Soil Stabilization/Settlement Control
Fracture grouting to mitigate excessive settlement of a 9-story masonry structure induced by adjacent construction activity.
Permeation grouting in advance of sheetpile excavation support installation to provide settlement protection for an aging structure with a rubble foundation along the excavation alignment.
Installation of 110, 30-kip tieback anchors and placement of shotcrete facing to remediate a failing, 500-foot long gabion wall. A remote drilling system was developed to overcome direct access restrictions.
Emergency response liquid nitrogen ground freezing, accomplished through horizontally drilled freeze pipes, to create a canopy of frozen ground above a TBM stalled by loose subsurface conditions, allowing it to advance without further incident.