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Scannell Triangle Brick Redevelopment

Construction, Geotechnical

Location

Durham, Durham County, North Carolina

About

GTA provided soil laboratory testing and construction observation and testing services associated with the development/redevelopment of ten (10) adjacent parcels of land encompassing approximately 240 acres in Durham/Cary, North Carolina.  Development at the site is anticipated to include over one million square-feet of industrial/warehouse construction, associated underground site utilities, stormwater control measures, and NCDOT roadway extension.  A portion of the site was previously occupied by the Triangle Brick Facility, which included an approximate 70 feet deep clay mining pit, with dimensions on the scale of a football field, which had been abandoned for decades.  Sitework for the project included over one million cubic yards of earthwork and fill depths approaching 80 feet.  During dewatering of the old mining pit and based on GTA’s experience with the local Triassic geology and the site soil and rock conditions, GTA provided soil remediation recommendations utilizing the on-site oversize material generated during site grading/blasting, to stabilize the bottom of the pit and limit the amount of material that needed to be excavated from the pit bottom.  This resulted in significant time and cost savings to the project/owner.  

During construction, GTA provided construction observation testing and Special Inspection services including earthwork observations, soil laboratory testing, and soil compaction testing.  Due to the significant grade changes at the site, blasting of rock was required to achieve design site grades.  Due to the significant fill depths at the site, GTA also performed settlement monitoring of the fill soils utilized to raise site grades in the areas of the old mining pit, to confirm when consolidation settlement of the new fill and underlying subgrade was complete.

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