Adekma's Liebherr MK 140 Mobile Construction Crane Lifting on 773 year old Cathedral Restoration Project – Heavy Lift News
25 Jun 2024

Adekma’s Liebherr MK 140 Mobile Construction Crane Lifting on 773 year old Cathedral Restoration Project

In the western French city of Angers, the roof of the nave at has been secured with protective measures while restoration work is carried out. With Limited workspace on this historic building a Liebherr MK 140 mobile construction crane was instrumental in performing the necessary lifting operations.

Construction of the Gothic-style cathedral was completed around 1250 and 773 years later, in October 2023, extensive restoration work was scheduled for the church roof which is expected to last 14 months. An umbrella-type protection has been erected over the 30m high roof. The 10 elements were lifted by the French company Adekma on behalf of Entrepose using a Liebherr MK 140 mobile construction crane, which was successfully positioned next to the church, despite the limited space in the historic city centre.



The elements used each measure 25m long, up to 3m wide, and weigh up to 2t. They were assembled at a significant height after being lifted to protect the church roof. The nave is 48m long and 16.4m wide.



The mobile construction crane operated at a distance of 42.5m, a hook height of up to 30m, and luffed positions of 30° and 45°. Throughout the task, the maximum lifting capacities were utilised across the entire load curve. Due to its manoeuvrability, compact design, and boom length, the crane was able to cover the entire roof area from a single location while remaining close to the building. The steep jib positions ensured the appropriate working height and necessary load capacity. The height adjustable operator’s cab provided the crane operator with an optimal view of the loading area and the cathedral roof.



Saint Maurice Cathedral impresses visitors with a dome vault over 24m high and stained glass windows from the 12th, 13th, and 15th centuries. The building is listed among France’s preserved historical monuments.






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