This chapter provides guidance on calculating the Design Equivalent Single Axle Load (ESALD). The ESAL forecast is critical in determining the Structural Number Required (SNR) for flexible pavement and the Depth Required (DR) for rigid pavement. Proper attention to input and good engineering judgement should be used when developing the ESAL forecast. The following topics will be covered in this chapter:

  • Truck Forecasting Process
  • ESALD Equation
  • Steps for producing yearly 18-KIP ESALs