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154 Figure 1. Summary Flow Chart for Applying the User Guide Local Validation Similar to the validation conducted as part of the study, an agency should assemble data for a range of local pavements and compare the local pavement performance to the modelsâ predicted performance. As noted in the report, the models should only be applied within the 5th to 95th range of input values used to develop the model as provided in Table 2. Refer to the final report to find more detail on the input data ranges. The agency should assemble two sets of Collect agency input and performance data to validate each model. Compare agency measured performance data to predicted model performance values. Insert agency input data into each model. MODEL VALIDATION Does the model reflect agency measured performance? YES NO Examine model output for predicted air voids influence. Insert input data into the model. Assemble input data for common groups of pavements. Determine if a construction specification change is warranted for as-constructed air voids. Follow model development steps to create models. Assemble input and performance data for broad range of pavements. Continue with model validation.
