1. Dept. of Civil and Environmental Engineering, Univ. of Auckland, 20 Symonds St., Auckland 1010, New Zealand (corresponding author). ORCID: .
2. Watercare Chair in Infrastructure, Dept. of Civil and Environmental Engineering, Univ. of Auckland, 20 Symonds St., Auckland 1010, New Zealand.
3. Manager-Asset Lifecycle, Watercare Services Limited, 73 Remuera Rd., Remuera, Auckland 1050, New Zealand.