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Section 300 - Bases

In terms of structural longevity and riding smoothness, overall pavement quality depends primarily on the quality and uniformity of the material layers constructed under the surface course. Subgrade, subbase, and base course materials must meet specified requirements and must be properly and uniformly prepared, placed and compacted to adequately support the loads of vehicular traffic. Deficiencies in subgrade, subbase, and base course construction will invariably degrade the riding surface and cause a need for premature rehabilitation.

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