WE ARE PROUD TO BE ONE OF THE STRONGEST AND MOST PROGRESSIVE STATE ASPHALT ASSOCIATIONS IN THE NATION.

PAVEMENT DESIGN

The Asphalt Paving Association of Iowa (APAI), in conjunction with Drs. Chris Williams and Ashley Buss of Iowa State University have developed an easy-to-use pavement design tool known as I-Pave TM. With I-Pave, you can design pavements using AASHTO 93 Design methods and find the optimum rehabilitation method for your next project.

Click here to try I-Pave!

In the early 2000s the APAI developed a comprehensive Asphalt Design Guide that is still relevant over a decade later. 

APAI ASPHALT DESIGN GUIDE

This design guide is intended to give general structural design and mix type selection guidance for some typical Iowa pavements. It is organized by general purpose, with each use type being addressed on a different page. These guidelines are intended for use in lieu of other guidance or specification. They are not intended to supersede official guidelines or specifications.


View the entire 125 Page Iowa Design Guide in PDF format

Or go directly to individual chapters below!


Click icon to view

Chapter 2 - Asphalt and Asphalt Paving

  • 2-1 Materials
  • 2-1 Asphalt Defined
  • 2-1 Aggregates
  • 2-4 Asphalt Cement
  • 2-5 Asphalt Concrete
  • 2-6 Cold Mix Asphalt Concrete

Click icon to view

Chapter 3 - Design Considerations

  • 3-1 Fundamentals of Design
  • 3-1 Traffic
    • 3-2 Traffic Classifications
  • 3-4 Soil Support Capability
    • 3-8 Subgrade Classes
  • 3-9 Drainage
  • 3-11 Design Types
  • 3-12 Asphalt Concrete Specifications
    • 3-15 Construction of Asphalt Pavements
    • 3-15 Construction Equipment
    • 3-17 Construction Practices
    • 3-18 Pavement Markings
    • 3-19 Traffic Control Through Work Areas
  • 3-21 Testing and Inspection

Click icon to view

Chapter 4 - Thickness Design

  • 4-1 General Considerations
  • 4-1 Pavement Thickness Design Tables
    • 4-3 Residential Streets
    • 4-4 Collector Streets
    • 4-5 Arterial Streets
    • 4-6 Low Volume Secondary and Rural Roads
    • 4-6 High Volume Secondary and Rural Roads

Click icon to view

Chapter 5 - Parking Lot Design

  • 5-1 General Considerations
    • 5-2 General Planning
  • 5-7 Thickness Design for Parking Lots
    • 5-10 Heavy Loaded Areas
    • 5-10 Industrial Parking Lots
  • 5-11 Asphalt Concrete Curb
    • 5-13 Asphalt Mat-platform for building Construction and Site Paving

Click icon to view

Chapter 6 - Designs for Recreational Uses

  • 6-1 Asphalt Pavements For Non-Vehicular Use
    • 6-2 Bikeways, Golf Cart Paths, Recreation Trails and Walkways
    • 6-4 Pavement Thickness
  • 6-5 Recreational Areas
    • 6-5 Basketball Courts
    • 6-7 Pavement Thickness
  • 6-8 Tennis Courts
    • 6-10 Pavement Thickness
  • 6-11 Asphalt-Rubber Running Tracks

Click icon to view

Chapter 7 - Pavement Management

  • 7-1 Pavement Management Concepts
    • 7-2 Rating a Road
    • 7-2 Interpretation of a Condition Rating
  • 7-4 Pavement Maintenance
    • 7-5 Full-depth Asphalt Patching
    • 7-8 Thin Surface Treatments
  • 7-10 Asphalt Concrete Overlays
    • 7-11 Overlay Thickness Calculations

Click icon to view

Chapter 8 - Rehabilitation

  • 8-1 Recycling Asphalt Pavements
    • 8-3 Breaking and Seating
    • 8-4 Rubblizing
    • 8-5 Paving Fabrics
    • 8-5 Sawcut and Sealing Joints

Click icon to view

Appendix A - Pavement Failure Identification

  • Identifying and Correcting Pavement Failures
  • Types of Pavement Failures

Click icon to view

Click icon to view

Appendix C - Conversion Tables

  • Table C-1. Approximate Quantities of Asphalt Concrete Per Square Yard
  • Table C-2. Gallons of Emulsified Asphalt Required Per 100 Linear Feet:
    Various Widths and Rates
  • Table C-3. Tons of material Required Per 100 Linear Feet for Various Widths and Pounds Per Square yard
  • Table C-4. Cubic Yards of Material Per 100 Linear Feet: Various Widths and Depths

Click icon to view

Appendix D - Publications

  • National Asphalt Paving Association Publications
  • The Asphalt Institute Publications
  • Government Publications
 
 
 

Please Wait... processing