1. Geotechnical Software Developer, Rocscience, Inc., 54 St. Patrick St., Toronto, ON, Canada M5T 1V1.
2. Geomechanics Specialist, Rocscience, Inc., 54 St. Patrick St., Toronto, ON, Canada M5T 1V1.
3. Professor, Dept. of Civil and Environmental Engineering, National Univ. of Singapore, Blk E1A, #07-03, 1 Engineering Dr., Singapore 117576 (corresponding author). ORCID: .
4. Professor, Dept. of Civil Engineering, National Taiwan Univ., #1, Roosevelt Rd. Section 4, Taipei 10617, Taiwan. ORCID: .