Red Seal Bricklayer Practice Exam

What is a common issue when bricks are laid too tightly?

1. Cracking due to expansion and contraction

2. Increased moisture retention

3. Uneven surface texture

4. Inconsistent color appearance

The correct answer is: Cracking due to expansion and contraction

When bricks are laid too tightly, a common issue that arises is cracking due to expansion and contraction. Bricks are made from clay or concrete, which naturally expands when heated and contracts when cooled. If the bricks are positioned too closely together without allowing for necessary movement, this expansion and contraction creates internal stress within the brickwork. As a result, the bricks may develop cracks over time as they cannot shift appropriately to accommodate temperature changes, moisture levels, or structural movements. This is particularly important in areas subject to significant temperature variations or when using clay bricks that can absorb moisture. Hence, ensuring proper spacing, often achieved by leaving appropriate joints and using mortar effectively, is essential for maintaining the integrity of brick structures. The other options may involve concerns in masonry work but do not relate directly to the specific issue caused by tightly laid bricks as much as cracking does.