Brick masonry is the oldest type of building construction, and despite advances in technology, it is still widely used worldwide. The quality of resources adopted in the erection, thickness, and the kind of masonry bond all impact the mechanical characteristics of the prisms. The investigation is intended to examine the mechanical features of masonry that are affected by the joint thickness and mortar type. Cement mortar and hydrated lime mortar are combined with the same kind of brick throughout the experimental work. For evaluation, 5 layers of bricks are used to prepare a masonry prism prototype. The thicknesses used in the study are 13 ± 3 mm, 20 ± 3 mm, and 27 ± 3 mm with cement mortar and lime mortar. Results reveal that the properties of the mortars impact the failure mechanisms of the prisms. Crushing brick units showed masonry failure with 13 mm of mortar thickness, and 27 mm of mortar thickness showed the shearing failure of brick-and-mortar units. A joint thickness of about 20 mm is advised during the construction of standard masonry walls to sustain the loading.