1. Department of Knowledge and Communication Management, University for Continuing Education Krems, 3500 Krems an der Donau, Austria
2. Department of Structural Engineering, Norwegian University of Science and Technology, 7491 Trondheim, Norway
3. Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology, 2815 Gjøvik, Norway
4. Hume Concrete Sdn Bhd, Wisma Hume, Petaling Jaya 46100, Malaysia
5. College of Civil Engineering, Hunan University, Changsha 410082, China