Iron+and+Steel



** Iron & Steel **

Check the interactive materials lab, and take notes on the characteristics of these materials on your wiki.

Cast Iron: Is made with iron without carbon (It’s cheaper and has more weight) this material it's easily broken if you stretch it... I t's weaker than steel on tension; But has a great resistance to compression and is easy to molds to any shape. The cast iron can be use in arch bridges, cannons and domes.

Steel: Is made with iron plus a little amount of carbon. Is the strongest material in compression and tension. The steel is excellent for make beams and columns in skyscrapers. However the steel loses strength in extremely high temperatures because then it turns flexible.



 Corrugated iron : Corrugated galvanized iron, commonly abbreviated CGI, is a building material composed of sheets of hot-dip galvanized mild steel cold-rolled to have a linear corrugated pattern in them. The corrugations increase the bending strength of the sheet in the direction parallel to the corrugations, but not across them
 * What corrugated iron is **


 * Characteristics ** 

It proved to be light, strong, corrosion-resistant, and easily transported, and particularly lent itself to prefabricated structures and improvisation by semi-skilled workers. For roofing purposes, the sheets are laid somewhat like tiles, with a lateral overlap of two or three corrugations, and a vertical overlap of about 150 mm, to provide for waterproofing. CGI is also a common construction material for industrial buildings throughout the world


 * history of iron & steel as construction materials **

 Corrugated iron has been extremely popular in Australia because is cheap, easily transportable and replaces more expensive materials, one man can easily arise a corrugated iron roof on a house. Corrugated iron has become an icon in Australia, symbolizing Australian’s architecture. 1850, corrugated iron houses were transported from England. Within a few years they can be found everywhere on the cities and were transported to the interior. Since then, corrugated iron becomes important on farms for build mills and barns. It’s still use today on farms in great compounds. Many farm fences were constructed of corrugated iron. There are many corrugated iron houses that survive 100 years old and are occupied today, other laid abandoned. There still many corrugated structures, all around Australia. Corrugated iron had unusual uses, like the constructions of churches. The corrugated iron had a big impact on industry. Most of the towns have corrugated irons structures like hotel and industrial buildings. Many people around the world use the corrugated iron because his cheap cost. There other uses for the corrugated iron like telegraphs station. Until the First World War, most corrugate iron had imported from England. As from this war, Australia begging to manufacture his own corrugated iron. At the 1930’s the Broken Hill Property produce a huge amount of corrugate iron. Modern artist and sculptures use corrugated iron as a symbol of Australia. Today, the corrugated iron has chance to corrugate steel. Most of the Australian roof are made whit corrugate steel.

** What it takes to be an iron worker ** To be and iron worker, they have to be in a good physical condition and a great strength, have no afraid to highs or suffer for dizziness. Ability, balance and good eye are essentials to this work.

after listen the podcast!
 * Reading Activity.**

//"The old cast iron buildings died out. I'm not really sure whether the new skyscrapers killed them, or the new esthetics"//

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Maybe they aren't dead maybe they are just forgotten. The world has changed, there are new thoughts, now the architecture is based on the social needs more than the impression of the building itself, so I think that the old cast iron buildings, are not dead are kind inspiration forms over the new tendencies. I mean, the boom of cast iron were in the 20th century with the modern age and most of the people we call "fathers of architecture" built their masters jobs in that age and their projects are inspiration for the architects that were after them or even ourselves when we graduate someday... ======

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My conclusion is that they aren't dead, just that their concept change through time and then has ended like it is consider now, like a very strong material used in the structure part. ======




 * The Paragraph**

Words: Lintel - Entablature - Column - Expenditure - Dome

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Is the architecture present in the Greek period, before the conquest of Alexander (Rome) at difference between the barbarians, Egyptians, and the Babylonians, the Greek edifications were planned according the "life on earth" and not thinking in the next life or in the heaven and stars, the Greeks thought that the life is here and right now, they didn’t think in one living after death so, their temples were about the life right here about the sun and the lights, for example the Athens Acropolis different with the roman architecture (which absorbed the Greek one) the Greek architecture doesn't has arches and domes. In the Athens Acropolis is placed the Parthenon (a temple dedicated to the Goddess Athena) the structure of this temple is the Doric order characterized by the design of the entablature over the columns, the entablature that works as a lintel has representation of 4 important battles to the ancient Greek society. The temple was made of white marble stone, a work that supposed to be expensive to the people but nice at the goddess eyes. ======  