The client operates terminals at a port in southern China and wanted to procure five new super post-Panamax cranes for a terminal with limited wheel load and tie-down load capacity. ZPMC proposed a truss boom and girder design to reduce wheel loads and tie-down loads. Liftech assisted the client by participating in the conceptualization and design of the upper works structure…
Liftech assisted Sydney International Container Terminals Pty Ltd with structural design and review of four post-Panamax ZPMC low profile shuttle boom cranes for their new container terminal across from an airport in Sydney, Australia.
Bigge Power Constructors has built large capacity derrick cranes intended for large scale modular construction of nuclear power plants. Each crane rolls on a circular track. This particular application required a capacity of 4,000 short tons at a radius of 240 feet from the center of rotation, 836 short tons at 640 feet, and 500 short tons at 790 feet.
ZPMC supplied an 8,000 t double boom shear leg floating crane to Samsung Heavy Industries Company Limited. The crane has 8 main hooks, each with a 1,000 t capacity. The crane is rated for 8,000 t at 82 m from boom heel. Liftech assisted ZPMC with developing the overall concept and layout, and designing various crane structural components.
Liftech conceptualized and designed the Articulated Balance Crane (ABC) concept, a design that reduces the weight and wheel loads of ship-to-shore (STS) cranes. Operationally, the ABC functions similar to a conventional STS crane. For stowage, the elongated boom and apex rotate as a unit about hinges near the top of the waterside legs, providing vessel clearance, while the machinery house…
Liftech participated with APM Terminals to conceptualize and design FastNet, a crane technology that enables STS gantry cranes to work adjacent, instead of alternate, bays of a large container ship. APMT estimates that FastNet can deliver berth productivity of 450 moves an hour.
The owner of a 42-year-old goliath gantry crane planned to improve its functionality and reliability to perform specialized lifts over the next decade. Liftech and McKay International Engineers assessed the existing structural, electrical, and mechanical systems. The structure was reviewed for increased hook loads and current hurricane and seismic design loads.
Liftech provided structural design review of a bauxite unloader in South America. We reviewed the workmanship of the primary structure, performed finite element analyses, reviewed design drawings, and provided wheel load and stability calculations.
Liftech provided design assistance and review services to American Bridge/Fluor Enterprises (ABF) for procurement of a shear leg derrick. The derrick is used to erect the major components of the San Francisco-Oakland Bay Bridge self-anchored suspension span. The crane with a 100-m boom has 1,700 t capacity at 60 degrees. The crane has two auxiliary hooks with capacities of 100 t and 10 t. The boom is configured to lay down for transport within the USA river system.
Two bauxite unloaders of identical design have been operating for over 50 years. The operator wished to continue operations for another 15 years. Liftech analyzed the crane structure to assess the fatigue life for continued operations.