Iron+&+Steel

= Characteristics of Materials =


 * ===**__ Wood __** ** : **Their characteristics are: is cheap, lightweight and moderately strong in compression and tension. Its applications are in bridges, houses, two to three story buildings and roller coasters. ===


 * ===**__ Plastic __** **: **Their characteristics are: is flexible, lightweight, long-lasting and strong in compression and tension. Its applications are in umbrellas, inflatable roofs over sports arenas. ===


 * ===**__ Aluminium __** **: ** Their characteristics are: lightweight, doesn’t rust and strong in compression and tension. Its applications are in airplane wings, boats, cars and skyscraper “skin”. ===


 * ===**__ Brick __**** : ** Their characteristics are: is cheap and strong in compression. Its applications are in walls of early skyscrapers and tunnels, dome. ===


 * ===**__ Concrete __** **: **Their characteristics are: is cheap, fireproof and weatherproof, molds to any shape and strong in compression. Its applications are early bridges and domes. ===


 * ===**__ Reinforced Concrete __** **: **Their characteristic are: is low cost, fireproof and weatherproof, molds to any shape and strong in compression and tension. Its applications are in bridges, dams, beams and columns in skyscrapers. ===


 * ===<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">**__ Cast Iron __** <span style="color: #008000; font-family: 'Comic Sans MS',cursive;">**<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">: **Their characteristics are: is molds to any shape and strong in compression. Its applications are in arch bridges, cannons and historic domes. ===


 * ===<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">**__ Steel __**** : ** <span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Their characteristics are: is one strongest materials used in constructions and strong in compression and tension. Its applications are in cables in suspension bridges, trusses, beams and columns in skyscrapers and roller coasters. ===

=<span style="background-color: #008080; color: #ffff00; display: block; font-family: 'Comic Sans MS',cursive; text-align: center;">** Corrugated Iron (CGI) in Australia ** =




 * 1) ===**<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">What corrugated iron is? **===


 * 1) ===**<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">Characteristics **===

===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">These iron bars have ridges or corrugation that improve adherence to concrete, is equipped with a high ductility, which allows the time to cut and bend not damaged, all these operations to be more secure and reduced energy expenditure. ===

===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">CGI was invented in the 1820s in Britain by Henry Palmer, architect and engineer to the London Dock Company. It proved to be light, strong, corrosion-resistant, and easily transported, and particularly lent itself to prefabricated structures and improvisation by semi-skilled workers. It soon became a common construction material in rural areas in the United States, Chile, New Zealand and Australia and later India, and in Australia and Chile In Australia and New Zealand particularly it has become part of the cultural identity, and fashionable architectural use has become common. CGI is also a common construction material for industrial buildings throughout the world. also became (and remains) the most common roofing material even in urban areas. ===
 * 1) ===**<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">Uses through history **===

===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Wrought iron CGI was gradually replaced by mild steel from around the 1890s, and iron CGI is no longer obtainable - however, the common name has not been changed. ===

=**<span style="background-color: #008080; color: #ffff00; display: block; font-family: 'Comic Sans MS',cursive; text-align: center;">Steel & Iron Workers **=



<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">**What it takes to be an iron worker?**
===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">An iron worker is a tradesman who works in the ironworking industry. Iron workers also unload, place and tie reinforcing steel bars (rebar) as well as install post-tensioning systems, both of which give strength to the concrete used in piers, footings, slabs, buildings and bridges. Ironworkers load, unload, place and set machinery and equipment and operate power hoists, forklifts, and aerial lifts. Ironworkers perform all types of industrial maintenance as well. ===

<span style="color: #008000; font-family: 'Comic Sans MS',cursive;"> To be an iron worker only needs:

 * ===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Good physical condition - The materials used for ironworking are heavy and bulky so above average physical strength is necessary. ===


 * ===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Agility and a good sense of balance are also required. ===

<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">Post-Reading
===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Today, innovations in construction materials have allowed man to go beyond their limits. Iron is one of those new elements used in construction. Its use has improved the technique in the construction of buildings, especially those who are skyscrapers. But no one can speak of a building that killed the other, as there is a story in terms of evolution for materials and the type of building to be built (the new building: Skyscrapers). This implies a better use of the material, ie, apply to the new form of aesthetics that requires the design of the building today. ===



<span style="background-color: #008080; color: #ffff00; font-family: 'Comic Sans MS',cursive;">Podcast Iron & Steel
===<span style="color: #008000; font-family: 'Comic Sans MS',cursive;">Iron and steel are elements of innovative and alternative building for the manufacture of a stable structure. These allowed to be used in conjunction with concrete to erect large buildings of considerable height. Also these elements of construction can be adapted to any type of form that requires the design of the building. They are also easy to operate in a structure for then use them as a decorative method. ===