M. Khanmohammadi - Assistant Professor, College of Eng., University of Tehran
M.A Nahvinia - M.Sc in earthquake eng., College of Eng., University of Tehran
M.S. Marefat - Professor, College of Eng., University of Tehran,
H. Behnam - M.Sc in earthquake eng., College of Eng., University of Tehran

confined masonry walls CMW with tie columns and bond beams are widely used in masonry buildings worldwide. In this work twoo CMW wall with characteristics similar to those used in iranian practice have been tested the two specimens are half scale with aspect ratiois of 1.4 and 2 length to height and hvae been tested under cyclic lateral load in the structural laboratory of university of tehran.

masonry,seismic behavior , shear strength, confined walls, lateral loading