Building material is any material used for construction purpose. A wide range of building materials are available for construction of buildings. Proper selection of materials for a particular building can influence the original cost, maintenance, ease of cleaning, durability and appearance. So, one of the most important tasks of anyone constructing any unit is selecting the the most suitable material for a given building structure. Many natural substances are often used as building material. These include, but are not limited to soil, wood, rocks, clay even leaves. Many other synthetically produced substances are also used for construction of buildings.