Английская Википедия:Halle aux blés (Paris)

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Шаблон:Infobox building The Halle aux blés (Wheats Exchange or Grains Exchange) was a circular building in central Paris used by grain traders built in 1763–1767, with an open-air interior court that was capped by a wooden dome in 1783, then by an iron dome in 1811. In a major reconstruction in 1888–1889 much of the structure was replaced and the building became the Bourse de commerce.

The structure influenced the design of public buildings in Britain and the United States.

History

The city of Paris purchased the site of the former Hôtel de Soissons in 1755.Шаблон:Sfn The hôtel had been demolished and its materials sold, but the Medici column was left standing.Шаблон:Sfn On 23 November 1762 King Louis XV of France (1710–1774) declared that a hall of grain and flour (halle aux blés et farines) would be built on the site.Шаблон:Sfn Construction of the hall began in 1763 following a design by Nicolas Le Camus de Mézières (1721–89), who supervised the work. The circular hall surrounding a circular courtyard was completed in 1767.Шаблон:Sfn Six roads radiated from the Rue Viarmes, which ran around the hall.Шаблон:Sfn

Work on a wooden dome to cover the courtyard began on 10 September 1782 and was completed on 31 January 1783.Шаблон:Sfn The wooden dome was destroyed by fire in 1802. An imperial decree of 4 September 1807 stated that the hall was to be covered by a dome with cast-iron vertical arches covered in tinned copper. The replacement was complete in 1811.Шаблон:Sfn The building, now made entirely of stone, brick, iron and copper, was considered fireproof.Шаблон:Sfn In 1854 there was another fire in the building.Шаблон:Sfn

By the start of the Second French Empire (1852–70) the hall was no longer used to store flour.Шаблон:Sfn It was too small to serve the needs of the two million inhabitants of Paris and had become a sort of bourse, or exchange for titles to grain from Beauce, Brie and Picardy, and flour from the mills of Seine-et-Marne and Seine-et-Oise.Шаблон:Sfn The grain and flour was then delivered via rail direct from the provinces to the bakers and merchants.Шаблон:Sfn Fortunes were made and lost through speculation, not always honestly.Шаблон:Sfn The exchange was closed in 1873. In 1885 the building was assigned to the Commodities Exchange.Шаблон:Sfn

Structure

Файл:Vouteshalles.jpg
Vaulted attic of the exchange

The building was circular, with an exterior diameter of Шаблон:Convert, and enclosed a round court with a diameter of Шаблон:Convert. The building was pierced by 28 arcades on the ground floor, and the same number of windows on the floor above. The upper floor was reached by a double stairway, so that those going up one stairway would not meet those going down the other.Шаблон:Sfn Originally there was no roof over the central courtyard.Шаблон:Sfn

In 1782 François-Joseph Bélanger (1744–1818) proposed to add an iron cupola to cover the courtyard, but his plan was rejected. Instead, from 1782 to 1783 a laminated wood dome was built to a design by Jacques-Guillaume Legrand (1753–1807) and Jacques Molinos (1743–1831) based on the principles defined by Philibert de l'Orme (Шаблон:Circa–1570).Шаблон:Sfn The wooden dome was pierced by 25 large skylights.Шаблон:Sfn These took the form of continuous glass ribbons between the ribs of the dome. Even in dull and overcast weather they let in a considerable amount of light.Шаблон:Sfn The dome was almost Шаблон:Convert in circumference, and its summit was Шаблон:Convert above ground level.Шаблон:Sfn The interior of the rotunda was decorated with medallion portraits of Louis XVI, police lieutenant Jean-Charles-Pierre Lenoir (1732–1807) and Philibert Delorme, inventor of the technique used to make the dome.Шаблон:Sfn During the French Revolution (1789–99) the medallions of the king and Lenoir were destroyed in 1791.Шаблон:Sfn

On 16 October 1802 the cupola was destroyed by fire.Шаблон:Sfn The Minister of the Interior ran a competition for a replacement dome, and Bélanger resubmitted his design from 1782.Шаблон:Sfn In 1806 Jean-Baptiste Launay presented a model for a cast-iron dome for the market to the Exposition des produits de l'industrie française.Шаблон:Sfn On 17 January 1807 the Ministry of the Interior jury rejected Bélanger's design, which they considered to be in bad taste, and chose a more traditional design for a stone roof. However, under pressure from the Minister, the commission selected the iron dome on 20 August 1807.Шаблон:Sfn

Construction of the iron dome covered in sheets of copper began in 1809 and was completed in 1811. The engineer François Brunet assisted Bélanger in the calculations and design of the dome, which had a diameter of more than Шаблон:Convert. It was made of 51 sections, corresponding to the midpoints of the 25 arches of the rotunda, with each section made of two beams connected by spacers. The frame weighed 220 tons and the copper sheets weighed 29 tons.Шаблон:Sfn The 25 windows of the old cupola were replaced by a roof lantern that illuminated the dome.Шаблон:Sfn The lantern had a diameter of Шаблон:Convert.Шаблон:Sfn Victor Hugo mocked the dome on his 1831 novel Notre-Dame de Paris, calling it an English jockey-cap on a large scale.Шаблон:Sfn The copper sheets were replaced by glass in 1838.Шаблон:Sfn

Файл:Leeds Corn Exchange.jpg
Leeds Corn Exchange

Influence

When Thomas Jefferson (1743–1826) visited Paris he was highly impressed by the wooden dome, which he called the "most superb thing on earth". He proposed to copy the dome's design in three buildings in Washington, D.C. – the House chamber in the south wing of the Capitol, the White House and the Navy Yard dry dock.Шаблон:Sfn Latrobe was invited to Washington to take responsibility for the Capitol building as "surveyor of the public buildings". He proposed a variant of the Halle aux blés dome.Шаблон:Sfn The chamber would be roofed by a low-rising dome that would be hidden on the outside by the balustrade. After some delay, Jefferson accepted the modified design.Шаблон:Sfn

The interior of the Brighton Dome incorporates elements of the wooden dome's design. It was built for the future king George IV in (1803–08).Шаблон:Sfn The iron dome was copied in later buildings in England such as the London Coal Exchange (1846–49) by James Bunstone Bunning and the Leeds Corn Exchange (1861–63) by Cuthbert Brodrick.Шаблон:Sfn

Notes

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Sources

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