1. Graduate Structural Engineer, Hatch, 25 Atchinson Street, Wollongong, NSW 2500, Australia; formerly, Honours Student, School of Civil, Mining and Environmental Engineering, Univ. of Wollongong, Wollongong, NSW 2500, Australia.
2. Senior Lecturer, School of Civil, Mining and Environmental Engineering, Univ. of Wollongong, Wollongong, NSW 2500, Australia (corresponding author).