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= Stones =

==== Stones are natural materials **used for building since the Stone** **Age.** They're characterized by their durability and adaptability to sculptural treatment. But working with them has also many disadvantages like the lack of stability with load pushing at angles; difficulty to quary, transport and cut ; weakness in tension and expensiveness. ====

==== The job of molding or cutting the stones for construction is called stonework. When stones are broken in a mortar they are called ´´rubble´´, and when they are cut regularly, **usually like rectangles**, they get the name of ´´ashlar-masonry´´. ====

==== **The stones' strength made possible constructions like the egypcian temples, because they can be used like columns ** **or monoliths, but nowadays there are other materials (cheaper and more efficient) used for structural purposes; however the stone has great expressive qualities, so it is perfect for buildings' facades and decorative purposes.**====

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