Problem

Refurbishing of the rooftops, structure and roofing of the building classified as a historic monument.

Solution

Tubesca-Comabi preferred an innovative solution that had already been tested on another work site. An umbrella structure safely assembled on the ground and lifted by crane to be anchored to a free-standing scaffolding.

Major particularity:

• A structure, self-stable at 8.50 m at the last anchorage point, and raised to a height of 22 m, had to be created.
• Two 3m cantilever doors to accommodate the umbrella. Covered area 1000m², 25 m high at the ridge.
• Umbrella dimensions 50 x 20 m.

This work was planned to be carried out in 4 stages over 3 years from 2013 to 2016. There was 4,000m² of structure for each section.