Williams HBM Base Asphalt Design

This spreadsheet calculates the total pavement thickness required for a pavement including a Hydraulically Bound Material (HBM) foundation.

The spreadsheet takes user inputs for subgrade CBR, HBM foundation type and maximum wheel load. It then calculates the total pavement depth required using the Williams formula.

The spreadsheet also includes a unique tool allowing the user to see the effects of different subgrade CBR.

Flexible Road Structural Design Spreadsheet - Williams HBM Base Asphalt Design Spreadsheet.

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