1. Department of Mechanics and Building Constructions, Institute of Civil Engineering, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-787 Warsaw, Poland
2. Building Research Institute, Filtrowa 1, 00-611 Warsaw, Poland
3. Faculty of Civil Engineering, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland