Which bond is formed by five stretchers and one header in a repeating pattern?

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

Answer: (D)

Common bond is defined by a repeating pattern of multiple stretchers followed by a header, typically five stretchers and one header, repeated every few courses. The stretchers build up the wall lengthwise, while the header course ties the wall together across its width, connecting multiple wythes. This creates a strong, economical bond for multi-wythe walls. The other bonds don’t follow this pattern: running bond uses only stretchers with continuous offset and no header in a regular sequence; Flemish bond places headers and stretchers in alternating positions within the same course; stack bond aligns bricks in vertical columns with no stagger or header rhythm.