Design guide for secondary road pavements in Virginia.
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Design guide for secondary road pavements in Virginia.

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    A design method for secondary roads (based on AASHO Road Test results and experience in Virginia) is described which consists of two parts: the evaluation of the soil support value of the subgrade, the thickness equivalencies of the paving materials, and the traffic in terms of vehicles per planning actions. The References are classified under of the required thickness index of the pavement and the selection of the materials and layer thicknesses to meet the design thickness index. Figures illustrate soil support values and soil resilience factors. The thickness equivalency values for materials used in secondary roads are tabulated as well as slab and bare thickness for different traffic categories. A nomograph correlating the soil support value, traffic and thickness index is presented.
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