Pennsylvania's foundation drilling contends with both abandoned anthracite and bituminous coal mine voids in the state's historic mining regions and karst limestone terrain in the south-central counties, presenting PennDOT and commercial developers with borehole conditions conventional drilled piers cannot reliably cross.
This pattern is consistent with the broader Subsurface Void & Sinkhole Problems challenges GSI addresses across the state.
Steel casing on Pennsylvania cased micropiles bores through abandoned mine voids in the state's historic coal regions, a legacy condition that has complicated foundation work for decades. GSI's cased micropiles capability supports this step.
Cased micropiles founding below Pennsylvania's mine-affected or karst zones are verified through test borings, since historic mine maps are often incomplete or inaccurate. This is one application of GSI's broader foundation bearing micropiles expertise.
Compression and uplift capacity is built into Pennsylvania cased micropile design, accounting for the full range of foundation demand across the state's mining and karst regions alike. GSI's engineers experience informs this approach.
This approach is informed by GSI's broader mining operations work across Pennsylvania.
Engineered for Pennsylvania's conditions. GSI's Pennsylvania cased micropiles address both the state's historic mining legacy and its karst limestone terrain — two distinct sources of borehole-collapsing voids. It's backed by GSI's broader commercial properties and our case studies capability.
Design/build delivery. A single team handles design and construction — closing the gap between what's designed and what's built.
PennDOT specification compliance. Design documentation and construction practices meet DOT specifications from initial design submittal.
PennDOT partners and Pennsylvania infrastructure owners describe GSI's cased micropiles results.
GSI's engineers are ready to assess cased micropiles conditions at your Pennsylvania site.