Brick masonry involves constructing walls by bonding together brick units with mortar. The strength of brick masonry depends on factors like the quality of bricks, mortar, bonding method, and workmanship. There are different types of bonds used in brick masonry like English bond (alternating header and stretcher courses), Flemish bond (headers and stretchers alternately within each course), and Stretcher bond (all bricks laid as stretchers). Proper use of bonds, materials, and construction techniques provides strong, durable brick masonry walls.