Affiliation: | 1Senior Lecturer, Dept. of Civil and Environmental Engineering, The Univ. of Auckland, Private Bag 92019, Auckland, New Zealand. E-mail: s.coleman@auckland.ac.nz 2Contract Administrator∕Estimator, LH Building Services P∕L, P.O. Box 1044, Menai Central, NSW 2234, Australia. E-mail: mhwzhang@yahoo.com.au 3Graduate Student, Dept. of Civil and Environmental Engineering, The Univ. of Auckland, Private Bag 92019, Auckland, New Zealand, E-mail: tclu001@ec.auckland.ac.nz
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