Extend Legs On Metal Carport. The simplest method would be to purchase pipe at least schedule 40 in a diameter that will fit over the old pipe. You will want to purchase extenders that are similar in size to the width of the actual poles that you currently have in place.
Versatube® 20' w x 4.5' l x 7.5' h extension kit. You really cant do it one leg at a time because it would bend up the framing. If you have an attached carport right now that fits just one car, you may want to extend it so that you can fit another one in.many times people will have a carport and then need to expand it.
These ground supports go 5 feet deep and are reinforced with concrete.
Assuming you would have a way to lift up the carport it could be done. 10'w x 20'l x 7'h metal arrow carport available in lengths up to 100' retail price: In some cases you may need to trim the sheet metal to match your metal carport sidewall height. You really cant do it one leg at a time because it would bend up the framing.