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.
Port of Oakland tenant SSA Marine increased the lift height of four 1999 Port of Oakland ZPMC STS cranes by 26 feet to accommodate the larger vessels calling at the port.
SSA Mexico relocated a 50’ gage Paceco crane from the Port of Long Beach, California, to Manzanillo, Mexico. The crane was built around 1980 and was raised in the late 1980s. Liftech provided engineering to change the gage from 50’ to 55’ and for the associated rigging work. The frame was strengthened for higher wind loads, and new stowage brackets and tie-downs were added.
Horizon Lines and Matson Navigation purchased three Hitachi cranes located in Los Angeles, California, for relocation to Guam. The cranes were upgraded and strengthened for typhoon winds. Upgrades included a lift height increase of 8 feet, new drives and controls, diesel power, and new tie-downs.
Liftech has been involved in review and modification of several revolver cranes. Our revolver crane work includes: • Conversion of an IHI revolver crane from shore power to diesel power and relocation to another location
Terminales Rio de la Plata S.A. purchased two ZPMC cranes in 2005 and 2007 for their Buenos Aires terminal. The cranes, with 65 LT capacity, 18.5 m rail span, and 36-m lift height, had a 45-m outreach. Liftech provided engineering services to TRP to extend the outreach by 6 m to 51 m. Liftech initially provided a study, which verified that the calculated wheel loads for the crane with boom extension were within the allowable values, and the modified cranes met the specified stability requirements.
APMT operates ten Noell machinery-on-trolley cranes at their Pier 400 terminal in Los Angeles. The original trolley structure was torsionally rigid. Some of the diagonal members cracked due to warping caused when one wheel is out-of-plane to the other three. Liftech provided design modifications to reduce the stresses in the members due to warping.
APL Limited purchased 12 Noell machinery-on-trolley cranes in the mid-1990s for their Port of Los Angeles Pier 300 terminal. The cranes were rated for 50 LT and have a 50’ backreach. The backreach for all cranes was extended 28’ for storing hatch covers. The original girder was sufficiently long to accommodate the additional 28’ backreach.
Massachusetts Port Authority (Massport) purchased two Kocks low profile cranes from the Port of Oakland for capacity expansion of their Conley Terminal. The Oakland post-Panamax Kocks cranes were a near-perfect match for the Conley Terminal. Low profile cranes, also known as shuttle boom cranes, are used where overall height is restricted because of aircraft clearance requirements.
APL modified and relocated a late 1980’s MES post-Panamax crane with articulating boom from their Kaohsiung, Taiwan, terminal to their Dutch Harbor, Alaska, terminal. Liftech provided the structural design for modification and relocation of the crane and reviewed the contractor’s work.