Attached Garage

Old 05-23-02, 03:44 PM
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Attached Garage

I am going to add an attached garage on to my existing home. When I built my home, I put it on a 5" slab with 32" beams on exterior walls, and 1/2" steel on 10" centers. I did not put any piers under it. I know that I have to drill into my existing slab to attach the new slab, however, I would like to know if I need to put piers under the new slab. The current slab moves a little, but I do not have any known current foundation problems.
Old 05-26-02, 11:02 AM
Join Date: Aug 2000
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"A house constructed on well compacted, non expansive fill, with large grade beams and subterranean piers have the least likelihood of foundation movement becoming evident. Even these houses should be constructed with the foundation not attached to the tops of the piers. The foundation slab should be allowed to float up and off the piers if the soil expands or contracts." Retrieved 26 May 2002.

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