Ross Calvert¹, Colin Whittaker², Alison Raby³, Alistair G. L. Borthwick⁴, Mark L McAllister¹ and Ton van den Bremer⁵, (1)University of Oxford, Oxford, United Kingdom, (2)University of Auckland, Civil and Environmental Engineering, Auckland, New Zealand, (3)Plymouth University, School of Engineering (Faculty of Science and Engineering), Plymouth, United Kingdom, (4)University of Edinburgh, Edinburgh, United Kingdom, (5)University of Edinburgh, School of Engineering, Edinburgh, United Kingdom