In low-rise concrete wall housing, 100-mm thick walls are made of concrete with strengths between 15 MPa and 20 MPa, and are often reinforced with welded-wire mesh and using web steel ratios smaller than the minimum ratio prescribed by ACI Building Code. Aimed at better understanding the seismic behavior of walls in concrete housing, an extensive experimental comprising quasi-static and shake table tests of 39 isolated walls was carried out. Variables studied were the height-to-length ratio, solid walls and walls with openings