Post Tensioning Systems Case Histories:
Chesapeake & Delaware Canal Bridge

The Chesapeake and Delaware Canal Bridge is located Between Dover and Wilmington Delaware. This Bridge was designed by Figg Engineering of Tallahassee, Florida. The design chosen was a cable stayed twin precast segmental box girder with 750 ft. main span and 138 ft. vertical clearance for the 4,650 ft. long bridge. There will be a total of 545,560 sq. ft. deck and will be completed in the fall of 1995. Recchi America, Inc. is the general contractor and chose V.S.L. Corporation as the Post-Tensioning firm. V. S. L. Chose Williams 1 3/8" dia. ASTM A-722 All-Thread-Bar for their post tensioning bar applications. Recchi America also is using Williams for their temporary bar needs within the structure. The advantages of the stop-type coupling and the ability to torque tension the bar in the field has proven to be a time and labor savings, because this operation can be done accurately by hand with deep sockets and torque wrenches. The torque tensioning operation eliminates the need for the large center hole test jacks.

Main Reason They Chose Williams