FINAL CONTRACT REPORT INVESTIGATION OF THE RESISTANCE OF THE PILE CAPS AND INTEGRAL ABUTMENTS TO LATERAL LOADING ROBERT L. MOKWA, P.E., and J. MICHAEL DUNCAN, Ph.D., P.E. Charles E. Via, Jr. Department of Civi I and Environmental Engineering Virginia Polytechnic and State University Blacksburg, Virginia V-[·R·G-l·N·[-A .. 1_- -- TRANSPORTATION RESEARCH COUNCIL VIRGINIA TRANSPORTATION RESEARCH COUNCIL