Which bond shows vertical alignment of bricks?

• A. Running bond
• B. English bond
• C. Stack bond
• D. Flemish bond

Answer: (C)

Vertical alignment of bricks means the vertical mortar joints run straight from the top of the wall to the bottom without offset. That pattern appears in stack bond, where each brick is placed directly on top of the one below with no horizontal offset. Because the joints line up in a straight column, you can trace a continuous vertical line through the wall’s joints.

Other bonds purposely stagger joints to increase interlock and strength: running bond offsets each brick by half a brick so the vertical joints don’t line up; English bond alternates headers and stretchers in each course, preventing a continuous vertical joint; Flemish bond combines headers and stretchers in the same course, also keeping joints offset. However, stack bond creates the clean vertical alignment described in the question, though it’s weaker structurally and used mainly for veneers or non-load-bearing applications.