Masonry Retrofit
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This document provides guidelines for seismic retrofitting of existing unreinforced masonry bearing wall buildings. It outlines two procedures for analysis: the General Procedure based on strength design and allowing 75% of code seismic loads, and the Special Procedure using limit state design based on dynamic testing of flexible diaphragms and URM wall responses. Key aspects covered include material strength values, masonry testing requirements, analysis methods, use of cross-walls to reduce diaphragm deflections, and displacement control of wood diaphragms.
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