Lexington's expansion eastward into deeper residual clay and old alluvium has pushed engineers to stabilize fills over karstic limestone. The Inner Bluegrass geology creates a sharp contrast between competent rock and loose near-surface deposits—a profile that vibrocompaction handles well when designed correctly. We prepare vibrocompaction plans for commercial pads, warehouse slabs, and roadway embankments where differential settlement across pinnacled rock would otherwise be unacceptable. Field data from CPT soundings and grain-size curves feeds directly into the compaction grid, depth targets, and amperage profiles. Complementing the design with a CPT test lets us calibrate the required relative density before mobilization, which is critical when the contractor is on a tight schedule.
A three-foot spacing difference in the compaction grid can cut post-treatment settlement by half—or double it if the influence radius is misjudged.
