2.3 Discussion Items

Topics to be discussed during pavement design meetings or conferences are outlined in the district SOP. They include:
  • communication to staff (including maintenance) of this SOP
  • communication of the project scope and available funding and pavement design strategies (district-wide policies and project-specific considerations)
  • existing pavement history and material and structural analysis. Examples include:
    • performance and maintenance history (multi-year trends)
    • district maintenance staff input
    • existing pavement analysis (field and lab testing to characterize functional and structural properties).
  • equivalent single axle loads (ESAL) and the average ten heaviest wheel loads daily (ATHWLD) review and adjustments. For example, Transportation Planning and Programming (TPP) maps and data for ESALs generated through current data systems may not account for specific truck generators or may overestimate truck loads or percent trucks in the traffic stream.
  • Modified Texas Triaxial Check process
  • plan for use of recycled and existing materials
  • material selection (including selection of hot-mix asphalt [HMA]/mixture type, binder type, type of flexible base, treatment of bases, etc.)
  • pavement design material properties
  • Wet Surface Crash Reduction Program 1
  • need for and type of subgrade treatment
  • alternate pavement designs (Alternate materials selection - not pavement type. Alternates to limited competition pavement rehabilitation techniques such as Thin-bonded Wearing Courses [Novachip] should be addressed.)
  • alternate pavement types for new or total reconstruction projects
  • pavement design strategies based on ESALs (chart or descriptive)
  • special considerations, such as:
    • urban designs
    • constructability (e.g., ACP to match curb depth)
    • lateral support provided by shoulders
    • typical section, front slope, and ditch geometry
    • project drainage
    • 2R, 3R, 4R criteria
    • special haul routes such as logging, aggregate haul roads, or energy sector site development
    • sulfate-bearing and organic rich soils
  • use and methodology for potential vertical rise (PVR) design consideration
  • pavement design development and approval process
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