This article is a continuation of the series of articles by the authors about the characteristic defects and damage to the building structures of industrial buildings. In earlier articles, there were descriptions of defects in ground foundations, damage to foundations, as well as arti-cles about damage to reinforced concrete columns and facades. The article presents a sys-tematization of defects and damage to metal columns of industrial buildings, based on the analysis of the results of the survey of many objects. The possible consequences of the de-velopment of the identified defects and damages are described. Recommendations for the assessment of the technical condition of damaged structures and recommendations for the elimination of identified defects and damage are given. The unique damages associated with the operation of lifting and transport equipment, road and rail transport are also given. The article concludes with an analysis of the characteristic zones of defect formation in the met-al columns of buildings for the created automated system for monitoring the state of indus-trial facilities.