TY - BOOK AU - Stephen A. Mahin AU - Fenves, Frefory L. AU - Filippou, Filip C. AU - Moehile, Jack P. AU - Thewalt, Christopher R. TI - Executive summary on: Phase 3: evaluation and retrofitting of multilevel and multiple-column structures: an analytical, experimental, and conceptual study of retrofitting needs and methods T2 - Report No. UCB/EERC-97/06 MAy 1997 U1 - 624.1762 PY - 1997/// CY - Berkeley PB - University of California KW - Concrete bridges -- Earthquake effects. N1 - A report on research sponsored by the California Department of Transportation ER -