Ncat report 14 04 flexible pavement design state of the practice. Hcd file based upon merra data for the selected section. Aashto is an international leader in setting technical standards for all phases of highway system development. Subsequently, these procedures were adopted by the american. Implementation of the aashto mechanisticempirical pavement design guide and software documents the experience of transportation agencies in the implementation of the 2008 american association of state highway and transportation officials aashto mechanisticempirical pavement design guide. The software is brimming with quick help buttons to assist the designer with obtaining and properly inputting the necessary information.
This tool allows users to design new pavement structures as well as calculate asphalt overlay thickness for rehabilitation and maintenance projects. From the early 1960s through 1993, all versions of the american association for state highway and transportation officials aashto guide for design of pavement structures were based on limited em. What it is microsoft excel spreadsheet automates the design and analysis procedures of the 1998 aashto supplement rigid pavement design software. While this software does not address all of the challenges to pavement design, it is a quantum leap forward from previous pavement design procedures and facilitates future development in pavement modeling and analysis. A mechanistic computer program a mechanistic computer program the washington state dot has developed a layered elasticbased software package called the everseries pavement analysis programs sivaneswaran, pierce and mahoney, 2001 1. Oct 10, 2014 the simplified pavement design tool is based upon design equations from the 1993 aashto guide for the design of pavement structures and the 1998 supplement to the aashto guide for the design of pavement structures. Implementation of the aashto pavement design procedures into.
The 1993 aashto guide for the design of pavement structures and previous versions is one of the primary documents used by state highway agencies for designing new and rehabilitated pavements. Pavexpress is free software tool based on the 1993 aashto pavement design guide and 1998 supplement. The simplified pavement design tool is based upon design equations from the 1993 aashto guide for the design of pavement structures and the 1998 supplement to the aashto guide for the design of pavement structures for roadways. Use of the 1993 aashto guide, mepdg and historical. Aashto serves as a liaison between state departments of transportation and the federal government. Pavement thickness design evolves with latest software asphalt. Guide for the local calibration of the mechanisticempirical pavement design. The aashto pavement design guides fhwa us department of. There have been two independent verifications confirming pavexpress calculates pavement designs consistent with the methodologies in aashto 93 and 98. Calculating the esals, sn, coefficients on its own from.
Winpas 12, which is based on the commonlyused aashto 1993 pavement design guide, has been updated to make it compatible with current windowsbased operating systems, has a new gui or graphical user interface, and includes updated help screens which make the. The aashto guide for design of pavement structures aashto, 1993 is the primary document used to design new and rehabilitated highway pavements. Me pavement design guide manual of practice 2015, 2nd ed. We are working to resolve the issue as quickly as possible. Aashto design guide for asphalt pavements and the 1998 aashto supplement. Pavexpress pavement design tool flexible pavements of ohio. Department of transportation federal highway administration. It brings the designer closer to reality and considers traffic, structural features, materials, construction, and climate far more than ever before. The aashto guide for design of pavement structures is the primary. Pdf aashto guide for design of pavement structures 1993. Approximately 80% of all states use the aashto pavement design procedures, with the majority using the 1993 version.
The strategic highway research program during the early 1990s made an. Ncat report 14 04 flexible pavement design state of. A simplified pavement design tool new jersey asphalt. Volume 3 of the wsdot pavement guide wsdot, 1998 2 is available at the same site for download and contains detailed instructions on how to run the everseries programs. Trbs national cooperative highway research program nchrp synthesis 457.
The following table lists free txdot and fhwa engineering software to assist in highway design. This suite of spreadsheets allows the designer to complete the structural design of flexible roads in accordance with the aashto 1993 guide in minutes. Aashtos mechanistic empirical pavement design guide. In addition to providing an analytical approach to structural pavement design, chapter 54 presents an analytical method for selecting the most economical pavement design that can be expected to meet structural design requirements. The site is a repository for encyclopedic articles, news, and information on all topics related to pavements. It should also be noted that in 2008, aashto released the mechanisticempirical pavement design guide. From the early 1960s through 1993, all versions of the american association for state highway and transportation officials aashto guide for design of. Rigid pavement design software for the 1998 supplement to the aashto guide for design of pavement structures, part ii. This report describes the preparation of a revised pavement thickness design catalog for the washington state department of transportation wsdot using the 1993 american association of state highway and transportation officials aashto guide, the mechanisticempirical pavement design guide mepdg, and wsdot historical pavement performance data.
Guide for design of pavement structures and 1998 supplement aashto on. Association of state highway and transportation officials. The simplified pavement design tool is based upon design equations from the 1993 aashto guide for the design of pavement structures and the 1998 supplement to the aashto guide for the design of pavement structures. Pavement designanalysis software university of idaho. Accessible via the web and mobile devices free no cost to use based on aashto pavement design equations userfriendly share, save, and print project designs. Designing the right pavement for the job got easier thanks to pavexpress, a free. As aashto is no longer supporting the darwin software and 1993 design guide, many agencies are grappling with how best to make the transition from their existing methodology into m. A mechanistic computer program pavement interactive. Available for purchase at the aashto online bookstore. Features and capabilities how to use the rpd software who should use the rpd software and why how to get the rpd software aashto design guide.
This feature allows users to download the hourly climatic database. Implementation of the aashto pavement design procedures into multipave master degree project abiy bekele division of highway and railway engineering department of civil and architectural engineering royal institute of technology se100 44 stockholm tritavbt 11. Software development pakpave for flexible pavement design. The 1993 aashto guide for design of pavement structures. This is a proprietary aashtoware computer software product. Design guide for concrete local roads and streets v1 ncdot. It allows compliant concrete pavement designs to be completed in minutes with our unique design analysis tools showing the designer at a glance the optimum concrete pavement thickness. Aashtoware pavement me design is a mechanisticempirical pavement thickness design software that was formerly known as the mechanisticempirical pavement design guide mepdg and darwin me. Aashtoware pavement me design is available for license to agencies with membership or associate membership in aashto and to other entities located in the united states. Othis means the designer now will be more involved in the design and. Pavement interactive is a free online knowledge base for the paving industry. While the standards contained in this manual provide a basis for uniform design practice for typical pavement design situations, precise rules which would apply to all possible situations are impossible to give.
Ltpp program to supplement the aashto pavement rigid design system. Pavexpress is a free online tool to create pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design process and equations. In 2010, adot contracted with applied research associates, inc. Pca, 1984, the aashto 1998 supplemental guide aashto, 1998 for rigid pavements. Aashto guide for design of pavement structures 1993. Longterm pavement performance program rigid pavement design software for the 1998 supplement to the aashto guide for design of pavement structures, part ii.
Pavia systems, with sponsorship from the asphalt pavement alliance apa and its constituent members, has developed free online pavement thickness design software called pavexpress. Guide for design of pavement structures 1993 w 1998 supplement this publication is static right now and since many states are moving to me design, there is no interest to update it. The accompanying software, aashtoware pavement me design, was released in 2011. Implementing the aashto strategic highway safety plan. Engineering software is currently unavailable for download using internet explorer. The software simplifies the process of using both the 1993 aashto design guide for asphalt pavements and 1998 aashto supplement for concrete pavements.
Trial design strategy pavement response model distresssmoothness prediction models constructability. The copy posted here is the one available on the nhi course 1064 cd fhwa, april 2002. The software only asks users for inputs required to create technically sound. Implementation of the aashto pavement design procedures.
Adot performs pavement design using the following methods. The project ran through 2004 and resulted in the mechanistic empirical. Winpas 12, which is based on the commonlyused aashto 1993 pavement design guide, has been updated to make it compatible with current windowsbased operating systems, has a new gui or graphical user interface, and includes updated help screens which make the software easier to use than ever before. Merra climate data for mepdg inputs enables users to download merra climate data in a format that is being used as an input for the aashtoware pavement me design software. Me design guide will change the way in which pavements are designed by replacing the traditional empirical design approach proposed in the aashto 1993 guide for the design of pavement structures with a mechanisticempirical based approach. Othe 2002 design guide represents a major change in the way we do design. A simplified pavement design tool county engineersmd. Winjulea this is a demo version of the software, which is under development for the aashto 2002 design guide. Campus students are required to use it for their design activities. Guide for design of pavement structures and 1998 supplement, aashto, 1993. Pavement design is primarily a matter of sound application of acceptable engineering criteria and standards. The aashto 1993 guide and the aashto mechanisticempirical design procedure pavement me, are primarily for high traffic volume roadways and not well suited to lowervolume streets and roads. Supplement to the aashto guide for design of pavement structures, part ii, rigid pavement design and rigid pavement joint design, aashto, 1998. Accessible via web and mobile free, no cost to use based on aashto pavement design equations userfriendly share, save, and print project designs.
Aashto, along with several other organizations that represent statebased highway safety agencies, has adopted a goal of halving highway fatalities within two decades. In this video, the use of software flexpave is explained that helps its user decide on depths for different layers of road pavement. Aashto rigid pavement design spreadsheet civilweb spreadsheets. Software for aashto 1993 guideline based pavement design. Pavexpress webbased scoping tool eases pavement design. Free asphalt pavement design tool concrete construction. A simplified pavement design tool new jersey asphalt pavement. For heavyduty sections expected to handle truck and bus traffic, aashto design. The civilweb aashto rigid pavement design spreadsheet completes the design of concrete roads or pavements in accordance with aashto 1998. Chapter three survey of agency pavement design practices.
It takes advantage of the advances in material mechanics, axleload spectra, and climate data for predicting pavement performance. Acpas perspective is that pavement me is currently the most comprehensive and scientific approach to developing comparable pavement designs. Pavement thickness design evolves with latest software. A simplified pavement design tool asphalt pavement association. One of the most significant changes offered in the me design guide is the difference in the method used to. The structural overlay design for arizona soda procedure. Aashtoware is built to help you comply with federal highway administration regulations, aashto standards and industry best practices, but it easily accommodates statetostate differences. The aashto design method has published guides in the years 1972, 1986, 1993, 1998 and 2004. Pdf software development pakpave for flexible pavement design. Easy to download, customize and deploy, aashtoware efficiently monitors costs, schedules, inventories, inspections, performance, displacements, and safety. Aashtoware pavement me design is the next generation of pavement design software.
Pavexpress is a free online tool to create pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design. Ppt rigid pavement design software powerpoint presentation. Development of the rpd software rpd software features and capabilities how to use the rpd software who should use the rpd software and why how to get the rpd software rigid pavement design software. A free, online tool to help you create simplified pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design process. Concrete pavement design runs, utilizing the same inputs, revealed pavexpress s thickness results were as much as 2. Chapter two mechanisticempirical pavement design guide. Each licensee shall designate a primary contact person through whom all support and maintenance will be coordinated with the contractor support team. A free online tool to help you create simplified pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design process. Recommended thickness design software for roadways.
As aashto is no longer supporting the darwin software and 1993 design guide, many agencies are grappling with how best to make the. Though the more recent aashto pavement design procedures include factors. The civilweb aashto 1993 pavement design spreadsheet is a complete design solution for the structural design of flexible roads. In 1998, revisions were made to the aashto design model for concrete pavements based on work performed under nchrp project darter, hall, and kuo 1995 and fieldvalidated using data from the longterm pavement performance ltpp gps3, gps4, and gps5 sites.
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