Jerzy Zemajtis, CTLGroup For long-span bridges, predictions of long-term deflections and prestress losses are important design considerations. The accuracy of these predictions can be improved when measured values of modulus of elasticity, creep, and shrinkage of the concrete to be
ATLANTA’S FIFTH RUNWAY BRIDGES
John A. Heath, Heath & Lineback Engineers, Inc. Hartsfield-Jackson Atlanta International Airport is in the midst of a major upgrade and facilities enhancement. The work includes a new parallel runway designed to accommodate the largest airplanes in service, design, or
LOUSIANA’S HPC DEVELOPMENT
Paul B. Fossier, Louisiana Department of Transportation and Development and Harold R. Paul, LouisianaTransportation Research Center Louisiana’s interest in high strength concrete (HSC) and high performance concrete (HPC) was initiated in the mid-1970s by the Louisiana Department of Transportation and
CONCRETE SUPPLIER’S CHALLENGES
David Hand, Wando Concrete, LLC Mix design, batching, transporting, and testing of the concrete for the Cooper River Bridge project posed some challenges from a producer’s standpoint. The first challenge was to develop cost-effective mixes that met the required specifications
CONSTRUCTION CHALLENGES
Wade Watson, Tidewater Skanska Palmetto Bridge Constructors, a joint venture of Tidewater Skanska and Flatiron Constructors, Inc., was awarded the $531 million contract for the construction of the Cooper River Bridge in July 2001. Construction began in earnest in January