This Master thesis was about calculation and design of supporting steel bar structure multi storey administrative building. Steel structure with rotation symmetric floor plan has sixteen storey. Maximal size of building is 100x100m. Structural design report is made by a combination of manual calculations and calculations using software RFEM by Dlubal. Structural design report includes calculations of secondary beam, primary beam, column, bracing, purin, truss girder and others part of structure with their connections. Thesis includes drawing documentation and report.

Industrial hall with storage outbuilding. The length of the hall is 72 meters and width of 30 meters. The main hall has a span 24 meters and the outbuilding has a span 6m. The distance between primary steel frame is 6 meters. The height of the main hall is 10.7 meters and a height of outbuilding is 13.0 metres. The roof is flat with roof slope of 3.5% the main hall and 8.75% outbuilding. The structural system of the hall's bar structure. Primary steel frame is designed as a steel frame rafter with eaves haunch. In the roof structure are designed purlins. The stability of the structure is secured by roof braces and longitudinal braces. The hall is pin-supported on the foundation pad. The hall is clad wall and roof panels PUR. Main hall is equipped with a bridge crane with capacity of 8 tons.