1. Scientific Assistant, Dept. of Civil Engineering, Haute Ecole d’Ingénierie et d’Architecture de Fribourg (HES-SO), CH-1705 Fribourg, Switzerland.
2. Operational Head, Platform of Hydraulic Constructions, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
3. Professor, Dept. of Civil Engineering, Haute Ecole d’Ingénierie et d’Architecture de Fribourg (HES-SO), CH-1705 Fribourg, Switzerland (corresponding author).