CONSTRUCTION of building units bonded together with mortar. The building units (commonly known as masonry units) may be stones, bricks or precast blocks of concrete.When stones are used as the building units or building blocks that is known as stone masonry.Similarly, in brick masonry, bricks are used as the building units.A composite masonry is a construction in more than one type of building units. Masonry WORK is one of the major building crafts and one of the oldest.Masonry is NORMALLY used for the construction of foundations, walls, columns and other similar structural components of buildings.The basic advantage of masonry construction lies in the fact that in load – bearing structures, it performs a variety of functions such as supporting loads, subdividing SPACE, providing thermal and acoustic insulation, affording FIRE and weather protection etc., which in a framed structure has to be provided separately.In stone masonry, the stones are placed in position such that the natural bedding plane normal to the direction of pressure they carry.