replacing pier foundations


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Old 09-03-06, 06:14 PM
W
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replacing pier foundations

I would like to replace pier footers in a 1920's house. Currently the house has concrete footers under wooden beams about every 8' along the perimeter. The space between posts is then underpinned. I would like to replace the underpinning with block. Should I pour between existing footers or raise the house and do one pour
 
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Old 09-03-06, 06:34 PM
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I would remove all of the underpinning, then redo the piers, like so:

Build plank pads of 2x8 or 10s, 24" long, at least 2 layers placed perpendicular as close to each pier as possible. I would rent some 10 or 20 ton hydraulic jacks, jack each pier and replace with 8x8x16 solids, 4x8x16 solids, 2-1/4x8x16, and 1-5/8x8x16 shims as piers. Scrub the block back and forth to ensure good jointing, release the jack and move to the next one. I would then go back with a manufactured stone over the stucco underpinning.

If you want to build structural perimeter walls, you are out of the range of Do it Yourself.
 
 

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