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  1. GE34

    Is ADT the only criteria for road Class for IDOT?

    Fellow Engineers, Is ADT the only criteria for Road Classification (I.e Class II vs. Class III) in Illinois? Please give me your best engineering judgement because it's critical for me to have the correct assumptions for problem definition. For example, a two lane (1 lane in each...
  2. GE34

    Zero Air Voids Curve 14 lbs higher than Plotted Proctor Curve?

    I have a plotted Modified Proctor (ASTM D 1557-07) curve of fine sand (SP) with a plotted zero air voids curve that is 14 pounds above the peak and wet side of the Proctor curve. The wet side of the curve is parallel to the plotted proctor curve and the curve does not cross to the right of the...

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