Kranverleih Haslach GmbH has successfully completed the installation of several prestressed concrete trusses, each weighing just under 100 tonnes, for the construction of a new hall at the Getzner textile factory. This complex operation, executed in the Austrian town of Bludenz, required months of meticulous planning due to the challenging conditions of the site, including a limited footprint and a full cellar running underneath the hall.
The task involved installing ten massive concrete trusses for the hall’s roof, each weighing 98 tonnes and spanning 47.3 meters. The presence of the cellar posed a significant obstacle, as the hall floor’s support load was limited. Despite these constraints, factory operations at Getzner had to continue uninterrupted.
Tobias Haslach, owner of Kranverleih Haslach GmbH, reflected on the intricate planning and detailed calculations necessary to ensure the project’s success. “We collaborated closely with other companies involved, stabilizing the cellar ceiling with ceiling supports to achieve the required strength. This allowed our LTM 1300-6.3 crane to work on the site,” said Haslach.
The team utilized a 6-axle mobile crane, the Liebherr LTM 1300-6.3, to lift the heavy trusses. To handle the complex task of unloading the trusses onto the hall floor, a second crane, the LTM 1230-5.1, was employed. Positioned outside the hall on a specially filled embankment, the 5-axle crane worked in tandem with the LTM 1300-6.3.
The restricted space and positioning behind a concrete wall meant that communication between the teams was conducted via radiotelephony. “Both cranes worked at their maximum capacity during the tandem hoist, lifting 51 tonnes each with radii of 13 and 15 meters, respectively,” Haslach added. Two trusses were successfully installed each day, with each requiring a special permit for night transport due to their sheer size and weight.
After each installation, the cranes, along with their ballast and equipment, were repositioned for the next lift. “The collaboration on-site was exceptional,” Haslach noted, praising the coordination among all involved. Despite the challenges, operations at the Getzner factory proceeded without disruption, much to the satisfaction of the crane operators and the rest of the team.
Kranverleih Haslach GmbH, a family-run company based in Wertach, southern Germany, specializes in heavy-lift operations and relies exclusively on Liebherr for its fleet of nine mobile cranes.
