During construction of an office building in Spain, rental company Remayser erected three tall Linden Comansa tower cranes. Although it is not unusual to see 90-meter-high tower cranes working in Barcelona’s new business district, these three cranes are working at 89 meters without tie beams to an adjacent structure.
The tower cranes were needed to build the Parc Glòries office building, due to its narrow and long ground plan. The diaphanous design of its 17 floors didn’t allow for the tower cranes to be tied to each corner of the building or any column or structure, but it was necessary to use the tower cranes to finalize the job. Remayser’s engineering service found the solution and submitted a project based on Linden Comansa’s modular system, which combines different mast sections in the same crane through transition sections.
By placing the stronger and wider mast sections in the bottom part of the tower (the 2.5-meter-wide sections first, then the 2-meter-wide, and finally the 1.2-meter-wide on top), Remayser was able to erect both machines. Those Linden Comansa cranes, model LC5211, are now working at a freestanding height of 89 metrers, without any anchor tie to the building, as the cranes are totally secure with this tower configuration.
Between these two cranes, Remayser also erected a Linden Comansa LC1060 crane, with freestanding height of 69 meters. As the new building gains in height, this crane will be tied to the structure and will be jacked-up to a final height under hook of 97 meters.