This paper describes an experimental program to investigate the masonry walls under different cases. Brick masonry is one of the oldest building materials. These structures are usually supported by masonry bearing walls. The results of tests on nine specimens and discussions of the results, the behavior of specimens under loading, the modes of failure, the treatment of test results and comparisons between the different specimens are presented. The overall height, length, and the thickness of the specimen is 1.20, 1.20, and 0.12m. All test specimens are tested to failure. The results are presented in a way to show the effect of each individual group. First group discusses the effect of the change in depth of the lower beam; the second investigate the existence of the openings in the walls while the third group reports the effect of the intersection between the main wall and perpendicular walls at its both ends. It was found that the increase in the depth of lower beam decreases the ultimate deflection and increases the ultimate load (failure load). The presence of the opening in the wall reduces the stiffness of the wall, subsequently reduces the failure load and increases deflection at the same load level. The increase of the opening size reduces the strain capacity of the wall leading to earlier failure. The increase in the stiffness of the intersecting wall reduced the deflection of the target wall and increased failure load.