The Pre -Engineered Steel Building System is a building enclosure system that always includes a structural system and often includes roof and wall cladding. The general idea of the system is represented in the above diagram. The structural system consists of rigid frames that are fabricated from plate steel through a manufacturing process. These rigid frames consist of rafters/roof beams and columns. These frames span can be extended without intermediate supporting columns. The frames are spaced at intervals between similar/variable distances.

The Pre -Engineered Steel Building System is important because it very economically allows for the creation of large column -free enclosures. The best applications for the Pre -Engineered Steel Building System include industrial applications such as complex industrial facilities, warehouses and distribution centers. The system is also used in retail stores, shopping centers, hotels, auto dealerships, office complexes, airplane hangars, sports and entertainment arenas as well as schools, libraries, medical facilities and government buildings.

There are those who still believe that steel buildings are selected from a catalog of standard designs based on the size of the building. In fact the buildings are custom -engineered to specific dimensions, structural criteria and materials in accordance with local building codes. The Pre -Engineered Steel Building System has evolved over the years into assemblages of structural elements that work together to provide a very efficient system. Each part of the system is designed to precisely fit together which transforms into buildings that can be built with greater speed and accuracy than is possible using conventional methods. Addi- tionally, systems construction offers significant cost and performance advantages over conventional construction methods including lower life cycle costs for greater ROI (return on investment), unlimited design flexibility and sustainability attributes such as 100% recycled steel.