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jkjpatchpat
10-04-2005, 07:14 PM
We live in a condominium consisting of 8 units. Over a year ago one of the residents complained about a crack in the wall. THe mgmt company at the time had a concrete company come in and do "lift" to the slab is what we were told. 6 months later on the south end of the building all of a sudden they are doing something called piering. DUring this time we had requested the entire building be inspected as we were experiencing cracks in outside walls, inside walls, floors, etc. SInce the work was done on the one end of the building - the damage on our end of the building has increased. A general review conducted by a privately contracted engineer indicates potential horizontal shifting. THe building sits on a hill, on the end of a lake. WE have lost several feed of shoreline, have seen muskrats and is over 30 years old - apparently built on some type of fill. ANy recommendations on what questions we should be asking, now that they have decided to finally hire an engineer themselves to survey the situation. The 4 units on our end of the building all all severe shifting in doors, some do not even shut, cracks in the slabs of our floor, corners cracking in walls, as well as diagonal cracks in walls, etc.

TJ1962
10-07-2005, 10:19 AM
You have an interesting scenario, that unfortunately we have seen before. The engineer and/or geo-tech has to determine if there is a settlement issue or a sliding scenario.

There should be soil borings performed and a search for fault line that would create a slide: sidewalks sliding, trees and shrubbery leaning (growing on an angle), corners of structure opening while pulling away from each other "slide factor" or seperating due to one side settling and the other not "settlement". A slide gives different clues that straight settlement but is easily missed upon an initial foundation inspection.

If there is horizontal shifting (slide) piering alone may not accomplish goal, for piers are not designed for horizontal loads. The solution of design may include a retaining wall to hold back soil shift/erosion and tie-backs to good soil.

Unfortunately this is not an easy or inexpensive problem.