Brandskydd av stålkonstruktioner : Lathund för brandskyddsdimensionering av stålprofiler

Sammanfattning: This bachelor thesis covers fire protection methods of structural steel and the aim is to develop an information tool designed for inexperienced structural engineers. The information tool covers basic fire protection methods and the general way to produce a fire resistance for structural steel. The layout of this information tool is a simple folder that contains information about the most important steps when producing fire protection for a steel structure. The thesis starts with a general overview of the fire protection needed in buildings to fulfill national legislative and regulatory requirements. To get an understanding of how steel components behave during the influence of fire, a brief overview is presented of the material properties of steel. This chapter also contains a review of previous research in the area. Furthermore, some of the most common fire protection materials are introduced and the general way of producing a safe fire protection for steel components is explained. For example, the chapter handles topics such as critical steel temperature, section factor and degree of utilization, which are key factors for designing fire protection for structural steel components. To evaluate the information tool, experienced structural engineers have been interviewed with a given interview guide to assist the making of this tool. The results from the interviews provided an insight into the needs for information regarding fire protection for structural engineers.