Conservation measures The alarm was sounded in June 1993 after a riveting element detached from a height of almost thirty-five metres during the Design, miroir du siècle exhibition. The Minister of Culture,
Jacques Toubon, decided to "temporarily" close the site in November of that year, due to the danger of new rivets falling on the public. The installation of nets hung under the glass roof and the calling in of experts to remedy the situation were not enough to keep the building open to the public. Only the
Galeries nationales and the
Palais de la Découverte are once again available to the public, following the necessary safety work. The use of the nave was interrupted for twelve years. Six years during which the Ministry of Culture and Paris City Council were unable to agree on the division of responsibilities for saving the Grand Palais, which continued to deteriorate. This procrastination is linked not only to the relocation and rehousing of the administrations occupying the premises, but also to the substantial sums required for its restoration and upkeep. Faced with pressure from private investors strongly interested in such a location in the heart of Paris, the building was protected as a
historic monument in 2000 on the occasion of the centenary of the 1900
Universal Exhibition.
Pathologies The behaviour of masonry and steelwork is influenced by several factors : The building's foundations, partly made of oak piles supporting stone or lime concrete foundations, are subject to variations and a gradual lowering of the water table. Due to successive campaigns of redevelopment work on the road and the quayside along the Seine, this phenomenon causes the heads of the posts to wash out and then rot when they come into contact with the oxygen in the air. The first cracks appeared, as water infiltration through the glass roof caused the metal to slowly corrode. Another cause of decay is the hanging directly on the metal structure, as part of imposing decorations or exhibitions such as the ''Salon de l'Aéronautique'', where balloons and airplanes are sometimes presented suspended. This causes premature aging of many metal elements.
Restoration project The restoration work was managed between 2001 and 2007 by the Department of Architecture and Heritage (DAPA) of the Ministry of Culture and Communication. The contracting authority was awarded to the
Public Establishment for the Management of Cultural Works (ÉMOC). The work was carried out in two phases: - Phase One (November 2001 – August 2004) : Underpinning of part of the foundations, accompanied by the removal, restoration, and replacement, from 2001 to 2004, of the two repoussé copper quadrigae and their Récipon iron reinforcement. - Phase Two (2002 to the end of 2007) : Repair of the walls and other cracked masonry, the glass roof, and deformed or dilapidated roofs, with, since 2005, renovation of the facades, restoration of the large exterior mosaic frieze, and a second and final phase of foundation consolidation. The budget for this project was 101.36 million euros (including 72.3 for the first phase). Funding was provided by the French government through the Ministry of Culture.
A short history of "Réséda" green Even before the first renovation work on the nave of the Grand Palais began, the question of what color to give to the metal structure quickly arose, and whether it was even possible to restore it to its original state. As time took its toll, numerous layers of paint covered all the elements. The color visible in 2001 was close to gray. The search for the original product based on the initial results. Luck is on the cards, as the manufacturer who supplied the paint in 1900 is still in business. This is the
Ripolin company, which still has archives from the period in question. The corresponding color chart is quickly found, and the name of the color used is revealed: a "
Réséda" green, of which there are three shades : pale, medium, and dark. The previous analyses clearly indicate the use of "pale reseda green." == See also ==