The derrick will be used to erect the major components of the San Francisco/Oakland Bay Bridge self-anchored suspension span. The crane with a 100m (330ft) boom has 1,700t capacity at 60 degrees. The crane has two auxiliary hooks with capacities of 100t and 10t. The boom is configured to lay down for transport within the USA river system. The 100ft (30m) wide x 400 ft (122m) long barge has removable floats for increased stability. The derrick and barge floats are made by ZPMC in China. The barge was fabricated by US Barge LLC in the United States and towed to ZPMC for mounting the crane.
Liftech’s services included development of the technical specifications, design review and assistance, and fabrication review assistance.
* The company welcomes back professional engineer Sugiarto Loni, who left the company in 1992 to work as president and managing principal of the planning, architecture, and engineering practice of former sister company JWD.
