Conventional steel buildings are traditional metal structures constructed by hot-rolled steel sections which are designed individually and fabricated. Primary steel members are selected from international standard hot-rolled sections, such as but not limited to “UB”, “UC” and “PFC” (British Specifications), “HE” and “IPE” (EU Specifications) and “JIS” (Japanese Specifications).

Components of conventional steel buildings come in standard shapes and sizes with limited modifications permitted. These components are ordered from the steel mills (hot-rolled sections) according to unique specifications and are generally ordered based on project requirements.