When assembled and joined, form a complete frame. Although a wide range of section shapes and sizes are produced, the designer may find that the required section size is not available. In this case, built-up girders may be fabricated from plate. Sections and plate girders may also be strengthened by stiffening the web or flanges depending upon the load to be carried. Features:Built-up girders fabricated from plateCorrect gaugingAccurate working envelope