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MULTI-CRANE LIFT WITH TWO Terex® CC 2800-1 cranes at airport construction site in berlin
ZWEIBRÜCKEN, September 14th, 2011 – Two Terex® CC 2800-1 lattice boom crawler cranes worked in tandem to help erect the steel frame for the maintenance hangar at the Berlin-Brandenburg International (BBI) airport construction site. More specifically, MAXIkraft Kran- und Schwerlastlogistik lifted the door truss and the roof truss central section segment on behalf of Industriemontagen (IMO) Leipzig GmbH on July 6th, 2011. Due to the large components involved, an erection team consisting of multiple cranes performed the double lift operation.
A net weight of 613 tonnes, together with a length of 153 meters, a height of 12 meters, and a width of 1.4 meters, should leave no doubt that lifting the hangar door truss was anything but a routine job for site manager Karl-Heinz Große and his project team. The enormous component’s purpose: After the hangar is completed, the truss will bear the weight of its roll-up door, which will be 153 meters wide as well and will enable aircrafts to enter the hangar anywhere along its entire width. “We had to erect the whole roof truss central section segment—which weighs around 240 tonnes—at the same time in order to make sure that we would get a structurally stable structure and would eliminate the need for expensive bracing as much as possible,” explains Karl-Heinz Große.
The Key to Success: A Perfect Erection Plan
When dealing with lift operations of this magnitude, detailed plans are a prerequisite for a project to achieve technical and financial success. In this particular case, the solution revolved around a “motley” erection team made up of a total of seven cranes that had to be coordinated with exact precision in terms of travel, reach, and lift. Twelve synchronized radios for crane operators, signalers, and the head of operations were used in order to ensure that information and instructions would get to their intended destination immediately, and surely enough, both lift operations went exactly as planned.
The door truss was first lifted and stabilized by the two CC 2800-1 units (working as the operation’s primary crane tandem team) with the help of another two 500-tonne telescopic cranes, after which it was moved 15 meters to its final horizontal position. Once there, the truss was brought to an installation height of 30 meters between the outer walls, where it was anchored. Terex also played an important role during this process, as several Genie® aerial work platforms were used in order to bring the necessary construction personnel up to the dizzying heights required for this work to be carried out. Once this was done, the two 500-tonne units increased their hook load to 100 tonnes so that the two Terex CC 2800-1 cranes would be able to unhook from the load and lift the roof truss central section segment together with two 300-tonne cranes. Once the central section segment was picked up, it was moved onto the door truss (still being held by the two 500-tonne cranes) so that it could be joined to the hangar’s rear wall, thus completing the second multi-crane erection operation.
MAXIkraft project supervisor Walter Bachmann explains why he decided to use two Terex CC 2800-1 cranes as the primary crane tandem team in his multi-crane erection team: “The first basic step, of course, was to simply select the cranes according to the corresponding loads. The second criterion consisted of making sure that we would have nearly identical movement sequences and speeds. The decisive factor in choosing the two Terex crawler cranes, however, was the fact that they have outstanding handling characteristics and reliability. These sophisticated and powerful models have proven time and time again to be ideal units when it comes to projects revolving around travelling and lifting movements that involve multiple cranes.” In addition to this, the crawler cranes’ high degree of flexibility, not to mention the short times required to configure them, also provided an important advantage. A 60-meter main boom, an 80-tonne counterweight on the superstructure, and a 60-tonne central ballast on the carrier rounded off the cranes’ ideal suitability for both lifts.
“Thanks to our perfect planning and performance with the right machines, this project turned out to be a smashing success for both us and our customers. We were able to leave the construction site right on time, at 10:00 PM. In fact, that was right before a huge summer thunderstorm hit. If we had taken a single second more, we would have been completely unable to finish our work on the steel frame,” happily summarizes Walter Bachmann.
Terex® CC 2800-1
With the help of specially developed additional equipment, the Terex CC 2800-1 lattice boom crawler crane can be converted from a standard crane to (for example) a special-purpose crane for erecting wind turbines, and back. These special components include extra-strong main boom connectors and a rigid luffing fly jib (LF2) with a length of 12 to 36 meters that was developed specifically for wind power-related applications. The available standard-based wind power combinations provide ideal lifting capacities and clearance while reducing transportation costs.
The crane’s carrier is available in two different models: the standard version and a narrow-track version, the latter allowing the crane to move through 5,3 meter-wide roads. The narrow track kit can be used with 1.5 meter-wide track. In addition, the crane can be supplied with a chassis designed for road travel. The basic machine, including all winches and the A-frame, can be transported within a 12-tonne axle load limit.
The high level of flexibility provided by these options and features saves time and money during transportation, setup, and disassembly, providing for a high level of cost-effectiveness in the process. Moreover, the time-tested Terex IC1 control system, featuring remote radio control capabilities for rigging, makes it possible to operate the Terex CC2800-1 easily, safely, and comfortably.
About MAXIKraft Kran- und Schwerlastlogistik
The MAXIKraft Kran- und Schwerlastlogistik Group spans four companies (MAXIKraft, MaxiMum GmbH, Kranlogistik Sachsen GmbH, and Kranlogistik Lausitz GmbH) and employs a total of about 400 people. This Herzberg-Züllsdorf-based company has 18 locations distributed across five states in Germany and provides crane services for work involving weights of up to 1,250 tonnes and transportation services for work involving payloads of up to 300 tonnes, as well as machine transportation and plant relocation services, steel and concrete assembly services, and tower crane transportation and erection services. For more information, please visit http://www.maxikraft.de.
Genie® equipment from Terex Aerial Work Platforms is built to provide superb reliability and safety when you are working at height. With a range that includes highly manoeuvrable material, personnel and scissor lifts to rugged telehandlers and articulating and telescopic booms with working heights of up to 43 metres, the Genie product line offers outstanding performance and value backed by a dedicated support team. For more information, please visit www.genielift.co.uk.
Terex Corporation is a diversified global manufacturer operating in four business segments: Terex Aerial Work Platforms, Terex Construction, Terex Cranes, and Terex Materials Processing. Terex manufactures a broad range of equipment for use in various industries, including the construction, infrastructure, quarrying, mining, shipping, transportation, energy, refining, and utility industries. Terex offers financial products and services to assist in the acquisition of Terex equipment through Terex Financial Services. More information on Terex can be found at www.terex.com.
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