For a thick lift test section how many QC density tests are taken?

For a thick lift test section how many QC density tests are taken?

• A. 3
• B. 4
• C. 5
• D. 6

Answer: (C)

In a thick lift test section, the density QC tests are planned to sample the lift at multiple points so you’re not relying on a single measurement to judge compaction. Five tests are taken to spread checks along the length: near each end, a couple of spots toward the middle, and the center. This distribution helps catch variations in compaction that can occur from equipment movement, windrow shape, or roller coverage, ensuring the entire lift meets the target density, not just a portion of it. Using five tests provides a practical balance between detecting potential weak spots and keeping field work efficient; too few tests risk missing under-dense areas, while more tests add time and cost without always yielding meaningful gains.

In a thick lift test section, the density QC tests are planned to sample the lift at multiple points so you’re not relying on a single measurement to judge compaction. Five tests are taken to spread checks along the length: near each end, a couple of spots toward the middle, and the center. This distribution helps catch variations in compaction that can occur from equipment movement, windrow shape, or roller coverage, ensuring the entire lift meets the target density, not just a portion of it. Using five tests provides a practical balance between detecting potential weak spots and keeping field work efficient; too few tests risk missing under-dense areas, while more tests add time and cost without always yielding meaningful gains.