1. Scientist, Council of Scientific and Industrial Research Structural Engineering Research Centre (CSIR-SERC), CSIR Road, Taramani P.O., Chennai 600 113, India (corresponding author).
2. Professor, College of Engineering, Guindy, Anna Univ., Chennai 600 025, India.
3. Former Director, Council of Scientific and Industrial Research Structural Engineering Research Centre (CSIR-SERC), CSIR Road, Taramani P.O., Chennai 600 113, India.
4. Director, Council of Scientific and Industrial Research Structural Engineering Research Centre (CSIR-SERC), CSIR Road, Taramani P.O., Chennai 600 113, India.