1. Director, Juno Services Ltd., 11 Driver Rd. West, RD1, Hamilton 3281, New Zealand. ORCID:
2. Associate Professor, Dept. of Civil and Environmental Engineering, Univ. of Auckland, Auckland 1142, New Zealand (corresponding author). ORCID: .
3. Director, Rubicon Solutions, 75 Avonwold Rd., Saxonwold, Johannesburg 2196, South Africa.