1. Associate Member, ASCE
2. Member, ASCE
3. Assoc. Prof., Dept. of Civ. Engrg., Res. Inst. of Industrial Technol., Gyeongsang Nat. Univ., Gyeongnam, Jinju Si, South Korea, 660–701. E-mail: Lskang@nongae.gsnu.ac.kr
4. Charles H. Leavell Prof., Constr. Engrg. and Mgmt. Program, Stanford Univ., Stanford, CA 94305.