A futuristic simulation of Notre Dame to power its real-world resurrection

virtual Notre Dame

Livio De Luca,  research director at France’s National Center for Scientific Research, and his allies across French research labs and the Scientists of Notre Dame, have tapped the revolutions in digital mapping, visualization software, virtual reality and cloud computing to create a fantastical “virtual twin” of Notre Dame.

Donning VR goggles, scholars and sculptors, architects and coders can all meet and expand on this interactive simulation, reconstructing the cathedral virtually before each step is repeated in real-world Paris.

https://www.domusweb.it/en/architecture/2021/04/08/a-futuristic-simulation-of-notre-dame-to-power-its-real-world-resurrection.html

15 or 20 years might be needed for Notre Dame’s restoration

Notre Dame fire
Photo: Thibault Camus

The Rector Patrick Chauvet of Notre Dame said Friday the 2nd April 2020 that the burned-out Paris cathedral and its esplanade could remain a building site for another “15 or 20 years. I can guarantee that there’s work to do!”

Works planned include remodelling the cathedral’s esplanade, which before the blaze was visited every year by 20 million tourists.

https://www.weau.com/2021/04/02/notre-dames-rector-15-or-20-years-needed-for-cathedrals-restoration/

Notre Dame holds an Easter event

Inside Notre Dame
Photo: Christophe Ena
Notre Dame rector Patrick Chauvet, second right, stands as part of the Maundy Thursday ceremony, while cellist Marina Chiche, left, performs in Notre Dame Cathedral, Thursday, April 1st, 2021.

A holy Thursday service in Paris was held at Notre Dame cathedral, which is still under construction after it was ravaged by flames just days before Easter in 2019, its spire crumbling in a shocking blaze.

The ceremony involved a foot-washing ritual that symbolizes Jesus’ willingness to serve. Six worshippers were chosen for the foot washing, a diverse group including medical staff, the needy and some people who are set to be baptized this Easter.

https://www.usnews.com/news/world/articles/2021-04-01/holy-thursday-service-held-at-fire-ravaged-notre-dame

French oaks from once-royal forest felled

Notre Dame exterior
Photo: Christian Hartmann

French oaks that have been standing for hundreds of years in a once-royal forest now have a sacred destiny. Felled March 2021 in the Loire region’s Forest of Bercé, they have been selected to reconstruct Notre Dame Cathedral’s fallen spire.

The 93-metre spire, made of wood and clad in lead, became the most potent symbol of the April 2019 blaze when it was seen engulfed in flames, collapsing dramatically into the inferno.

https://www.theguardian.com/world/2021/mar/09/french-oaks-from-once-royal-forest-felled-to-rebuild-notre-dame-spire

The first oaks selected

Notre Dame exterior
Photo: AP
In this Sunday, April 21, 2019 file photo, workers fix a net to cover one of the iconic stained glass windows of the Notre Dame Cathedral in Paris

The first eight oak trees destined to replace the destroyed spire of Paris’ scorched Notre Dame cathedral have been selected from the Bercé forest in the French Loire region, church officials said on Friday.

“It is a source of pride for the foresters of the National Forestry Office to participate in the rebirth of Notre-Dame de Paris,” said Forestry Office Director Bertrand Munch.

https://www.usnews.com/news/world/articles/2021-03-05/first-oak-trees-selected-to-replace-notre-dames-spire

Perhaps oak is not the answer?

The Notre Dame fire
Photo: Wikipedia

Sandra Plantier, an associate professor of secondary education in geography at the National Higher Institute of Teaching and Education, says that tree harvesting is archaic, and that replacing the former structure with oak trees as opposed to a modern, sustainable alternative could even end in the same result.

“Making the deliberate choice to cut down a thousand hundred-year-old trees to reconstruct the spire of the cathedral and its framework can only appear as a blindness to reality, or, worse, as an inability to draw lessons from the current situation,” she says in a column for Reporterre.

“These thousand trees, one or several hundred years old, are as many cathedrals for the biodiversity of our forests that we are getting ready, for the first, to cut down at the very beginning of spring, even though they will nest there probably already birds and squirrels.”

https://www.architectureanddesign.com.au/news/notre-dame-rebuild-faces-its-greatest-challenge#

France on hunt for centuries-old oaks for Notre Dame

Truss
Photo: AP

Work to restore the cathedral is not expected to begin until the beginning of 2022. Carpentry experts say rebuilding Notre Dame as it was will take 2,000 metres squared of wood, requiring about 1,500 oaks to be cut down. The cathedral’s roof contained so many wooden beams it was called la forêt (the forest). The roof’s support included 25 triangular structures 10 metres high and 14 metres across at the base, placed over the stone vaults of the nave.

https://www.theguardian.com/world/2021/feb/16/france-centuries-old-oaks-rebuild-spire-notre-dame-fire-trees

Search for suitable stones for Notre Dame

Notre Dame exterior
Photo: Gao Jing
Notre Dame is seen at the submerged bank of Seine River after continuous rainfalls in Paris

Geologists are studying about ten quarries north of Paris to find the same limestone as that mined for the cathedral underneath the French capital. That vast network of quarry tunnels beneath Paris was closed in the 18th century as collapsing galleries created dangerous sinkholes in streets and fields around the city.

Workers need new stone to rebuild collapsed parts of the vault and replace blocks in the gables over the three main entrances and other sections high up the side walls that were weakened by the fire.

Experts have been carefully testing the strength of surviving stones with everything from radar beams to simple mason’s hammers. Some stones that fell from the vault can be reused, but others have lost their inner solidity.

https://www.thetablet.co.uk/news/13834/french-experts-search-for-suitable-stones-for-notre-dame

Reinforcing the vaults of Notre Dame

beams

At the end of January 2021, fifty-two wooden support vaults left the Le Bras workshop for Paris, for the purpose of reinforcing each of the five stone vaults of the cathedral that were weakened or damaged, or sometimes gutted by the collapse of the spire during the fire of April 15th, 2019.

Assembly at the cathedral will begin in February 2021, thirty meters above the void: the supports will have been previously mounted under the vaults using hydraulic jacks.

https://fsspx.news/en/news-events/news/notre-dame-de-paris-enters-final-phase-securing-vault-63902

If you’re doing a concert on New Year’s eve…

Jean-Michel-Jarre

Why not do it in a virtual Notre Dame?

On New Year’s Eve, electronic veteran Jean-Michel Jarre returned for a highly unique digital concert. Titled “Welcome To The Other Side,” the performance was filmed in a French studio but broadcast live in virtual reality (VR) inside a digital rendering of the Notre Dame de Paris Cathedral. Viewers could either tune in using VR or watch the set as a video on any device.

Of the medium, Jarre said,

“Virtual reality is to the performing arts today what cinema was to the theatre in its early days, a kind of curiosity. I believe that VR will become tomorrow, a mode of expression in its own right.”
Watch it here now.