What is the term for the final grade adjustment of each roadway layer?

The term that accurately defines the final grade adjustment of each roadway layer is "Final Shaping." This process involves making the necessary adjustments to ensure that the layers of the roadway are precisely formed to meet design specifications. It encompasses analyzing the existing surface and performing adjustments to ensure that it meets the intended grade, profile, and cross-section of the road.

Final shaping is critical for achieving proper drainage, load distribution, and overall structural integrity of the roadway, which supports the safety and performance of vehicles traveling on it. This step is typically involved just before paving or laying down any additional layers, ensuring that the foundation is solid and well-prepared for subsequent construction phases.

The other terms are related but do not specifically capture the concept of making precise adjustments to the final grade of each layer as effectively as final shaping does.