U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
Save the entire spreadsheet (workbook) to your computer.
Open the file in Excel 97 or later.
Press Ctrl + j on your keyboard before using this spreadsheet.
Fill out the Input Form. The general agency information is not required for the analysis, but it may be desirable to include this information for display on the Results sheet.
Click on the Calculate button to calculate the thickness.
To view sensitivity plots, click on the appropriate button on the Input Form.
To calculate seasonal k-value or traffic, click on the appropriate button on the Input Form. This will bring up a separate calculation worksheet. Once the worksheet is completed, click on the Calculate button. To paste this value into the Input Form, click on the Export to Input Form button.
A red triangle in an input box signifies a note that is relevant to that input. To view a note, simply position the cursor over the input box.
The spreadsheet includes sample inputs. You may find it efficacious to retrieve these inputs into the spreadsheet and then edit them as needed.
Due to differences in your hardware/software setup, you may need to resize some of the columns on the spreadsheet to be able to read them.
The figures accompanying the text have been scanned into the spreadsheet. It may be useful to print out the figures for reference.
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