Landscaping License Practice Test

What is the correct procedure for installing a wooden header board with a strong curve?

1. Use one 4" board and place it directly on the soil

2. Use two 3/8" boards and place them loosely

3. Use at least four 3/8" 4" boards laminated tightly with staggered joints

4. Use only treated lumber without laminating

The correct answer is: Use at least four 3/8" 4" boards laminated tightly with staggered joints

The correct procedure for installing a wooden header board with a strong curve involves using at least four 3/8" thick boards laminated tightly with staggered joints. This method gives the necessary strength and flexibility needed to conform to the curve while preventing warping or breaking. Laminating multiple boards together distributes stress more effectively along the curve, which is crucial for maintaining the integrity of the structure over time. The staggered joints further enhance this stability, as they prevent weak points from aligning, which could lead to failure in the curved section. Utilizing this technique ensures that the wooden header will be strong enough to bear any potential loads while adapting to the desired curvature without compromising its durability or performance. In contrast, using a single board or loosely fitting multiple boards would not provide the strength or stability required for a curved installation, and relying solely on treated lumber without laminating would not offer the necessary resilience under varied environmental conditions or loads.