To ensure adequate performance of a project, a mix design must be developed and submitted for approval prior to placement of material. The design shall be devoloped by a certified asphalt design technician and established a range of torlerance for the asphalt and aggregate mixture. Any change in materials, mixture problems or segregation may result in the need for a new or revised job mix formula.
The thickness of the lift is typically three to five times the Nominal Maximum Aggregate Size (NMAS).
Use RAP to help control cost and prevent scuffing.