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The slab settled from the sub-base not being properly compacted prior to pouring. To fix proper you should remove the portions of slab that have irregularly settled and pour a new slab up to the proper level.
Posts by AGWhitehouse
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The part of concrete directly along the wall is your foundation wall. They used the wall itself as the pour stop for the floor. Poor soil preparation and compaction has caused the slab to settle. As said before you can either use self-leveling compound to infill or remove and replace the slab making sure to prep the sub-base proper the second time around.
If there is a crawl space below this and the crack has a significant vertical change, then call a structural engineer to review for potential structural defficiencies. If there is a cral space and the crack has no vertical change then is from the floor deflection fighting against the rigid wall and causing a crack at the fulcrum point.
If there is a crawl space below this and the crack has a significant vertical change, then call a structural engineer to review for potential structural defficiencies. If there is a cral space and the crack has no vertical change then is from the floor deflection fighting against the rigid wall and causing a crack at the fulcrum point.
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"but I have no idea where you keep coming up this this assumption that there's any settlement......."
The OP doesn't actually say whether there is definately a vertical change between the two sides of the crack. but from the pictures I feel there may be one (1/2" at most). if there is a vertical difference then there is settlement. If they are level then there is no settlement.
I made the assumption based of my experience with this scenario. More times than not I find there are settlement issues because contractor's are rushed to get slabs down (owner driven schedules) and the sub-base compaction suffers for it.
The OP doesn't actually say whether there is definately a vertical change between the two sides of the crack. but from the pictures I feel there may be one (1/2" at most). if there is a vertical difference then there is settlement. If they are level then there is no settlement.
I made the assumption based of my experience with this scenario. More times than not I find there are settlement issues because contractor's are rushed to get slabs down (owner driven schedules) and the sub-base compaction suffers for it.
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