Pavement Design Resources

Flexible Pavements of Ohio (FPO) is providing resource guidance for the design and construction of quality asphalt pavements consistent with Ohio's environmental conditions, foundation soils, readily available paving materials, and local experience. FPO's objective is to provide technical information which has produced asphalt pavements with a proven record of economy, good performance and lasting value.

Flexible Pavements of Ohio (FPO) Design Resources
Technical Bulletins
FPO has developed a series of Technical Bulletins on the specification, design and construction of asphalt pavements.

Select the link to access FPO's Technical Bulletins.

404-LVT (Low Volume Traffic) Asphalt Concrete
404-LVT is a fine-textured asphalt concrete mix, rich in asphalt binders, specifically developed for use in low volume traffic applications as an alternative to chip sealing and microsurfacing to provide longer service life between treatments. It is a 1-inch thick asphalt overlay that corrects minor surface distresses, provides increase to pavement strength, enhances ride comfort, and improves road profile and driver safety.

Select the link to view the 404LVT specification.

FPO Design and Construction Guide
FPO’s Design and Construction Guide contains design information on a variety of asphalt pavement applications. This publication is current unavailable and out of print but select sections have been updated and are available as a free download.

Select the link for design guidance on parking lots for cars.
Select the link for design guidance on pavements for heavy truck use.
Select the link for design guidance on residential driveways.

FPO Municipal Pavement Design Standards
FPO has developed a chart of typical designs and asphalt mix type selection as guidance to local governments on typical pavement build-ups based on type of roadway, amount of truck and vehicle traffic, and soil condition. Select the link to view the chart of recommended municipal pavement standards.

Pavement Design Software
PaveXpress is a free web-based pavement design tool available for use by local agencies, engineers and architects who need a reliable way to quickly determine the necessary pavement thickness for a given section of roadway or project. PaveXpress creates technically sound pavement structural designs for both asphalt and concrete pavements based on widely accepted industry standards from the American Association of State Highway Transportation Officials (AASHTO).

Select the link for additional information and to access PaveXpress.

Perpetual Pavement Design Software
The Asphalt Pavement Alliance (APA) offers two versions of its software for the design and analysis of Perpetual Pavements. Both versions of the software are available as free downloads.

PerRoad 4.4
PerRoad is uses the mechanistic-empirical design philosophy. The program couples layered elastic analysis with a statistical analysis procedure (Monte Carlo simulation) to estimate stresses and strains within a pavement. Version 4.4 provides design results as percentile responses and as conventional designs with transfer functions. In order to predict strains that would prove detrimental for fatigue cracking or structural rutting, PerRoad requires the following inputs:

  • Seasonal pavement moduli and annual coefficient of variation (COV)
  • Seasonal resilient moduli of unbound materials and annual COV
  • Thickness of bound materials and COV
  • Thickness of unbound materials
  • Load spectrum for traffic
  • Location for pavement response analysis
  • Magnitude of limiting pavement responses
  • Transfer functions for pavement responses exceeding the user-specified level for accumulating damage

Click here to learn more about Perpetual Pavement design and PerRoad 4.4 software.

Download PerRoad 4.4 | Online Help and Guidance

PerRoadXpress 1.0
PerRoadXpress is an easy-to-use, all-on-one-screen program for designing Perpetual Pavements for low- and medium-volume roads and parking lots. The designer chooses a type of asphalt cement. PerRoadXpress then allows the designer either to use defaults for traffic and soil, or to input the actual values if they are known. Granular base thicknesses from 0 to 10 inches are included. The software quickly provides the user with a recommendation for the total thickness of asphalt pavement needed for a particular situation. PerRoadXpress was developed in response to requests by public works officials and owners of commercial property.

Download PerRoadXpress 1.0 now

Other Pavement Design Resources
Asphalt Paving Alliance’s Construction Checklist for Parking Lots
This checklist is designed to help the onsite inspector or owner’s representative identify key aspects of parking lot construction and best practices known to produce a quality pavement project. The checklist is based upon national recommendations, local recommendations may vary depending upon climate, materials, and practices.

Select the link to view this checklist.

City of Columbus Residential Street Pavement Design Policy
In 2006, the City of Columbus developed a Residential Street Pavement Design Policy which includes a catalog of  designs categorized by pavement material type, “standard” and “soil-stabilized” subgrade, and average daily traffic. 

Select the link to view Columbus' Residential Street Pavement Design Policy.

Wisconsin Asphalt Pavement Association
The Wisconsin Asphalt Pavement Association (WAPA) ireleased a 2016 Asphalt Pavement Design Guide to communicate the fundamentals and fine points of asphalt pavement design, construction, and rehabilitation. 

Select the link to view the WAPA's 2016 Asphalt Pavement Design Guide.