Key Achievements Application Technique Market sector Owner Main contractor Engineer Keller business unit (s) NASHVILLE INTERNATIONAL AIRPORT NASHVILLE, TENNESSEE • McKinney Drilling Company (MDC) safely operated amongst other subcontractors and completed the project while allowing the airport to run simultaneously during construction. • Upon MDC’s counsel, Hensel Phelps agreed to use the more efficient BarSplice terminators to help replace hook bars. • The project A 115,000 ft 2 expansion of Concourse D and 200,000 ft 2 addition to the north and south terminals at Nashville International Airport (BNA) were planned. Initial overburden was a mixture of loose to dense gravel, sand, silty clay, and cobbles. Preliminary borings showed minimal seams and voids within the bedrock while ev

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