1. Lecturer, Dept. of Civil and Structural Engineering, Univ. of Sheffield, Sir Frederick Mappin Bldg., Mappin Street, Sheffield S1 3JD, U.K. (corresponding author). E-mail: m.guadagnini@sheffield.ac.uk
2. Professor of Construction Innovation, Dept. of Civil and Structural Engineering, Univ. of Sheffield, Sir Frederick Mappin Bldg., Mappin Street, Sheffield S1 3JD, U.K.
3. Professor of Structural Engineering, Dept. of Civil and Structural Engineering, Univ. of Sheffield, Sir Frederick Mappin Bldg., Mappin Street, Sheffield S1 3JD, U.K.