Accession Number : ADA269263

Title :   Disposal Alternatives for New Work Dredged Material Deepening of Norfolk Harbor.

Descriptive Note : Final rept.,

Corporate Author : SAN DIEGO STATE UNIV CA DEPT OF CIVIL ENGINEERING

Personal Author(s) : Stark, Timothy D. ; Briest, George R.

Report Date : AUG 1993

Pagination or Media Count : 69

Abstract : This publication describes the evaluation of various disposal alternatives for the estimated 12 million cu yd of maintenance and new work dredged material resulting from the proposed deepening of Norfolk Harbor from elevation -50 to -55 ft MLW. The U.S. Army Engineer District, Norfolk, Virginia estimated that 3 million cu yd of the dredged material will consist of sandy material which is suitable for dike construction. The remaining 9 million cu yd will probably consist of cohesive material and will require a disposal alternative. The disposal alternatives included; (1) expanding Craney Island using underwater dikes; (2) stabilizing the existing perimeter dikes using berms constructed of suitable dike material; and (3) raising the west perimeter dike from el +34 to el +40 ft MLW and raising the north and east perimeter dikes from el +40 to +45 ft MLW. It was concluded that Craney Island could be expanded using underwater dikes located along the six alignments proposed by Goforth (1986). The underwater dikes could be constructed using the sandy dredged material and the 9 million cu yd of cohesive material would be contained by the underwater dikes.... Consolidation, Dredging, Slope stability, Desiccation, Dredged material, Strip drains, Dike, Geotechnical

Descriptors :   *DISPOSAL, *DREDGED MATERIALS, CONSTRUCTION, DIKES, ENGINEERS, HARBORS, ISLANDS, MATERIALS, SLOPE STABILITY, UNDERWATER, VIRGINIA.

Subject Categories : Solid Wastes Pollution and Control
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE