A pre-engineered building is a metal building that consists of light gauge metal standing seam roof
panels on steel purling spanning between rigid frames with light gauge metal wall cladding. In other words, it has a much greater vertical and horizontal deflection. Pre-engineered buildings are generally low-rise buildings, which are ideal for offices, houses, showrooms, shop fronts etc. Time being the most important aspect, pre-fabricated steel structures are built in very short periods of time. Pre-engineered buildings are nothing but steel buildings in which excess steel is avoided by tapering the sections as per the bending moment’s requirement.