Home \ International \ Liebherr L1 fast-erecting crane at work inside Passau Cathedral
Liebherr L1 fast-erecting crane at work inside Passau Cathedral
12/01/2024
Pubblicato da Ettore Zanatta
Liebherr L1 fast-erecting crane at work inside Passau Cathedral.
The organ at St Stephan's Cathedral in Passau incorporates 17,974 pipes, making it the largest Catholic church organ in the world. Renovation work means that there is currently a special visitor at the church. A Liebherr L1-24 fast-erecting crane has been given the honoured task of carefully moving the organ pipes, which weigh several hundred kilograms.
The Liebherr fast-erecting crane is slowly manoeuvred into place inside Passau Cathedral and then assembled. It is surrounded by scaffolding that reaches up to the gallery. Precision work part two: the crane, now fully assembled, has an organ pipe on its hook. The metres-long pipe is carefully lifted from its mount and lowered into the nave. This unusual visitor to Passau Cathedral is playing its part in the ongoing renovation of the organ and its pipes up in the gallery. The pipes are being removed one by one, restored, and then fitted back into place.
A great deal of planning was needed before the crane could actually be assembled. The Liebherr Tower Crane Solutions project department, which is responsible for large-scale and special project planning and consultancy, worked closely with Liebherr dealer Beutlhauser on this. Space restrictions resulting from scaffolding inside the cathedral impacted the crane's assembly curve. Several test assemblies at Beutlhauser's premises in Passau supported this meticulous advance planning. The ground's load-bearing capacity and protection of the cathedral's marble floor during the crane's assembly and operation also had to be clarified beforehand. Ground samples were taken for this purpose, the floor was then covered with anti-slip mats and iron plates for better load distribution before assembly. Four 800-kilogram plates were put down, one for each foot of the crane.
Meanwhile, the L1 was on its way to the site. This required extra precision as well, as the cathedral square there can only be reached via narrow streets. A one-way street in Passau’s Old Town district was the only viable route to the destination – and this involved a police escort for driving against the direction of traffic. Once at the cathedral square, it was time to change the towing vehicle. The cathedral entrance was too narrow for the truck, so an industrial forklift truck from Beutlhauser's own hire fleet was used to transport the crane its final few metres. The Linde X50 electric forklift truck also met the requirement of working emission-free inside the cathedral. Once there, the manoeuvring continued past numerous pillars and pews. 13 rows of pews were dismantled in advance for the crane's intended position.
The largest organ pipe in Passau Cathedral is over 11 metres long and weighs 306 kilograms. The pipes are made of a delicate tin-lead alloy, a very soft material. This means that lifting the pipes has to be done with great care. The cathedral will remain open to visitors during the renovation work; the only exceptions being the crane's assembly and dismantling. The L1 is expected to remain in place until February 2024. It will then be used a second time once the restoration work is complete, when the organ pipes are lifted back up to the gallery and reinserted. If everything goes according to plan, the project should be finished in 2027.
The flexibility of the fast-erecting crane proved to be the decisive factor when deciding on its use. Scaffolding with an overhead crane and trolley, as initially planned, would have needed to stay in place for several years until the renovation work's completion, which would have resulted in long-term restrictions and ongoing costs. The L1-24 is able to use its strengths to full effect in Passau. Its compact slewing radius of 1.95 metres enables it to be set up inside the cathedral. Tight turning radii are no problem thanks to its wheel gauge, and its supports can be optimally adapted to conditions on site. Radio remote control and scaling via a programmable logic controller make assembly and dismantling easy. The L1-24 can achieve a maximum radius of 27 metres and is able to lift up to 2,500 kilograms. It can still lift 950 kilograms at its jib head, depending on the radius used. Three different jib positions are possible for operation.
Ultime notizie di Liebherr Italia
Lifting
22/04/2024
Liebherr is part of the largest construction project in Greenland's history
Around 250 kilometres north of the Arctic Circle, Liebherr i...
Lifting
15/04/2024
Liebherr tower cranes renovate bridge in Spain
Two Liebherr 420 EC-H 16 Litronic cranes are secured to the...
Lifting
08/04/2024
150-tonne lifting capacity: Liebherr expands its telescopic crawler crane line-up with the LTR 1150
Liebherr has expanded its range of telescopic crawler cranes...
Lifting
11/03/2024
Expertise and Liebherr power in a two-pack
Liebherr LTM 1650-8.1 and LTM 1450-8.1 from MSG Krandienst a...
Lifting
09/01/2024
Riga Mainz replaces old railway bridge with Liebherr crawler crane LR 1750/2
Riga Mainz utilized a Liebherr LR 1750/2 crawler crane to re...
Lifting
22/12/2023
Liebherr tower crane works on unusual bridge construction
– Liebherr’s Tower Crane Solutions project department is pro...
Altri International
International
26/04/2024
Digitalisation and sustainability at the Wirtgen Group's "Technology Days"
Digitalisation and sustainability were the focal points of t...
International
26/04/2024
SVAB launches the successor to the popoular joystick Grip L8
At this year’s edition of Intermat in Paris on April 24-27,...
International
25/04/2024
Genuine parts ensure articulated hauler quality and uptime
The importance of good quality, reliable parts when maintain...
International
25/04/2024
Steil takes delivery of new Tadano AC 6.300-1 all terrain crane
Steil takes delivery of new Tadano AC 6.300-1 all terrain cr...
International
24/04/2024
New Palfinger's TEC Heavy-Duty Cranes Set Standards in Power & Precision
The new Palfinger PK 1350 TEC and PK 1650 TEC heavy-duty cra...
International
24/04/2024
SSAB and Manitou Group agree on fossil-free steel
Manitou Group announces the signature of a letter of intent...