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Posted by Italian Mason on April 4, 2007, 6:04 pm
> I have a two-story house in Southern California and recently had a fresh
> water line break in or under the slab it's built on. I suspect the soil
> under the slab is high in clay content.
> The water that came inside the house was enough to wet the carpet across a
> ten by four foot area so it was not a great volume. The restoration has
> proven to be a major project and the next phase will be a very expensive
> floor. The house has been repiped throughout since the leak.
> My water bill indicates I used about 800 cu ft more than usual during that
> period. I did not notice any runoff outside the house so I am speculating
> that most of it went under the slab.
> I am now wondering if the slab has enough support left to keep from
> buckling.
> Is this something I should be concerned about?
> Thank you,
> Mike
Hi Mike,
You know its really hard to say from your description of the water
volume my first response would be NO its not a concern. However if
this leak had gone on for a long time and undermined a large amount of
dirt it may be an issue but still then I would only be concerned if it
was near a corner or a load bearing wall. If you are in CA there is
already plenty of rebar in place to hold the slab and house weight. A
simple test you can do is take a small sledge hammer and hit the floor
(not to hard as to chip it) in the area of the leak and then in an
area away from the leak if you hear a sound difference then there has
been erosion. Is this a concern..again probably not. Is the slab post
tension? or standard? If you do not know check your garage floor if it
is post tension there will be a stamp in the floor indicating this.
Good Luck
http://www.palmisanoconcrete.com
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> water line break in or under the slab it's built on. I suspect the soil
> under the slab is high in clay content.
> The water that came inside the house was enough to wet the carpet across a
> ten by four foot area so it was not a great volume. The restoration has
> proven to be a major project and the next phase will be a very expensive
> floor. The house has been repiped throughout since the leak.
> My water bill indicates I used about 800 cu ft more than usual during that
> period. I did not notice any runoff outside the house so I am speculating
> that most of it went under the slab.
> I am now wondering if the slab has enough support left to keep from
> buckling.
> Is this something I should be concerned about?
> Thank you,
> Mike