1. Department of Civil Engineering, Faculty of Engineering; Prince of Songkla University; Songkhla 90112 Thailand
2. Civil Engineering Program; School of Engineering, University of Phayao; Phayao Thailand
3. Department of Civil Engineering, ERI; Gyeongsang National University; Jinju South Korea
4. Department of Civil Engineering, Faculty of Engineering; Prince of Songkla University; Songkhla Thailand