A Performance-Based Approach to Retrofitting Unreinforced Masonry Structures for Seismic Loads by Keith M. Bouchard Bachelor of Science in Civil Engineering Northeastern University, 2006 Submitted to the Department of Civil and Environmental Engineering in Partial Fulfillment of the Requirements for the Degree of MASTER OF ENGINEERING in Civil and Environmental Engineering at the MASSACHUSETTS INSTITUTE OF TECHNOLOGY June, 2007 @ 2007 Keith M. Bouchard. All rights reserved. The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electronic copies of this thesis document in whole or in part in any medium known or hereafter created. Signature of Author: Certified by: Accepted by: MASSACHUSETTS INSTq fE OF TECHNOLOGY JUN 0 7 2007 LIBRARIES Department of Civil and Environmental Engineering May 14, 2007 t I A I K) CU P/ofessor Jerome J. Connor Department of Civil and Environmental Engineering Thesis Supervisor Professor Daniele Veneziano Chairman, Departmental Committee for Graduate Studies