Liftech conceived a new crane concept, the Balance Crane, for unloading containers from large vessels and developed the design in collaboration with crane manufacturer ZPMC, Shanghai, China. The Balance Crane has reduced wheel loads and tie-down loads compared to a standard ship-to-shore container crane but functions similarly. The boom is continuous from the landside legs to the boom tip. The…
Archives: Projects
ZPMC Crane Raise and Boom Extension, Modern Terminals Limited, Hong Kong
Modern Terminals Limited planned to increase the lift height of four 2005 ZPMC STS container cranes from 42.5 m to 48 m. They planned to increase the booms of three cranes from an outreach of 62.5 m to 65 m, and one crane from 62.5 m to 63 m. This work is to accommodate larger vessels calling at their terminal…
Noell Crane Raise and Boom Extension, Modern Terminals Limited, Hong Kong
Modern Terminals Limited planned to increase the lift height of six 2005 Noell STS cranes from 44 m to 50 m. They planned to increase the lift height of another two 2005 Noell STS cranes from 41 m to 48 m and extend the booms from an outreach of 61 m to 65 m. This work is to accommodate larger…
Port of Oakland Crane X437 Demolition Plan
Liftech provided engineering to demolish the articulated boom Crane X437 at Port of Oakland Berth 37, including review of the associated wharf loads Power Engineering Construction Co. used their DB Pacific floating crane, a Liebherr LR1300 crawler crane, and a hydraulic mobile crane. The crawler and mobile cranes imposed large, localized loads on the wharf structure. Liftech’s scope included wharf review…
McLean High-Reach Floating Crane Feasibility Study
McLean Contracting Company needed a high-reach floating crane to install offshore power line supports in Baltimore. The highest lift was 400 feet above water. Liftech evaluated the feasibility of retrofitting their 400T Baltimore floating crane with a long jib to perform the lifts. Liftech developed the design criteria, assisted with developing a conceptual jib erection scheme, reviewed crane system strength…
Treasure Island Ferry Terminal, Treasure Island, San Francisco, California
Liftech provided the structural design of the steel float for a new ferry terminal located at Treasure Island. The design included the float structure, support and connection to the gangway ramp, guide pile collars to restrain the ramp laterally while permitting vertical motion, access for future battery systems, and berthing, mooring, and access systems compatible with WETA ferry vessels and…
San Francisco Public Works, Fire Boat Station 35 at Port of San Francisco Piers 22.5 and 24, San Francisco, California
This project was for the design and fabrication of a floating fire station in San Francisco. Liftech was the lead marine design consultant for this design-build project and designed a steel pier next to The Embarcadero; a steel access ramp between the pier and steel float; a steel float and associated items, such as fender supports and pile collards; and…
Moffett Field Hangar, Overall Project, Mountain View, California
At more than 1,000 feet long, 250 feet wide, and 170 feet tall each, two blimp hangars constructed in the 1940s at Moffett Field are among the world’s largest clear-span timber structures. One of these hangars had significant damage to many of its timber truss arches, and the damage was progressing along the length of the hangar to the extent that…
Moffett Field Hangar, Access Shoring Tower System, Mountain View, California
Liftech designed an access shoring tower system and strand jack assembling system. The access system is 80 feet x 80 feet x 130 feet tall. It is designed to shore and jack the hangar roof from its deck and facilitate access to the roof with an array of equipment on its deck including lifts and cranes. It is designed for asymmetric…
Moffett Field Hangar, Beam Jacking Procedure, Mountain View, California
A 20-foot-wide, 22-foot-tall, 200-foot-long wooden box beam above the hangar doors had deteriorated and sagged down onto the nested sliding door system. Liftech designed a jacking procedure and jacking system so Power could raise and repair the box beam. The jacking system included lifting and holding jacks. The lifting jacks had low friction bearings to allow the distorted box beam…