The worksheet should automatically calculate SN contributions for each layer and verify that the total equals or exceeds SN_required. Standard calculations include:
is found by solving the following equation for a known traffic load ( cap W sub 18 aashto flexible pavement design excel spreadsheet
Input your traffic, reliability, serviceability, and subgrade MRcap M sub cap R Trigger the Excel macro. aashto flexible pavement design excel spreadsheet
For those who may not be familiar, AASHTO (American Association of State Highway and Transportation Officials) provides guidelines for flexible pavement design, which is a widely used method for designing pavement structures. aashto flexible pavement design excel spreadsheet
Since $SN$ appears on both sides of the main equation, use :
Using a typical spreadsheet follows a logical workflow: