For most state highway agencies, the current primary pavement design tool is the 1993 aashto guide for design of pavement structures the 1993 aashto guide 1. Please see the aashto 1993 pavement design guide for guidance. The pca method was developed based on finite element calculations of pavement stresses and. Albalbissr this paper applies statistical and probabilistic methods to the design of pavements, using the existing aashto equations. It serves as a resource for contractors, government agencies, consultants, and others in. Pavement calculator pavement design calculator software. Performs civil engineering calculations for trafficroad geometry, surveyingearthwork, pavement, concrete floors and unit c download transportation engineering software pavement calculator 2. Files download flexible pavement design excel calculator free. Aashto guide for design of pavement structures the 1993 aashto guide 1. 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. The accompanying software, aashtoware pavement me design, was released in 2011. Ncat report 14 04 flexible pavement design state of.
By default, the tool uses a layer coefficient a of 0. Huang aashto guide for design of pavement structures principles of pavement design by e. Contents design of flexible pavements mechanistic design approach empirical design approach mechanisticempirical design approach 4. For jointed concrete pavements, regardless of whether reinforced or nonreinforced, the aashtoodot method of pavement design calculates the same. The structural overlay design for arizona soda procedure. For most flexible pavement design work, especially highervolume highways 10,000 adt, 5 m esals, the flexible pavement design system fps 21 is the required method for designing flexible pavements. A revision was not issued to formally adopt the 1993 version of aashto guide for the design of pavement structures because adot had. This project ran from 2005 through 2009 and the mepdg software continued beta testing by agencies, universities and practitioners. Aastho flexible pavement design method objectives know the factors considered in the aashto design method become familiar with use of tables 20. Introduction to flexible pavement design ced engineering. 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. It takes advantage of the advances in material mechanics, axleload spectra, and climate data for predicting pavement performance. Implementation of the aashto pavement design procedures into multipave.
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. Stand alone software version of the pavement design portion of the ce calc website. Implementation of the aashto pavement design procedures into. Software development pakpave for flexible pavement. Software development for the aashto and era flexible pavement.
Aashtos mechanistic empirical pavement design guide. The 1993 aashto design guide provides nomographs for the graphical. 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. Aashto method of flexible pavement design road surface. To help agencies and contractors meet the demand for highquality pavements, napas asphalt pavement magazine regularly provides articles that directly address issues such as mix type selection and statistical specifications. Adot performs pavement design using the following methods. Aashto flexible pavement flexible pavement structural number, trial section flexible. Design of flexible pavement using aashto method youtube. Each measurement program was designed to accomplish one or more of the.
Pavement design highway users have an increased awareness of pavement quality. The overall approach of the 1993 aashto procedure for both flexible and rigid pavements is to design for a specified serviceability loss at the end of the design life of the pavement. Finally, the layer coefficient ratio for each subgrade cbr was then calculated by solving eqs. Dec 30, 2017 design flexible pavement by aashto ahmed abdelnour. In this video, you will know how to design a flexible pavement with examples using aashto method and curves to make you available to develop structure paveme. Aashtoware pavement me design is the next generation of pavement design software. The 1993 aashto guide for design of pavement structures is the only approved design method for cpcd projects.
Pavexpress webbased scoping tool eases pavement design based on industry standards, new webbased tool aids in specifying technically sound pavements. The aim of this research is to develop software for the flexible pavement design based on the aashto, group index, and cbr. The layer coefficient ratio is presented as a function of subgrade cbr. It also supplies some basic information on variable descriptions, typical values and equation precautions. The current aashto method is a regression method based on the results of road tests. Strong surface strength moisture control smooth safe friction drainage economical initial construction. Pavement thickness design evolves with latest software asphalt. See the 1993 aashto guide for details of additional procedures e. This design manual addresses methods to properly develop a rehabilitation project, pavement milling, and the computations necessary for the pavement design process. This powerful spreadsheet can be used to design flexible pavements using the pca method. Determine drainage modifying factor m from table 11. Performs civil engineering calculations for trafficroad geometry, surveyingearthwork, pavement, concrete floors and unit conversions.
In this video, you will know how to design a flexible pavement with examples using aashto method and curves to make you available to. Aashto flexible pavement design, aashto rigid pavement design, aashto. Royal institute of technology se100 44 stockholm tritavbt 11. It took a certain level of training to properly use the nomographs and other tools. It serves as a resource for contractors, government agencies, consultants, and others in the transportation infrastructure industry. New flexible pavement design example 1993 aashto pavement.
The input parameters for the baseline design using the 1993 aashto flexible procedure for new pavements are summarized in table 62. Chapter fiftyfour pavement design table of contents section page 541 general. Serviceability is defined in terms of the present serviceability index, psi, which varies between the limits of 5 best and 0 worst. It is not intended as definitive treatise, and it does not encompass the design of rigid pavements. Antonis michael frederick university notes courtesy of dr. Design methods highway pavements aashto the asphalt institute portland cement association airfield pavements faa the asphalt institute portland cement association u. Probabilistic design of flexible and rigid pavements using. The major purpose for applying such methods was to assess the variation of. Modified aashto design method for geogrid reinforced flexible pavements existing design methods for flexible pavements include.
While use of this empirical method has been successful, it has several generally acknowledged shortcomings. The flexible pavement design method presented in this guide was developed by dr. The major purpose for applying such methods was to. Pavement interactive is a free online knowledge base for the paving industry. The program uses the flexible pavement design methodology in the 1993 aashto guide for design of pavement structures. Download scientific diagram aashto nomo graph for flexible pavement design from publication. Probabilistic design of flexible and rigid pavements using aashto equations annan a. Pavement calculator pavement design calculator software cesdb. Design flexible pavement by aashto ahmed abdelnour.
Solve the aashto flexible pavement design equation, 1993 version. Unlike the aashto rigid pavement design method which is empirically based on road test data, the pca method was an early attempt at a mechanistic design method. Aashto flexible pavement flexible pavement structural number, trial section. This program enables users to design bases for interlocking concrete pavements. Implementation of the aashto pavement design procedures. In 2010, adot contracted with applied research associates, inc.
The spreadsheet breaks the design process into 10 steps and is designed to prompt the user for. Pca pavement design spreadsheet civilweb spreadsheets. Mnpave flexible minnesota department of transportation. A way that used the accepted methodology of the aashto pavement design. Contents design of flexible pavements mechanistic design approach empirical design. Design of flexible pavement using aashto method duration.
Aashto nomo graph for flexible pavement design download. The design procedures for reconstruction are similar, except that characterization of recycled materials may be required. Ncat report 1404 flexible pavement design state of. It should also be noted that in 2008, aashto released the mechanisticempirical pavement design guide. Aashtoware pavement me design is a productionready software tool to support the daytoday operations of. Stand alone software version of the pavement design portion of the ce calc. Pavement design guide for subdivision and secondary roads in virginia prepared by. Flexible pavement aashto layered analysis w nomograph. Trbs national cooperative highway research program nchrp synthesis 457. Our new and improved miraspec software is an analysis tool for engineers to design better and more costeffective flexible paved and unpaved roadways by incorporating geosynthetics. Pavement design resources flexible pavements of ohio. This is an introduction to flexible pavement design for engineers. Aashto nomo graph for flexible pavement design by a whole number from 0 to 20. New flexible pavement design example 1993 aashto pavement design project name and location.
Aashto pavement thickness design guide when designing pavement thickness for flexible and rigid pavements, the following considerations should be used. This design utility solves the 1993 aashto guide basic design equation for flexible pavements. Approximately 80% of all states use the aashto pavement design. Miraspec allows the designer to perform flexible pavement structural number sn and. Users can design aggregate, cement or asphalt stabilized, or asphalt bases. Strong surface strength moisture control smooth safe friction drainage economical initial. Aashtoware pavement me design is a productionready software tool to support the daytoday operations of public and private pavement engineers. This article presents the 1993 aashto guide basic design equation for flexible pavements. Appendix c nhi05037 federal highway administration. Total esal calculator american concrete pavement association.
This empirical equation is widely used and has the following form. Figure 715 nomograph chart for aashto flexible pavements design. The baseline flexible pavement design is a threelayer system consisting of an asphalt concrete ac surface layer over a nonstabilized graded aggregate base gab layer over subgrade sg. Engineers are cautioned that much of pavement design is governed by codes, specifications and practices of public agencies. Arizonas present pavement design guide was developed by the materials section in 1989 with revisions issued in 1991 and 1992. Army corps of engineers objectives of pavement design to provide a surface that is. Vdot pavement design guide for subdivision and secondary roads in virginia revised 2014 1 introduction this guide presents structural design methods for both flexible and rigid pavements intended for new subdivision streets and secondary roads. The 1993 aashto guide for design of pavement structures. Ncat report 14 04 flexible pavement design state of the. Ncat report 14 04 flexible pavement design state of the practice. It is built upon the nchrp mechanisticempirical pavement design guide.
Pdf software development pakpave for flexible pavement design. Designing the right pavement for the job got easier thanks to pavexpress, a free webbased pavement design scoping tool for roadway and parking lot pavements. Pavement research at the washington state university test track. Download flexible pavement design excel calculator free. This project will consist of the construction of a new flexible pavement to extend route. Pavement design guide for subdivision and secondary roads. Aashto flexible pavement design, aashto rigid pavement. The development of the software is using matlabr2008b programming language. Pavement design guide for subdivision and secondary roads in virginia a companion reference to the subdivision street requirements 2 0 0 0.
This flexible pavement software can save the precious time and avoid the errors and. Dec 14, 2017 in this video, you will know how to design a flexible pavement with examples using aashto method and curves to make you available to develop structure paveme. Pavexpress, a webbased pavement scoping tool that simplifies the design of flexible and rigid pavements, is also based on aashto 93. Nov 10, 2014 pavexpress, a webbased pavement scoping tool that simplifies the design of flexible and rigid pavements, is also based on aashto 93. Chapter two mechanisticempirical pavement design guide. Darwin, a comprehensive software program tied to the 1993 aashto design guide.
Other pavement design resources asphalt paving alliances construction checklist for parking lots this checklist is designed to help the onsite inspector or owners representative identify key aspects of parking lot construction and best practices known to produce a quality pavement project. Volume 6, the application of the wsu test track data to flexible pavement design. This project will consist of the construction of a new flexible pavement to extend route 123 to intersect with route i80 in north jersey. Use of the 1993 aashto guide, mepdg and historical. Calculate proper pavement thickness with free online tool. Structural design of interlocking concrete pavements. Software development pakpave for flexible pavement design. Christos drakos university of florida topic 7 aashto flexible pavement design 1. Software programs interlocking concrete pavement institute. The site is a repository for encyclopedic articles, news, and information on all topics related to pavements. 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 level is selected based on the amount and quality of information known about the material properties and traffic data. Engineers must always determine the requirements of the. The 1993 aashto guide for design of pavement structures is the only.