The research group Structures in Civil Engineerign is active in the fields of structural and geotechnical engineering. Research activities include experimental and numerical analysis as well as advanced symbol approach for solving problems of structural mechanics. The most important results in the period from 1999 to 2003 are: - Development of analytica methods for the analysis of gravel piles and analysis of soft structural soil, improved with gravel piles. - Development of numerical methods for nonlinear analysis of framed structures with composite cross-sections and frames under fire conditions. - Development of the first analytical method for the determination of the rotation capacity of moment connectons in steel structures. - Development of methods for the numerical simulation of damage accumulation in steel structures based on the damage mechanics approach. - Derivation of a very detailed cost objective function for the optimum analysis of steel frame structures.