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Foundation appears to move up or down

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Asked: September 22, 20202020-09-22T14:04:26-07:00 2020-09-22T14:04:26-07:00In: Foundation
hbgtbt
hbgtbt

hbgtbt

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hbgtbt User

Good afternoon Folks:  If my foundation appears to move up when we get heavy rains and then back down when we have no rain for months – other than this being an irritant ; does this generally mean there is a foundation repair issue?  I ask because I am concerned about a contractor giving me a FREE estimate and telling me that because my foundation moves up or down then they ( I ) need to repair it.  I have heard all my life that ALL foundations in Texas move, but that does not mean there is a repairable condition.

Thanks

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  1. Kuldeep Singh

    Kuldeep Singh

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    Kuldeep Singh Learner
    2020-09-23T15:06:50-07:00Added an answer on September 23, 2020 at 3:06 pm

    Hi there!

    I’d like to point it out that if foundation movement doesn’t necessarily mean repair is needed, it doesn’t necessarily mean that repair is not needed. Does it?

    Foundations undergo differential or non-differential settlements. Non-differential settlement is not such a big cause of worry, but differential settlement can take your foundations beyond repairability in a few years’ time. They’d need to be completely replaced, which could be very costly. Also, it’ll need underpinning which is not very suitable in some kinds of soil.

    Apart from this, there’s another question that how much is your foundation moving. If it’s a lot then it’s a no brainier. You need to get it repaired. Your country’s codes for Settlement calculation in buildings and foundation design will help you out in this. You can look them up.

    Also, your foundation may either bulge or tilt. That factor also plays a role in deciding whether it needs to be repaired. Lastly, look up if there is a crack developing in the foundation if you could. If it’s a vertical crack, it’s an indication that vertical movents are causing serious problems. Even if there are horizontal cracks, it’s better to get the foundation repaired.

    PS : It’ll be best if you took an experienced foundation engineer to look into the matter.

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  2. Komal Bhandakkar

    Komal Bhandakkar

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    Komal Bhandakkar AUTHOR
    2020-11-21T17:43:00-08:00Added an answer on November 21, 2020 at 5:43 pm
    This answer was edited.

    The vertical movement in foundations is caused by :

    1. Either downwards movement of the wall or wall footing, when a wall footing sinks in soft soil.
    2. An up and down movement of the wall or wall footings such as when a wall is disturbed by frost in a freezing climate
    3. Expansive clay soils expand or shrink as their water content increases or decreases.

    Thank You.

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