The Cathedral of Notre Dame in Paris is "very unstable" and "winds over 90 km / h can tear down the walls of the structure, which were weakened by the fire of 15 April."
Paolo Vannucci of the University of Versailles says that the walls of the cathedral could withstand wind speeds of up to 220 kilometers per hour before the fire. Now there is a danger that the walls will collapse at wind speeds of only 90 kilometers per hour, and it is urgently necessary to reinforce the entire structure of the monument.
"At the same time, the stones supporting the cathedral were weakened by fire and water used in combat," Vannucci said.
The cathedral is still threatened by the gallons of water and molten lead that accumulate on the roof, which in turn plays a significant role in the stability of the monument.
"Strengthening and restoring the structural system of Notre Dame as a whole should therefore be the main goal in rebuilding the monument," the newspaper reported. What's the use?
"This reinforcement will take longer than originally planned" after French President Emmanuel Macron announced that he would complete the rebuilding of Notre Dame in just five years.
In order to replace the roof, the walls must be reinforced and the vaults rebuilt.
According to Paolo Vannucci, the reconstruction of the gothic cathedral requires an integrated design of the entire structure and not the fragmentation or individual reconstruction of the different parts of the monument.
It is therefore up to the Paris executive to decide whether the restoration project will be presented to French institutions or whether a competition will open for the recruitment of foreign architects.
On May 1
The fire that consumed part of Notre Dame was accidental and began at the end of the afternoon of April 15 in the area of the monument under construction.
The central tower collapsed and 2/3 of the roof collapsed. Some of the wealthiest families in France and large business groups have contributed to the creation of a restoration fund under the care of the French government, which now totals 850 million euros.
Notre Dame Cathedral is one of the most visited monuments in the world. The construction lasted between 1163 and 1345 200 years.