Landscaping License Practice Test

What is the recommended thickness for spreading bedding sand under concrete pavers?

1. 3/4 inch

2. 1 inch

3. 1.5 inches

4. 2 inches

The correct answer is: 1 inch

The recommended thickness for spreading bedding sand under concrete pavers is 1 inch. This thickness ensures that the pavers are adequately supported, allowing for proper alignment and stability once installed. A 1-inch layer provides a balance between sufficient compaction and minimal movement, which is crucial for maintaining the integrity of the paved surface. Using a thickness of 1 inch allows for enough sand to level out any minor irregularities in the base and provides a cushion that can help accommodate some movement without causing cracking or shifting. If the bedding sand layer is too thick, it can lead to instability because the pavers may settle unevenly or become misaligned over time. On the other hand, a thinner layer might not provide enough support for the pavers, leading to potential issues with shifting or cracking under load. Thus, 1 inch is considered optimal for achieving a durable and stable installation of concrete pavers.