In
this paper there has been presented a selection of “in situ” tests’ results
carried out on the post-tensioned
prestressed roof girders KBOS-18 working as a
bearing elements in existing hall. The aim of those researches was
experimental verification of girder behaviour model in On the charts there have been
presented changes of deflection and stresses in prestressing tendons at test
load. Changes of these two parameters have been also shown for the process of
simulation of corrosion rupture of prestressing tendons in one of the bottom
flanges. Interaction between two adjacent girders in carrying applied loads, as
well as the 3D model of behoviour of structure have been experimentally
confirmed.