Pier depth in the Bluegrass depends on bedrock, not the block
Reaching stable bearing capacity through Inner Bluegrass karst limestone can mean a shallow, straightforward pier job on one lot and a much deeper one a few doors down, since phosphatic limestone depth varies across the region.
What a solid pier proposal covers
- Confirmed depth to bedrock at the specific address
- Contingency language for irregular karst voids encountered while drilling
- Helical versus push-pier reasoning for a crawl-space foundation
- Load-test results recorded at installation
- How existing cracks will be tracked after piers are set
Why crawl-space construction changes the approach
Since most of Lexington's residential ring was built over crawl spaces rather than basements, access for pier work often differs from what a basement-heavy market would require.