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Careful selection of environmentally sustainable building materials is the easiest way for architects to begin incorporating sustainable design principles in buildings. Traditionally, price has been the foremost consideration when comparing similar materials or materials designated for the same function.


Because of their malleability and relative ease of working, copper and lead became synonymous with the complexities of Gothic architecture. Endowed with the rich green patina of age, weathered copper spires and roofs still enliven the skylines of northern European cities. Improved techniques of pre-patination can now bestow an instant, uniform illusion of maturity; Jean Nouvel's new cultural centre in Lucerne (p38) is crowned by a vast, overhanging roof clad in sheets of prepatinated copper. Sheltering a new urban square in its oversailing embrace, the emerald green structure forms a powerful horizontal datum in the lakeside landscape
Metals have useful properties such as tensile strength, ductility, hardness, electrical conductivity, and high melting points. They are widely used for electrical and structural applications. Understanding the physical and chemical properties of metals allows for improved technological advances. Since metals are so widely used in today's modern world, corrosion is all around us and affects our lives in many ways. Corrosion has many serious consequences to our society such as, economic, health, safety, technological, and cultural.
Cast iron played a pre-eminent role in the industrial development of our country during the 19th century.. ...
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