Modified Structural Number (SNC)


Modified Structural Number (SNC) : A pavement strength parameter, being a refinement of the AASHO Road Test estimation of pavement strength (Structural Number), which directly takes into account the subgrade contribution to pavement strength. The Modified Structural Number (SNC) is equal to the Structural Number (SN) that would be required if the pavement were to be designed to carry the same traffic on a subgrade with a CBR value of 3%
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