When should a second thickness check be made to give the paver time to adjust?

The correct answer is based on the need to allow the paver sufficient time to make necessary adjustments to ensure the correct thickness of the asphalt being laid. By specifying a minimum of 32 feet, this choice recognizes that the paver requires a reasonable distance to stabilize and set properly before reassessing the thickness.

This distance is significant because it provides enough sample area for the paver's consistency, allowing for adjustments in material flow and paving speed, which can vary due to environmental conditions, material distribution, or mechanical issues. Making a second thickness check too soon, such as after only 10 feet or immediately, may not yield accurate results because the system may not have settled into its operational rhythm. Similarly, checking after a much longer distance, like 50 feet, could lead to larger issues before any needed corrections are identified. Thus, waiting for a minimum of 32 feet strikes a balance, enabling effective monitoring while still ensuring the quality of the asphalt work being performed.