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Practical Design Considerations for Large Marine Structures in South Carolina

Robert E. Dullanty Sr., P.E. Principal Engineer Schneider & Associates, Inc.

Abstract Criterion 3 of ABET 2004-2005 Criteria for Accrediting Engineering Programs requires that all engineering programs seeking accreditation manifest that their graduates have an ability to “function on multidisciplinary teams.” Students should be able to serve as both a team leader and a contributing member of a design team. This paper presents a case study of two heavy marine structures in the Charleston, South Carolina. Heavy marine structures typically involve large and unusual loads from cranes, ships, and cargo; generally are supported upon weak and sloped soils; and usually require significant design considerations for marine and coastal environments including corrosive conditions. Marine structures provide for excellent classroom case studies because they inherently require multidisciplinary evaluation and site specific engineering solutions.

Introduction This paper discusses practical design considerations for large marine structures in South Carolina. As examples, it uses two projects from the South Carolina State Ports Authority. The first project is the evaluation and upgrading of container crane rails at the North Charleston, SC, terminal, and the second project is the investigation and evaluation of an existing 1940’s era warehouse foundation for use as a new wharf foundation in Charleston, SC.

The South Carolina State Ports Authority operates six waterfront sites that handle containerized cargo, bulk cargo and break-bulk cargo. As a container port, Charleston generally ranks fourth in the U.S. in terms of containerized cargo volume. This is done through four terminal sites located in the Charleston, South Carolina area. The South Carolina State Ports Authority also operates two smaller bulk and break-bulk ports located in Port Royal, South Carolina and Georgetown, South Carolina.

Evaluation and Upgrade of Container Crane Rail Beams at the North Charleston Terminal The South Carolina State Ports Authority (Ports Authority) needed to upgrade container cranes at its facilities and decided to acquire new cranes and relocate several exiting cranes between their various Charleston area terminals. The North Charleston Terminal was slated to have some “middle aged” container cranes relocated to the terminal to replace the Ports Authority’s oldest container cranes. These new cranes were faster, reached farther, and of course, imparted higher loads onto the supporting wharf.

“Proceedings of the 2005 American Society for Engineering Education annual Conference & Exposition Copyright © 2005, American Society for Engineering Education”

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Dullanty, R. (2005, June), Practical Design Considerations For Large Marine Structures In South Carolina Paper presented at 2005 Annual Conference, Portland, Oregon. 10.18260/1-2--14540