
North Fork Spillway Soil Nail Wall
North Fork Spillway Soil Nail Wall
Brayman was subcontracted to provide specialty geotechnical construction services in support of a spillway expansion project at the North Fork Dam near Asheville, NC. This dam is located at the Black Mountain Reservoir, which provides the water supply to the City of Asheville. Brayman’s scope of work included the installation of a 5,719-square-foot soil nail wall.
The project involved complex geotechnical solutions to stabilize the spillway and ensure its long-term functionality. Reinforcing steep slopes and controlling erosion were required, making the application of soil nailing and shotcrete essential to maintaining structural integrity. We used pressure grouting to install permanent tiebacks, achieving pressures of up to 140 PSI for maximum stability. To improve efficiency, we applied shotcrete to form 21 custom anchor blocks in place, instead of relying on standard precast blocks. This approach allowed for more streamlined block placement and faster tieback testing, significantly enhancing the overall project timeline and performance.
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