1. Professor, Dept. of Civil Engineering, Pennsylvania Transportation Institute, Penn State Univ., 203 Transportation Research Bldg., University Park, PA 16802.
2. Associate Professor, Dept. of Architectural Engineering, Penn State Univ., 104 Engineering Unit A, University Park, PA 16802.
3. Assistant Professor, Dept. of Architectural Engineering, Penn State Univ., 104 Engineering Unit A, University Park, PA 16802.