I have got one of those sectional concrete garages, where vertical sections are bolted together to form the structure. The whole garage is now leaning ever so slightly to the right such that the up and over door is sticking and wont close properly Whats the best way of getting this garage upright again?
There's no *best way* really. One way could be...
Obtain some 8' concrete fence posts, about 4 should do, more if you can afford to and have space. Dig a hole about a foot in from the corners (outside) about 18" square by 3' deep and then equi-space the other holes per post along the side that is leaning away. Either jack or winch the structure upright and temporarily secure at that point. Insert posts into holes as close to the sides as possible and concrete in, tamping the mix down tight. When set, bolt through the sides to the posts using ½" studding and large washers where required. Packing out with thin timber may be required to keep the gaps tight. After all is set release the retainers and check vertically. Tighten or replace any suspect existing bolts that hold it all together inside. Re-align door.
If it's really not much, have you got anything solid (like a tree) in the direction that you need to pull? I'd be thinking about using a tow rope or lifting sling as a tourniquet. How you keep it in the right position depends rather on why it has started leaning; Loose or corroded bolts? If you can straighten it up, is there a gap which opens up as you move it and can be grouted with sand/cement to that it stays true when you remove the pull? And of course, are you sure this isn't a warning sign that it is about to collapse? If so, tackle with very great care!
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