Milling will typically remove cracks that are _______ deep:

Study for the NETTCP Hot Mix Asphalt (HMA) Inspector Test. Enhance your preparation with multiple choice questions, hints, and explanations. Get ready for your exam!

Milling is a process used in asphalt paving to remove the top layer of asphalt pavement, which can include defects such as cracks and surface irregularities. The typical depth for milling aimed at addressing cracks is between 1 inch and 2 inches. This range is effective for removing surface distress while also ensuring the underlying layers remain intact and structurally sound.

When cracks are within this depth range, milling helps to provide a smooth surface for subsequent overlay or for repaving. By addressing these cracks through milling, it prevents the defects from propagating further into the subgrade.

Choosing the correct depth is critical for both the integrity of the pavement and the longevity of the repair work. Removing less than an inch may not adequately address the surface issues, while exceeding two inches risks compromising the pavement structure below. Hence, focusing on the range of 1 to 2 inches is in alignment with standard practices in asphalt maintenance.

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