fit in them. I’d either pour concrete inside the galvanized tubing up to 2’ above ground level, or put a 4’ spacer of wood or PVC inside each pole, leaving a 12” space at the top.
With some helpers, I’d pickup the portable garage frame and put each vertical pole down inside the new pipes and secure them with two bolts as shown in the diagram below. I would also buy four ground anchors and rig some diagonal bracing of galvanized cable on either side to help secure the unit against the high winds we get here during hurricanes.
