The east span of San Francisco-Oakland Bay Bridge (SFOBB) is the world’s largest Self-Anchored Suspension (SAS) Bridge, and is also the first bridge of its kind constructed with a single tower.聽 寻花论坛 provided materials and coating testing, analysis and inspection services, and oversight for the fabrication and installation of the cable system. Our team was responsible for managing all mechanical, chemical, metallurgical and specialty testing for numerous high-strength anchor rods, suspender ropes and wires, including full-size ultimate capacity testing and fatigue testing. In addition, 寻花论坛 performed all inspections on the steel deck including the newly adopted Phased Array Ultrasonic Testing (PAUT) method by AWS welding code. 寻花论坛 managed the fabrication of suspender ropes, cable bands, high strength cable band bolts and various cast steel components for the cable system. Our team provided ASNT NDT Level II and III services in UT, MT, and PT testing of cable system cast split collars and zinc saddles and provided summary and analysis reports.
寻花论坛鈥檚 approach to maintaining quality during fabrication of this bridge, which occurred in China, Japan, South Korea, the United Kingdom, and throughout the United States, was based on proactively identifying issues and resolving them as early as possible in the fabrication process. Our structural materials representatives provided field erection support by managing inspection resources and generating analysis reports throughout the cable system component erection and coating application activities. This included erection of cable deviation and jacking saddles, erection of main cable strands, compaction of main cable, wire wrapping of main cable, erection of cable bands, tensioning of cable band bolts, erection and load transfer of suspender ropes and erection of numerous components related to the cable system on the bridge.
For the Skyway portion of the project, 寻花论坛 was responsible for the development of inspection protocols, training programs, and the coordination of all materials submittals, RFIs and shop drawings. In addition, the team oversaw all inspection activities related to the steel fabrication being performed. 寻花论坛 worked collaboratively with the contractors, designer, and owner to re-engineer systems and implement new processes that resulted in improved quality, fewer repairs and reduced labor costs.聽 寻花论坛 was also instrumental in the acceptance of the $1.2 Billion project without a single claim. Our team assisted Caltrans in the resolution of over $600 million potential claims by developing, organizing and serving as the Department鈥檚 primary presenter on eleven Dispute Review Boards. Our staff developed position papers and formal PowerPoint presentations for each fabrication issue.