1. Doctoral Student, Czech Technical Univ. in Prague, Thákurova 7, 166 29 Prague, Czech Republic (corresponding author).
2. CAE Consultant, Designtec s.r.o., Žižkova 1990/59, 616 00 Brno, Czech Republic.
3. Professor, Head of Dept. of Steel and Timber Structures, Czech Technical Univ. in Prague, Thákurova 7, 166 29 Prague, Czech Republic.
4. Deputy Head, Dept. of Steel and Timber Structures, Czech Technical Univ. in Prague, Thákurova 7, 166 29 Prague, Czech Republic.