The stool is a wooden frame on which the future spire of the cathedral will rest.
With extraordinary dimensions - 15 meters long, 13 meters wide, 6 meters high - it will rest on the four pillars of the crossing of the transept, in order to form the base of the spire.
150 complex assemblies
It is he who will determine the stability of a structure culminating at 96 meters from the ground.
Made up of 110 parts and 150 complex assemblies, it was first assembled “dry” in the Le Bras Frères workshops.
Nearly forty carpenters from the company, and others from Cruard Charpentes (Mayenne), Asselin (Deux-Sèvres) and MDB (Calvados), worked on the pieces of wood and carried out this first test.
Usually competitors, these four companies have come together in a consortium, as the work is immense and its geometry complex.
The pieces must fit together to the nearest millimeter, otherwise the rest of the building, already fragile, will move.
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The timber of the two diagonal beams, measuring 20 meters…
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