1. Director, Dr Toh Associates Sdn Bhd, Geotechnical Consultant, Kuala Lumpur, Malaysia
2. PhD candidate, Department of Civil & Environmental Engineering, Universiti Teknologi Petronas, Bandar Seri Iskandar, Perak, Malaysia (corresponding author: )
3. Associate Professor, Department of Civil & Environmental Engineering, Universiti Teknologi Petronas, Bandar Seri Iskandar, Perak, Malaysia