Micropile construction commences with a detailed review and understanding of the micropile construction specification and project drawings. Dimensions of permanent materials including casing, all-thread-bar are common for all types of micropiles/ For rock bonded micropiles, the minimum embedment into rock [ Read More… ]
The Eastwood Elementary School, located in Morgantown, WV, is a recently completed WV DEP Environmental Award winning facility. As a Subcontractor to the General Contractor for the project, Coastal’s portion of the work included drilling strategically located boreholes, placing of [ Read More… ]
This project called for the installation of 278 high-capacity, post-tensioned, multi-strand rock anchors. The anchors ranged in size up to 61-strands with test loads approaching 3000 kips. The anchors were installed in 15-inch diameter boreholes to deviation tolerances of less [ Read More… ]
The Kentucky Lock is an existing 600 foot long navigation lock located on the Tennessee River near Grand Rivers, Kentucky. The US Army Corps of Engineers constructed a new 1,200 foot long navigation lock landward of the existing lock. The [ Read More… ]
The New Ragged Mountain Dam is located approximately 4 miles west of the Charlottesville, Virginia. The project included construction of a new earthen dam, an adjacent tunnel system and raw water pipeline to serve as the principal spillway for the new [ Read More… ]
Project required the drilling of thirty-four 17.5” diameter pilot holes for future 96” diameter pump shafts that would be drilled utilizing blind bore techniques. The pilot holes were drilled in two passes with the initial 8” hole being drilled using [ Read More… ]
Limited mobility grout is injected into void spaces within soil or rock, soft soils, or the soil-filled cavities of the bedrock, to improve the subsurface soil and rock conditions by filling the void spaces and replacing soft, loose soils with [ Read More… ]
The installation of 28 permanent rock anchors and 109 passive dowels on the face and crest of the dam associated with the remediation efforts to improve dam stability. The structure is under the governance of the state Fish and Boat Commission [ Read More… ]
