Stone

Stones are pieces of rock made of concentrated minerals. Some kinds of stones are marble, granite, slate, and limestone. Stones are solid objects, heavy, and vary in color and texture. They normally are very rough and some look like compounded crystals. They are useful in constructions in certain cases. It has long been recognized as a material of great durability and superior artistic quality, the leading choice for buildings associated with status, power and religion. Have you ever wondered what stones are made out of? Or why they are used for certain constructions? If you are an architect you should know certain things about it. Like I said before, stones are parts of rocks made of compounded minerals. They have certain advantages and disadvantages like any other material. They can last a very long time, **they are adaptable to sculptural treatment and they can be used in its natural state.** **They resist deformation more than any other bonding material.** On the contrary, they are difficult to cut and transport due to its weight and its hardness. **They also weaken with tension** and in certain cases if you push at a certain angle, they may crumble or fall apart. It also isn’t an economical choice. You can build structures out of stone. The shaping, preparation, or setting of stones is called stonework. There are two types of stonework: Rubble and Ashlar-Masonry. Rubble is when roughly broken stones are bound in mortar. On the other hand, Ashlar-Masonry is stone that is cut in blocks. Lastly, stones don't bond, they are individual objects that when put together in certain ways, can make a good and sturdy structure.

@http://vocaroo.com/?media=v158jrNSimDTy6v9O&recipient=mariannemasp@yahoo.com