Welded steel fabricated Pre Engineered Buildings are used as temporary space for workshops, car parking area, accommodation space for onsite workers and so on. Main structure of such buildings is made of welded H section steel. These are supported by other accessories like Z or C section channel purlin, sandwich panel made wall cladding and corrugated steel sheet fabricated roof. Apart from these, Pre Engineered Buildings also comprise of color steel sheet made roof gutter, angle steel made knee brace and welding H section steel made beam and column. Usually, aluminum window and sandwich panel insulated sliding doors are used for such structures.