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| We did what you're wanting to do about 10 years ago on a pole barn that the posts were all practically rotted off underground. We started in the middle on one side. First made a post out of 2x8s with the center 2x8 cut shorter to fit around the joist. Put a 30T hyd jack under the post & jacked up on the truss back away from the column about 6-8' to take pressure off the existing column. Then using a 3pt post hole digger we dug down as close as possible in front of the column till the hole was as deep as the column. Then using a transit we jacked the truss up till the building was slightly higher that the highest corner of the building. Next measured & cut the old post off so that the perma-column could be slipped underneath. Bolted the brackets of the perma-a-column to the old post & using concrete pads, shimmed underneath the perm-a-column so that when the jack was lowered the truss was level with the highest corner. Went around the whole building doing that. We raised the lowest corner 4", now the building is lvel again, probably more level than when it was built.
As posted, there are different size perm-a-columns, depending on the size of your posts. On our building the door post were larger than the other posts. IIRC, the door posts were 6x8s & the other posts were 6x6s. Bigger perm-a-olumns were $65 & the smaller were $50 but as I said that was several years ago. We put up a new building in 2012, used 8x8 perm-a-columns. At that time they were around $100, but worth every penny IMO. I wouldn't build another pole barn without them. | |
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