Structural reliability according to Eurocodes in serviceability limit state

The current study aims to investigate the reliability for serviceability design for flexural members made of different materials (steel, concrete and timber) according to the specifications of the current versions of Eurocodes. Second-order reliability method is applied to determine the reliability index for different design situations for simply supported beams subjected to bending. The characteristic, the frequent and the quasi-permanent combination of actions has been investigated and compared. The differences in service reliability for different materials have been discussed.