South East Correctional Facility State of Missouri, Department of Corrections Charleston, Missouri Back to Project List Vibratory Ground Improvement Exposed stone columns, measuring 3-ft diameter, are installed at 9-ft in an equilateral triangular pattern. Project Overview: Seismicity in the Charleston area is dominated by the New Madrid seismic source zone, the most active source zone in central and eastern United States. The 120 acre construction site is located in the Mississippi River flood plains. The building design was required to conform to Federal Emergency Management Authority guidelines 273 and 274. Layne GeoConstruction improved and stabilized 13 acres of building area, to facilitate construction of 5 housing units, an administration building and 8 additional support buildings. A total of 7,900 vibro compaction/stone column points were completed prior to commencement of the correctional facility construction. The ground improvement program was completed on time and within budget.     Value of Work Performed: $3,950,000 Project Duration: 4 months Project Completion Date: March 1999 Project Reference: Owner: State of Missouri Department of Corrections Divisions of Design and Construction Scott Dressel (573) 751-9203