Saturday, 13 October 2018

Statue of Liberty

Statue of Liberty



  • Statue of Liberty
  • Liberty Enlightening the World
Statue of Liberty 7.jpg
LocationLiberty Island
Manhattan, New York City,
New York,[1] U.S.
Coordinates40°41′21″N 74°2′40″WCoordinates40°41′21″N 74°2′40″W
Height
  • Height of copper statue (to torch): 151 feet 1 inch (46 meters)
  • From ground level to torch: 305 feet 1 inch (93 meters)
DedicatedOctober 28, 1886
Restored1938, 1984–1986, 2011–2012
SculptorFrédéric Auguste Bartholdi
Visitors3.2 million (in 2009)[2]
Governing bodyU.S. National Park Service
WebsiteStatue of Liberty National Monument

Construction in France

The statue's head on exhibit at the Paris World's Fair, 1878
On his return to Paris in 1877, Bartholdi concentrated on completing the head, which was exhibited at the 1878 Paris World's Fair. Fundraising continued, with models of the statue put on sale. Tickets to view the construction activity at the Gaget, Gauthier & Co. workshop were also offered.[50] The French government authorized a lottery; among the prizes were valuable silver plate and a terracotta model of the statue. By the end of 1879, about 250,000 francs had been raised.[51]
The head and arm had been built with assistance from Viollet-le-Duc, who fell ill in 1879. He soon died, leaving no indication of how he intended to transition from the copper skin to his proposed masonry pier.[52]The following year, Bartholdi was able to obtain the services of the innovative designer and builder Gustave Eiffel.[50] Eiffel and his structural engineer, Maurice Koechlin, decided to abandon the pier and instead build an iron truss tower. Eiffel opted not to use a completely rigid structure, which would force stresses to accumulate in the skin and lead eventually to cracking. A secondary skeleton was attached to the center pylon, then, to enable the statue to move slightly in the winds of New York Harbor and as the metal expanded on hot summer days, he loosely connected the support structure to the skin using flat iron bars[28] which culminated in a mesh of metal straps, known as "saddles", that were riveted to the skin, providing firm support. In a labor-intensive process, each saddle had to be crafted individually.[53][54] To prevent galvanic corrosion between the copper skin and the iron support structure, Eiffel insulated the skin with asbestos impregnated with shellac.[55]
Eiffel's design made the statue one of the earliest examples of curtain wallconstruction, in which the exterior of the structure is not load bearing, but is instead supported by an interior framework. He included two interior spiral staircases, to make it easier for visitors to reach the observation point in the crown.[56] Access to an observation platform surrounding the torch was also provided, but the narrowness of the arm allowed for only a single ladder, 40 feet (12 m) long.[57] As the pylon tower arose, Eiffel and Bartholdi coordinated their work carefully so that completed segments of skin would fit exactly on the support structure.[58] The components of the pylon tower were built in the Eiffel factory in the nearby Parisian suburb of Levallois-Perret.[59]
The change in structural material from masonry to iron allowed Bartholdi to change his plans for the statue's assembly. He had originally expected to assemble the skin on-site as the masonry pier was built; instead he decided to build the statue in France and have it disassembled and transported to the United States for reassembly in place on Bedloe's Island.[60]
In a symbolic act, the first rivet placed into the skin, fixing a copper plate onto the statue's big toe, was driven by United States Ambassador to France Levi P. Morton.[61] The skin was not, however, crafted in exact sequence from low to high; work proceeded on a number of segments simultaneously in a manner often confusing to visitors.[62] Some work was performed by contractors—one of the fingers was made to Bartholdi's exacting specifications by a coppersmith in the southern French town of Montauban.[63] By 1882, the statue was complete up to the waist, an event Barthodi celebrated by inviting reporters to lunch on a platform built within the statue.[64] Laboulaye died in 1883. He was succeeded as chairman of the French committee by Ferdinand de Lesseps, builder of the Suez Canal. The completed statue was formally presented to Ambassador Morton at a ceremony in Paris on July 4, 1884, and de Lesseps announced that the French government had agreed to pay for its transport to New York.[65] The statue remained intact in Paris pending sufficient progress on the pedestal; by January 1885, this had occurred and the statue was disassembled and crated for its ocean voyage.[66]
Richard Morris Hunt's pedestal under construction in June 1885
The committees in the United States faced great difficulties in obtaining funds for the construction of the pedestal. The Panic of 1873 had led to an economic depression that persisted through much of the decade. The Liberty statue project was not the only such undertaking that had difficulty raising money: construction of the obelisk later known as the Washington Monumentsometimes stalled for years; it would ultimately take over three-and-a-half decades to complete.[67] There was criticism both of Bartholdi's statue and of the fact that the gift required Americans to foot the bill for the pedestal. In the years following the Civil War, most Americans preferred realistic artworks depicting heroes and events from the nation's history, rather than allegorical works like the Liberty statue.[67] There was also a feeling that Americans should design American public works—the selection of Italian-born Constantino Brumidi to decorate the Capitol had provoked intense criticism, even though he was a naturalized U.S. citizen.[68] Harper's Weekly declared its wish that "M. Bartholdi and our French cousins had 'gone the whole figure' while they were about it, and given us statue and pedestal at once."[69] The New York Times stated that "no true patriot can countenance any such expenditures for bronze females in the present state of our finances."[70] Faced with these criticisms, the American committees took little action for several years.[70]

Design

Frank Leslie's Illustrated Newspaper, June 1885, showing (clockwise from left) woodcuts of the completed statue in Paris, Bartholdi, and the statue's interior structure
The foundation of Bartholdi's statue was to be laid inside Fort Wood, a disused army base on Bedloe's Island constructed between 1807 and 1811. Since 1823, it had rarely been used, though during the Civil War, it had served as a recruiting station.[71]The fortifications of the structure were in the shape of an eleven-point star. The statue's foundation and pedestal were aligned so that it would face southeast, greeting ships entering the harbor from the Atlantic Ocean.[72] In 1881, the New York committee commissioned Richard Morris Hunt to design the pedestal. Within months, Hunt submitted a detailed plan, indicating that he expected construction to take about nine months.[73] He proposed a pedestal 114 feet (35 m) in height; faced with money problems, the committee reduced that to 89 feet (27 m).[74]
Hunt's pedestal design contains elements of classical architecture, including Doricportals, as well as some elements influenced by Aztec architecture.[28] The large mass is fragmented with architectural detail, in order to focus attention on the statue.[74] In form, it is a truncated pyramid, 62 feet (19 m) square at the base and 39.4 feet (12.0 m) at the top. The four sides are identical in appearance. Above the door on each side, there are ten disks upon which Bartholdi proposed to place the coats of arms of the states (between 1876 and 1889, there were 38 U.S. states), although this was not done. Above that, a balcony was placed on each side, framed by pillars. Bartholdi placed an observation platform near the top of the pedestal, above which the statue itself rises.[75] According to author Louis Auchincloss, the pedestal "craggily evokes the power of an ancient Europe over which rises the dominating figure of the Statue of Liberty".[74] The committee hired former army General Charles Pomeroy Stone to oversee the construction work.[76] Construction on the 15-foot-deep (4.6 m) foundation began in 1883, and the pedestal's cornerstone was laid in 1884.[73] In Hunt's original conception, the pedestal was to have been made of solid granite. Financial concerns again forced him to revise his plans; the final design called for poured concrete walls, up to 20 feet (6.1 m) thick, faced with granite blocks.[77][78] This Stony Creek granite came from the Beattie Quarry in Branford, Connecticut.[79] The concrete mass was the largest poured to that time.[78]
Norwegian immigrant civil engineer Joachim Goschen Giæver designed the structural framework for the Statue of Liberty. His work involved design computations, detailed fabrication and construction drawings, and oversight of construction. In completing his engineering for the statue's frame, Giæver worked from drawings and sketches produced by Gustave Eiffel.

Eiffel Tower

Eiffel Tower


Tour Eiffel Wikimedia Commons (cropped).jpg
Seen from the Champ de Mars

Record height
Tallest in the world from 1889 to 1930[I]
General information
TypeObservation tower
Broadcasting tower
Location7th arrondissementParis, France
Coordinates48°51′29.6″N2°17′40.2″E
Construction started28 January 1887
Completed15 March 1889
Opening31 March 1889 (129 years ago)
OwnerCity of ParisFrance
ManagementSociété d'Exploitation de la Tour Eiffel (SETE)
Height
Architectural300 m (984 ft)[1]
Tip324 m (1,063 ft)[1]
Top floor276 m (906 ft)[1]
Technical details
Floor count3[2]
Lifts/elevators8[2]
Design and construction
ArchitectStephen Sauvestre
Structural engineerMaurice Koechlin
Émile Nouguier
Main contractorCompagnie des Etablissements Eiffel

Construction

Foundations of the Eiffel Tower
Work on the foundations started on 28 January 1887.[15] Those for the east and south legs were straightforward, with each leg resting on four 2 m (6.6 ft) concrete slabs, one for each of the principal girders of each leg. The west and north legs, being closer to the river Seine, were more complicated: each slab needed two pilesinstalled by using compressed-air caissons15 m (49 ft) long and 6 m (20 ft) in diameter driven to a depth of 22 m (72 ft)[16] to support the concrete slabs, which were 6 m (20 ft) thick. Each of these slabs supported a block of limestone with an inclined top to bear a supporting shoe for the ironwork.
Each shoe was anchored to the stonework by a pair of bolts 10 cm (4 in) in diameter and 7.5 m (25 ft) long. The foundations were completed on 30 June, and the erection of the ironwork began. The visible work on-site was complemented by the enormous amount of exacting preparatory work that took place behind the scenes: the drawing office produced 1,700 general drawings and 3,629 detailed drawings of the 18,038 different parts needed.[17] The task of drawing the components was complicated by the complex angles involved in the design and the degree of precision required: the position of rivet holes was specified to within 0.1 mm (0.0039 in) and angles worked out to one second of arc. The finished components, some already riveted together into sub-assemblies, arrived on horse-drawn carts from a factory in the nearby Parisian suburb of Levallois-Perret and were first bolted together, with the bolts being replaced with rivets as construction progressed. No drilling or shaping was done on site: if any part did not fit, it was sent back to the factory for alteration. In all, 18,038 pieces were joined together using 2.5 million rivets.[15]
At first the legs were constructed as cantilevers, but about halfway to the first level, construction was paused in order to create a substantial timber scaffold. This renewed concerns about the structural integrity of the tower, and sensational headlines such as "Eiffel Suicide!" and "Gustave Eiffel Has Gone Mad: He Has Been Confined in an Asylum" appeared in the tabloid press.[18] At this stage, a small "creeper" crane designed to move up the tower was installed in each leg. They made use of the guides for the lifts which were to be fitted in the four legs. The critical stage of joining the legs at the first level was completed by the end of March 1888.[15] Although the metalwork had been prepared with the utmost attention to detail, provision had been made to carry out small adjustments in order to precisely align the legs; hydraulic jacks were fitted to the shoes at the base of each leg, capable of exerting a force of 800 tonnes, and the legs were intentionally constructed at a slightly steeper angle than necessary, being supported by sandboxes on the scaffold. Although construction involved 300 on-site employees,[15] only one person died, due to Eiffel's safety precautions and the use of movable gangways, guardrails and screens.

Design

Material

The Eiffel Tower from below
The puddled iron (wrought iron) of the Eiffel Tower weighs 7,300 tons,[57] and the addition of lifts, shops and antennae have brought the total weight to approximately 10,100 tons.[58] As a demonstration of the economy of design, if the 7,300 tons of metal in the structure were melted down, it would fill the square base, 125 metres (410 ft) on each side, to a depth of only 6.25 cm (2.46 in) assuming the density of the metal to be 7.8 tons per cubic metre.[59] Additionally, a cubic box surrounding the tower (324 m x 125 m x 125 m) would contain 6,200 tons of air, weighing almost as much as the iron itself. Depending on the ambient temperature, the top of the tower may shift away from the sun by up to 18 cm (7 in) due to thermal expansion of the metal on the side facing the sun.[60]

Wind considerations

When it was built, many were shocked by the tower's daring form. Eiffel was accused of trying to create something artistic with no regard to the principles of engineering. However, Eiffel and his team – experienced bridge builders – understood the importance of wind forces, and knew that if they were going to build the tallest structure in the world, they had to be sure it could withstand them. In an interview with the newspaper Le Temps published on 14 February 1887, Eiffel said:
Is it not true that the very conditions which give strength also conform to the hidden rules of harmony? … Now to what phenomenon did I have to give primary concern in designing the Tower? It was wind resistance. Well then! I hold that the curvature of the monument's four outer edges, which is as mathematical calculation dictated it should be … will give a great impression of strength and beauty, for it will reveal to the eyes of the observer the boldness of the design as a whole.[61]
He used graphical methods to determine the strength of the tower and empirical evidence to account for the effects of wind, rather than a mathematical formula. Close examination of the tower reveals a basically exponential shape.[62] All parts of the tower were over-designed to ensure maximum resistance to wind forces. The top half was even assumed to have no gaps in the latticework.[63] In the years since it was completed, engineers have put forward various mathematical hypotheses in an attempt to explain the success of the design. The most recent, devised in 2004 after letters sent by Eiffel to the French Society of Civil Engineers in 1885 were translated into English, is described as a non-linear integral equation based on counteracting the wind pressure on any point of the tower with the tension between the construction elements at that point.[62]
The Eiffel Tower sways by up to 9 centimetres (3.5 in) in the wind.[64]

Accommodation

Gustave Eiffel's apartment
When originally built, the first level contained three restaurants—one French, one Russian and one Flemish—and an "Anglo-American Bar". After the exposition closed, the Flemish restaurant was converted to a 250-seat theatre. A promenade 2.6-metre (8 ft 6 in) wide ran around the outside of the first level. At the top, there were laboratories for various experiments, and a small apartment reserved for Gustave Eiffel to entertain guests, which is now open to the public, complete with period decorations and lifelike mannequins of Eiffel and some of his notable guests.[65]
In May 2016, an apartment was created on the first level to accommodate four competition winners during the UEFA Euro 2016 football tournament in Paris in June. The apartment has a kitchen, two bedrooms, a lounge, and views of Paris landmarks including the Seine, the Sacre Coeur, and the Arc de Triomphe.[66]

Passenger lifts

The arrangement of the lifts has been changed several times during the tower's history. Given the elasticity of the cables and the time taken to align the cars with the landings, each lift, in normal service, takes an average of 8 minutes and 50 seconds to do the round trip, spending an average of 1 minute and 15 seconds at each level. The average journey time between levels is 1 minute. The original hydraulic mechanism is on public display in a small museum at the base of the east and west legs. Because the mechanism requires frequent lubrication and maintenance, public access is often restricted. The rope mechanism of the north tower can be seen as visitors exit the lift.

TAJ MAHAL

As you can imagine, the Taj Mahal required a lot of people for its manufacture. The specialists of each profession were called to work on a site that brings together the peak of its activities up to 20,000 people. It was started in 1631. 17 years later, in 1648, the mausoleum hand was completed. The complete site was completed in 1653, 5 years later, the years that were used to build the enclosure, the ancillary buildings, and especially the gardens.

The style

The architecture of the Taj Mahal is clearly Indo-Islamic. It is a style combining Hindu art, traditional in this territory, and Islamic, this religion has been conveyed so far. The mixture of the two allowed a reinterpretation of the many Hindu traditions in an Islamic form that dominated the region since the time of the Delhi Sultanate (1192 - 1451). Subsequently the Mughal Empire took over and Indo-Islamic art took various forms depending on the political climate of the time. Thus with the first emperor Bâbur this style was little used, while under Akbar, it was greatly. The territory, historically populated by non-Muslims, delivered a workforce that was not used to Islamic style. However, it was under the direction of Muslim artists that they were built, hence these intertwined vegetation, this work of lapidary marquetry and the dome of lotus which is the flagship of Taj Mahal, synthesis of Islamic art and Hindu.

Origin of materials

Contrary to popular belief, the Taj Mahal's mausoleum is not made of marble, it is only covered. Indeed, the walls of the monument are red brick, made on site for obvious reasons of transport. It seems that these bricks have also been used for scaffolding, but it is not certain because at the time we used a lot of bamboo or even wood, to make these scaffolding.
The huge white marbles were made in Makrana, southwest of Jaipur, about four hundred kilometers away. To transport them the stonecutters had to rent trolleys whose expenses were charged to the royal treasury. The logs were cut with great precision, without any cracks.
The builders used different types of marble, which came from different regions and countries: Rajasthan, Punjab, China, Tibet, Afghanistan, Sri Lanka, and even the Arabian Peninsula were stone exporting centers.
Three types of stones were used in the construction of the Taj Mahal, they are indicated below by their local names.
The construction of the Taj Mahal involved the use of semi-precious stones such as Aqiq, Yemenite, Firoza, Lajward, Moonga, Sulaimani, Lahsania, Tamra, Yashab and Pitunia which were used for incrustations; rare and unusual stones such as Tilai, Pai-Zahar, Ajuba, Shelter, Khattu, Nakhod and Maknatis which were used in marquetry, for the famous pietra dura, for floors, and turrets and common stones Sang-i-Gwaliori (by will, gray and yellow).
Sang-i-Surkh (red sandstone), Sang-i-Musa (black marble) and Sang-i-Rukham (white marble) were used for foundations and masonry and as exterior facades. The red wish comes from Fatehpur Sikri, nearby, from Tantpur and Paharpur. White marble was purchased in Makrana, Rajasthan and was paid for, as shown in the three contracts exhibited in the museum's.

The location

The Taj Mahal had to be on the edge of the Yamunâ for several reasons. First of all, water is one of the 4 rivers of Paradise according to the Koran, so it is logical that a tomb is near a river. Then the Yamuna, which crosses Agrâ, is a tributary of the Ganges, the purifying river of the Hindu religion, so by placing the deceased here, her soul will naturally be purified for the Hindu people on whom reigned Shah Jahan. Finally this area of the city, in the East, was the place where, in the seventeenth century, all the gardens and palaces of the notables Mughals, it was It was therefore quite logical that the Empress's grave should be here.
Initially the land on which the Taj Mahal was built belonged to Raja Jai Singh. He agreed to give it to the Emperor for four houses in the city center. We do not know if the market was interesting for the seller, but a priori, yes.

The foundations

Foundations were the biggest technical challenge facing the Mughal builders. In order to support the considerable load resulting from the mausoleum, the sand of the bank had to be stabilized. To this end, wells were dug, then cased in wood and finally filled with rubble, iron and mortar, thus acting as piles. Once the construction of the terrace was completed, work began on the rest of the complex at the same time.
The trees were planted almost immediately to allow them to grow as the work progressed.

The construction

Once the foundations were made, the walls of the mausoleum as well as the mosque, the guest house and the door were built. They are red, a stone made of compressed sand that can be of great strength. The bricks were sealed with mortar, in a very classic way. To climb on the highest parts the workers used scaffolding, probably bamboos, but also bricks, the latter serving both to help the building and the construction itself. This technique of elevation by brick scaffolding is however questionable, it is more likely that they were made of bamboo.

Decorative works

The work of incrustation of stone decorations required a highly qualified workforce. These specialists in lapidary marquetry were Mogul who had been trained in inlay techniques by Italian craftsmen employed at the Emperor's court. There is an Italian influence in floral details partially representing European medicinal plants. These plants were considered as paradisiac vegetation, hence their presence on the mausoleum, but also on the mosque and the pavilion of the guests. To achieve them the craftsmen have used forty different type of stones, all of them precious and semi-precious.

Floral patterns in the Taj Mahal

Calligraphic inscriptions

Since the use of human or animal images is strictly forbidden in Islamic traditions, other styles of decoration have to be used. There were floral decorations, many, but also a lot of calligraphic inscriptions. As one might expect, it is mostly verses from the Quran that have been written. They are found inside and outside the Mausoleum. The talented Persian Abd-ul-Haqq, who gets the title of "Amanat Khan" for his work, created the calligraphic decorations of the Taj Mahal. It was he who made these inscriptions on the tomb of Shah Jahan's grandfather, Akbar, on the orders of his father Jahangir. He was, therefore, a person well known to local artisans, and it was only natural that he was called upon to build the Taj Mahal. He was the only one authorized to sign his works on the Taj Mahal, which allows us to obtain valuable information.
It is these dated signatures that make it possible to have a common thread of advanced work. We can see that the calligraphic works started from the top down. In 1937 the caligraphic work was almost finished. The calligrapher Amanat was rewarded for his work by an increase in his salary and an elephant, which was far from negligible at the time. He died in 1647 or 1648, after completing the inscriptions on the main door, on which is inscribed his last signature: "Finished With his help, the Most High, 1057". This anachronistic date is explained by the fact that it counted in lunar year.

Calligraphic inscriptions


Cost of the construction

How much did it cost to build the Taj Mahal? This is a question that is not so difficult to answer because the work was the subject of a transaction between the site manager and the craftsmen from all over to work on it. Thanks to these lists, of Persian origin, we have an idea of the cost of Taj Mahal. It is a little over 41,848,426 Rupees.
In fact, the funds for the construction of the Taj Mahal were provided by the Royal Treasury of the Emperor and the Treasury of the Government of the Province of Agra (subah Akbarabad) and the accounts were scrupulously kept by Lala Rudra Das. The main sources of expenditure were the cost of stones and wages paid to the workers. Stock and labor, there is nothing so modern since ...
Cost of each part of the complex has been calculated separately, for example the cost of the marble base (chhakka) with the 4 minarets is given to 5 177,674 rupees, that of the main tomb is 5,345,361 Rupees. The famous balustrade which surrounds the two cenotaphs cost 468 855 Rupees. About 50 sources of expenditure have been made and the total cost of building the Taj Mahal is RUB 41,848,426. He was paid 466.55 kg of gold from the royal treasury.

Dimensions about the Taj Mahal



The Taj Mahal is a site much larger than we think, the fault of the mausoleum, so well known that we hide the rest of the site, which is as much worth the look as this marble masterpiece that is the grave itself. The site is 580 x 305m, it is divided into 3 parts, An entry to the South, the gardens in the center and the mausoleum in the North, as it says in the description of the Taj Mahal.
The white marble mausoleum, the best known of the site's buildings, is an octagon, in fact a square with truncated angles. It measures 58.60m of side for a total height of 73m. It is placed on a base also in marble of 95,16m. Each minaret is 43m high. The dome, it is 17.70m in diameter for a height of the  arc of 24.4m. It is lined inside by another dome necessarily smaller, which is still 35m high from the ground.

The mosque is 60m long and 30 wide, as is the guest pavilion, symmetrical. The mosque-mausoleum-guest house complex is based on a platform 300m long by 100 wide, it is raised 7m from the gardens.
The gardens form a square of 300m side, cut in four straight channels These channels are 120m long (they are a little shorter than half of the garden to make room for the central fountain) and 6m wide. The central fountain draws a rectangle of 40m wide for a square aquatic space of only 10m side, the rest being the passage. Each of the 4 garden portions is itself cut into 4, forming lawn squares of 60m side. If the central part, close to the North-South canal, is a beautiful lawn, near the walls it is more vegetation high.
The inner courtyard is a little larger than the terrace, it measures 300m long and 140m wide. In the center the courtyard itself is 40m x 40m, it is reached by two paths of 120m long (East and West), or 30m only (from the South) the main gate is 50m long by 30 wide.
Here is a table summarizing the dimensions of the Taj Mahal.

Dimensions of the initial site (*)896,10 x 300,84 m
Dimensions of the actual site561,20 x 300,84 m
Dimensions of the Taj Ganji (*)334,90 x 300,84 m
Dimensions of the inner courtyard165,10 x 165,23 m
Dimensions of the great gate41,20 x 34 m
Height of the great gate23,07 m
Dimensions of the gardens296,31 x 296,31 m
Dimensions of the terrace300 x 111,89 m
Height of the terrace8,70 m
Dimensions of the mausoleum56,9 x 56,9 m
Height of the mausoleum67,97 m
Diameter of a minaret5,65 m
Height of a minaret43,02 m
Dimensions of the mosque56,60 x 23,38 m
Height of the mosque20,30 m