1. Research Scholar, Dept. of Civil Engineering, Indian Institute of Science, Bangalore, India. E-mail: pijush@civil.iisc.ernet.in
2. Professor, Dept. of Civil Engineering, Indian Institute of Science, Bangalore 560012, India. E-mail: sitharam@civil.iisc.ernet.in
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Massachusetts Lowell, 1 University Ave., Lowell, MA 01854. E-mail: Pradeep_Kurup@uml.edu