- A building has two basic parts that are mentioned below.
Substructure
Superstructure
- sub- structure or foundations is lower potion of building. It is located below ground surface level.Main building transmitted the load of the substructure and it is transmitted on soil. A foundation is therefore that part of the structure which is in direct contract with the ground to which the loads are transmitted.
- Super - Structure is that part of the structure which is above ground surface level. It serves the purpose of its intended use.A part of the super structure , located between ground level and floor level is called plinth level.
- Plinth is defined as the portion of the structure between the surface of surrounding ground and surface of the floor, above the ground.The floor level is usually known as the plinth level. A building has the following components :
- Foundations.
- Masonry units : walls and columns.
- Floor structure.
- Door , window and other openings.
- Vertical transportation structure , such as stairs,lifts,ramps etc..
- Building finishes
Stones The stones also used for masonry should be hard , durable , tough , and sound , free from weathering , defects like cavities , cracks , sand holes , injurious veins , patches of loose or soft materials etc. The stones should be obtained only from approved quarry.The stone should be obtained by quarrying large massive rock and not by breaking small size.Boulders having rounded faces. Rocks from which building stones are obtained , are divided into three groups : 1- Igneous rock 2- Sedimentary rocks 3- Metamorphic rocks 1- Igneous rock It has been formed by agency of heat , the molten material subsequently become soli ified.The cheif building used in steps , facing work , walls etc.However , it is unsuitable for carving work.It is more suitable for heavy engineering works such as docks , break waters, light houses , masonry bridges and piers. 2- Sedimentary rocks It has been formed chiefly through the agency of water.Most of these have been derived fro
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