Stone



__What are stones? __  Stones are elements composed of one or more minerals and originate as a final result of different geological processes.

__How many kinds of stone do you know? __
 * Metamorphic
 * Sedimentary
 *  Igneous

__What characteristics do stones have? __ The principal characteristic are: Are Hardness, Are composed of different materials and Contains chemicals

__Why are stones used in construction? __ Rocks can be used to:
 * Garnish
 * Create a Font
 * Create the arches of the doors
 * For paving
 * For garnish and create floors

**Stone**

** Stones are the main material used in architecture when this material is available in the construction place. ** Stones have different advantages such as durability, adaptability to sculptural treatment and it is naturally used. But stones have many disadvantages like weakness in tension, expensive and unstable with load pushing at angles. Stonework can be divided into two ways, when working with roughly broken stones bounded in mortar which is called rubble **(the simplest and cheapest)**, and when working with regularly cut blocks which is ashlar-masonry **(strongest and most suitable)**, for example, entablatures. Bonding is another form to work with stones, **and the best form is that in which blocks are placed so that the vertical joints in one course are not about the joints in the course above and below.**

** To finish, stones can be used into different ways, to provide monolithic supports and beams, and in some styles stone slabs are employed even for roofing. Although it has generally been replaced as a structural material by cheaper and more efficient manufactured products, it is still widely used as a surface veneer for its practical and expressive qualities. ** media type="file" key="Sin título (3).wma"