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Obelisco de Buenos Aires

Obelisco de Buenos Aires is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Obelisco de Buenos Aires rather than just read about it. In short: The Obelisco de Buenos Aires (Obelisk of Buenos Aires) is a national historic monument and icon of Buenos Aires. Located in the Plaza de la República in the intersection of avenues Corrientes and 9 de Julio, the reinforced concrete structure was erected in 1936 to commemorate the quadricentennial of the first foundation of the city.

Obelisco de Buenos Aires — main illustration
Obelisco de Buenos Aires — illustration

Key takeaways

  • Obelisco de Buenos Aires belongs to engineering; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Obelisco de Buenos Aires to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Obelisco de Buenos Aires from memory before moving on to harder problems.

Reference excerpt

The Obelisco de Buenos Aires (Obelisk of Buenos Aires) is a national historic monument and icon of Buenos Aires. Located in the Plaza de la República in the intersection of avenues Corrientes and 9 de Julio, the reinforced concrete structure was erected in 1936 to commemorate the quadricentennial of the first foundation of the city.

History

Construction began on March 20, 1936, and it was finished on May 23 of the same year. It was designed by architect Alberto Prebisch (one of the main architects of the Argentine modernism who also designed the Teatro Gran Rex, in Corrientes and Suipacha) at the request of the mayor Mariano de Vedia y Mitre (appointed by president Agustín Pedro Justo). For its construction, which cost 200,000 pesos moneda nacional, 680 cubic meters (24,000 cu ft) of reinforced concrete and 1,360 square meters (14,600 sq ft) of Olaen white stone facing from Córdoba were used. The Egyptian-style obelisk was built by the German company G.E.O.P.E. - Siemens Bauunion - Grün & Bilfinger, which completed its work in only 31 days, using the labor of 157 workers. Rapid-hardening Incor cement was used and was built in 2 meters (6 ft 7 in) sections to facilitate the dumping of concrete. Its height is 67.5 metres (221 ft), and 63 metres (207 ft) of these are up to the initiation of the apex, which is 3.5 by 3.5 meters (11 by 11 ft). The tip is blunt, measuring 40 centimeters (16 in) and ends in a lightning rod that cannot be seen because of the height; its cables run through the interior of the obelisk. It has only one entrance (on its west side) and on its top there are four windows, that can only be reached by a straight staircase of 206 steps with 7 breaks every 6–8 meters (20–26 ft). On February 20, 1938, Roberto María Ortiz succeeded Justo as president and appointed Arturo Goyeneche as the new mayor of the city. In June 1939, the city council sanctioned the demolition of the Obelisco, citing economic, aesthetic and public safety reasons. However, the ordinance was vetoed by the municipal executive power, characterizing it as an act without merit and juridical content, because it alters the state of things emanated by the executive power, and that it was a monument under the jurisdiction and custody of the Nation and is part of its heritage. Where the Obelisk stands, there was a church dedicated to St. Nicholas of Bari; it was demolished. In that church the Argentine flag was officially hoisted for the first time in Buenos Aires, in 1812. That fact is noted in one of the inscriptions on the north side of the monument. As a result of the detachments of sheets of stone covering, which occurred on the night of June 20–21, 1938, the day after a public event with the presence of president Ortiz took place there. It was decided to remove such cladding in 1943 and was replaced by another one made of polished cement, making cracks to simulate the joints of the stones. When the slabs were removed, a legend that said "Its architect was Alberto Prebisch" was also removed. In 1973, it was decorated as a Christmas tree. In 1975, during the Peronist government of Isabel Perón, a ring-shaped, rotating sign encircled the obelisk with the revolving motto El silencio es salud ("Silence is health"). Putatively addressed to motorists who caused excessive noise, it was widely interpreted by Argentines as equating political acquiescence with safety from state terrorism and assassination. Throughout its history, the monument has suffered vandalism, especially politically oriented graffiti. In the 1980s, an activist group broke in and spilled paint from the top windows, causing the city government to erect a fence around its base in 1987. This move stirred controversy, but eventually proved effective in reducing the number of defacing incidents. On 1 November 2005 it was announced that a comprehensive restoration, financed by the Argentine painting and restoration industry association (Ceprara), was finished. The monument was painted with 90-micrometre acrylic paint to a "Paris stone" hue, deemed more pleasant than the previously used white. On December 1, 2005, the obelisk was covered by a giant pink condom to commemorate the World AIDS Day. To commemorate the 30th anniversary of the La Noche de los Lápices, the monument was converted into a giant pencil.

Lines B, C, and D of the Buenos Aires Metro have stations near the monument, and are connected by a number of underground passages with commercial galleries. The Obelisco hosted the opening ceremony of the 2018 Summer Youth Olympics.

Inscriptions on its sides

At the base of the south face, in a very small rectangle, this sonnet written by Baldomero Fernández Moreno during a tribute dinner in the Alvear Palace Hotel to Prebisch:

El Obelisco ¿Donde tenía la ciudad guardada esta espada de plata refulgente desenvainada repentinamente y a los cielos azules asestada? Ahora puede lanzarse la mirada harta de andar rastrera y penitente piedra arriba hacia el Sol omnipotente y descender espiritualizada. Rayo de luna o desgarrón de viento en símbolo cuajado y monumento índice, surtidor, llama, palmera. La estrella arriba y la centella abajo, que la idea, el ensueño y el trabajo giren a tus pies, devanadera. English version:

The Obelisk Where did the city keep this shining silver sword [that was] suddenly unsheathed and into the blue skies thrusted? Now you may take a look [it] tired of walking low and penitent stone up towards the omnipotent Sun and descend spiritualized. Moonbeam or wind tear in immobile symbol and monument index, fountain, flame, palm tree. The star above and the spark below, that the idea, the dream and the work [may] turn at your feet, winder.

Special occasions

See also

Obelisk of São Paulo Washington Monument

References

https://web.archive.org/web/20100603194157/http://otrosmovil.clarin.com/ciudades/capital_federal/Luces-colores-cambian-entorno-Obelisco_0_271772976.html https://web.archive.org/web/20110706083419/http://bsas.gov.ar/areas/med_ambiente/obelisco_01.php

External links

(in Spanish) Article on restoration Archived 2020-03-14 at the Wayback Machine Google Maps

Illustrations

Obelisco de Buenos Aires illustration
Obelisco de Buenos Aires: Under construction
Under construction
Obelisco de Buenos Aires: Aerial view of the Obelisco in 2018
Aerial view of the Obelisco in 2018
Obelisco de Buenos Aires: Obelisco de Buenos Aires and 9 de Julio Avenue
Obelisco de Buenos Aires and 9 de Julio Avenue
Obelisco de Buenos Aires: Top of the Obelisk of Buenos Aires
Top of the Obelisk of Buenos Aires

Worked examples

Example 1 — a first encounter with Obelisco de Buenos Aires

Start with the simplest possible case. Write down what Obelisco de Buenos Aires claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Obelisco de Buenos Aires before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Obelisco de Buenos Aires ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Obelisco de Buenos Aires

In research
Obelisco de Buenos Aires appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Obelisco de Buenos Aires in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Obelisco de Buenos Aires is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1936 establishments in Argentina, Buildings and structures completed in 1936, Monuments and memorials in Buenos Aires, so understanding it makes those chapters shorter.
In everyday life
Look for Obelisco de Buenos Aires outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Obelisco de Buenos Aires in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Obelisco de Buenos Aires means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Obelisco de Buenos Aires out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Obelisco de Buenos Aires in simple terms?

The Obelisco de Buenos Aires (Obelisk of Buenos Aires) is a national historic monument and icon of Buenos Aires. Located in the Plaza de la República in the intersection of avenues Corrientes and 9 de Julio, the reinforced concrete structure was erected in 1936 to commemorate the quadricentennial o…

Why does Obelisco de Buenos Aires matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Obelisco de Buenos Aires?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Obelisco de Buenos Aires.

Tags

  • 1936 establishments in Argentina
  • Buildings and structures completed in 1936
  • Monuments and memorials in Buenos Aires
  • National Historic Monuments of Argentina
  • Obelisks in Argentina
  • San Nicolás, Buenos Aires
  • Terminating vistas
  • Tourist attractions in Buenos Aires

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