Mechanistic empirical pavement design software

Chapter two mechanisticempirical pavement design guide and. User manual and local calibration guide for the mechanistic. User manual and local calibration guide for the mechanistic empirical pavement design guide and software. This methodology is termed mechanistic empirical me pavement design, and it represents a major change from the pavement design methods. Mechanisticempirical me methods are the cornerstone of current pavement engineering practice because of their enhanced predicting capabilities. The findings were presented in a conference paper titled implementation process of pavement me design in maricopa county3 at the th arizona pavement materials conference held in november 2016.

Implementation of the aashto mechanisticempirical pavement. This paper focuses on comprehensive cluster analysis of truck traffic in new jersey for implementation of mechanistic empirical pavement design. The goal of the mechanisticempirical pavement design guide mepdg is to identify the physical causes of stresses in pavement structures and calibrate them. Aashtoware pavement me design software webinar series. Pdf calme, a mechanisticempirical program to analyze. Download a pdf of implementation of the aashto mechanisticempirical pavement design guide and software by the national academies of sciences. This revised manual provides an overview of the methodology termed mechanistic empirical or me pavement design. The mechanisticempirical me pavement design approach has recently emerged as an alternative to traditional empirical approaches. Aashtoware pavement me, commonly referred to as the mechanistic empirical pavement design guide mepdg, assumes that concrete cte is a constant value, more specifically, the cte measured under saturated conditions following aashto t 336. Aashtoware pavement me design is a productionready software tool to support the. Pavement analysis and design software pads based on the. Mcdot interim mechanisticempirical me flexible pavement. The mepdg is designed to update the 1993 aashto guide for design of pavement structures, which is primarily based on empirical observations from the aasho road test that began in the 1950s. The software pave was developed based on mechanistic empirical me principles.

Mechanisticempirical design national asphalt pavement. Mechanistic empirical pavement design guide mepdg for new pavement sections. Can anyone help me to get the mepdg software for pavement. The develpment and implementation of the superpave binder specifications and mixture design system have provided.

Assessment of flexible pavement fatigue life of turkish. The software can be downloaded for installation on a local drive in. Pavement analysis and design software pads based on the south african mechanistic empirical design method h l theyse and m muthen transportek csir, p o box 395, pretoria, 0001 introduction the trh4 structural design of flexible pavements for interurban and rural roads guideline document 1 was revised during the period 1994 to1995. Flexible pavement designs and performance predictions derived from the empirical 1993 aashto pavement design methodology and the, mechanistic empirical ncrrp project 7a approach are compared.

The design process is based on the predictive performance of a pavement section to be designed to predefined parameters identified as failing. In 2008, the american association of state highway and transportation officials published the mechanistic empirical pavement design guide. Created materials database, conducted laboratory testing, analyzed the data. An innovative approach to mechanistic empirical pavement design ronnie clark graves ii university of kentucky, clark. Mechanistic empirical pavement design mechanics is the science of motion and the action of forces on bodies. In mechanistic empirical design, the design of the pavement structure is initially assumed on a trial basis, along with inputs for traffic and climate. The online version of the mechanisticempirical pavement design guide me pdg is available to anyone with internet access who has an interest in evaluating the guide and software. Implementing mechanistic empirical pavement design and darwinme. Asphalt pavement technology has changed dramatically in the last two decades. Development of texas mechanisticempirical flexible pavement. Mechanistic empirical design asphalt pavement technology has changed dramatically in the last two decades.

To help move the implementation forward, fhwa intends to provide significant support for these efforts. Reasons for using mechanistic empirical design might include longer design life or a traffic index ti greater than 15. However, it is substantially more complex than the 1993 aashto design guide and it requires. 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. Chapter two mechanisticempirical pavement design guide.

Calme also includes these major features, which are not included in the nchrp 7a mechanistic empirical pavement design guide. The associated software program is tilted pavement me design. The online version of the mechanisticempirical pavement design guide mepdg is. The design of pavement structures historically relied on methodologies developed after experimental results, the socalled empirical methods. Mechanisticempirical pavement design method for india. Local calibration of the mechanisticempirical pavement. Mechanistic empirical design guide implementation fhwa considers implementation of mechanisticempirical pavement design a critical element in improving the national highway system. The pavement design itself is an iterative process where. Mechanistic empirical pavement design guide, november 20102 was followed during the calibration and validation process. Mechanistic empirical pavement design guide is a new method.

Fhwa considers implementation of mechanistic empirical pavement design a critical element in improving the national highway system. Truck traffic is one of the significant inputs in design and analysis of pavement structures. Mepdg software can compute how the trial design will respond. Pavement me design software and new data sources provided by state dots, into prepme database. Shariq momin senior traffic engineer arcadis linkedin. Climatic considerations for mechanisticempirical pavement design. This methodology is termed mechanistic empirical me pavement design, and it represents a major change from the pavement design methods in practice today. The study recommended, for various reasons, not to implement the mepdg as a replacement for the design methods currently being used. However, this document does not replace the need for indepth understanding and training on the mechanistic empirical pavement design process and pavement me software.

Aashtoware pavement me design is the next generation of aashtoware pavement design software, which builds upon the mechanisticempirical. Data preparation for implementing pavementme design. Texas mechanisticempirical flexible pavement design and. Educated students with the mechanistic empirical pavement design guide mepdg. It is built upon the nchrp mechanisticempirical pavement design guide. Such predicting power demands richer input data, computational power, and calibration of the empirical components against distress measurements in the. At the request of the aashto joint task force on pavements jtfp, nchrp initiated project 7a in 1996 to develop a guide for design of new and rehabilitated pavement structures. In 2002, aashto published the mechanisticempirical pavement design guide. The pavement engineering industry called for a more robust, mechanisticbased pavement design procedure that allowed designers to analyze the impacts of projectspecific subgrade, climate, materials, and traffic and determine future performance in terms of pavement distress accumulation and ride quality deterioration. Validation of the new aashto mechanisticempirical pavement design guides mepdg nationally calibrated pavement distress and smoothness prediction models when applied under utah conditions, and local calibration of the new hotmix asphalt hma pavement total rutting model, were recently completed as documented in. Evaluation of clustered traffic inputs for mechanistic. Mnpave rigid brings mechanisticempirical design to state and. Advances in technology over the recent years allowed for more complex but more reliable methods the mechanisticempirical me methods to finally be. To improve the design and performance of roadway pavements, ara, in collaboration with our industry and university teaming partners, developed the mechanistic empirical pavement design guide mepdg methodology and software as part of national cooperative highway research program nchrp project 7a.

As with other pavement design methods, close attention must be paid to the local calibration of variables within mepdg software to ensure that roads are not over. This guide and accompanying software updated aashtos 1993 guide for design of pavement structures, in which pavement design methods. Implementation and proofchecking of mechanisticempirical. Mechanisticempirical pavement design guide, a manual of practice mechanisticbased pavement design procedures incorporate factors that directly relate to pavement performance, such as traffic loadings, climatic effects, material properties, and exist ing soil conditions. The recently introduced mechanistic empirical pavement design guide mepdg and associated computer software provides a stateofpractice mechanistic empirical highway pavement design methodology. It is strongly encouraged this memo is read prior to downloading or viewing. The nserc research chair undertook the development of a me flexible pavement i3c. Dgit workshops and training mechanistic empirical design guide. Aashtoware pavement me design is the next generation of pavement design software. The structural model used for those predictions should satisfy the following requirements. Oct 02, 2012 in conventional design methods, various inputs are considered and used to produce the design requirements for the pavement structure.

Provide students advanced, indepth knowledge about the flexible pavement design. Structural response of concrete pavement slabs under. The basic advantages of a mechanisticempirical pavement design method over a purely empirical one are. In march 2004, nchrp 7 report and the mechanistic empirical pavement design guide software mepdg were released. The issue of this interim pavement design guide in october 2019 will mark the start of the use of mechanisticempirical me pavement design at maricopa county department of transportation mcdot. The fourth aashto pavement me national users group meeting last week provided engineers and other stakeholders the opportunity to discuss issues related to mechanistic empirical me pavement design. Variability and reliability in pavement design the development of mechanistic empirical design methods historically aimed at developing more accurate pavement models with a lot of emphasis on developing the deterministic or mechanistic part of the model. The mechanistic portions of the program is depend on the determination of. Mechanistic pavement design circly centre for pavement. In conjunction with the mepdg research project, software was also.

Mechanisticempirical me pavement design the michigan department of transportation mdot is currently working towards implementing the new aashtoware me pavement design software. Mnpave rigid brings mechanisticempirical design to state. Hot mix asphalt hma overlays are preferred for both flexible and rigid pavements. Mechanistic empirical me flexible pavement design is now the recommended practice in canada. Aashtoware pavement me design is the next generation of aashtoware pavement design software, which builds upon the mechanisticempirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. It is built upon the nchrp mechanistic empirical pavement design guide. Comparison of mechanisticempirical and empirical flexible. Mechanisticempirical pavement design pavement interactive. Processed traffic data using trafload software as an input for nchrp 7a software, mechanistic empirical pavement design guide mepdg for new york state department of transportation nysdot. The model should adequately describe the pavement structure constructed layers and subgrade. Mechanisticempirical pavement design guide implementation trid. The utah department of transportation udot has adopted aashtoware pavement me design software to perform pavement designs according to the aashto mechanisticempirical pavement design guide mepdg and udot new pavement design manual of instruction for all pavement designs including federal aid local government projects. Mechanistic empirical design methodology may be used on projects with approval from the office of pavement engineering in the division of pavement see hdm index 606. Mechanisticempirical pavement design guide mepdg methodology and software as part of national cooperative highway research program nchrp.

Memorandum from aashto containing project scope and information. Dec 20, 2019 the i3cme software is a software for mechanisticempirical flexible pavements design. Winflex 2000 a mechanistic empirical overlay design system for flexible pavements. The pavement design guide is provided in an adobe pdf format that is readonly, nonsave, nonprintable, and noneditable. Data collection, processing, analysis and evaluation of pavements using ltpp database for 23 pavement sections located in seven different states.

Database support for the new mechanistic empirical pavement design guide mepdg the mechanistic empirical pavement design guide mepdg developed under the nchrp 7a initiative is a significant advancement in pavement design. The michigan department of transportation mdot is currently working towards implementing the new aashtoware me pavement design software. Dgit workshops and training mechanistic empirical design. Recommended citation graves, ronnie clark ii, an innovative approach to mechanistic empirical pavement design 2012. Fouad bayomy under research contracts with idaho transportation department itd at the ui center for transportation infrastructure cti of the national institute for advanced transportation technology niatt. It can be used as 1 a txme user manual and 2 a standalone resource of mechanistic empirical me flexible pavement design training material. Read chapter chapter two mechanisticempirical pavement design guide and aashtoware pavement me design software overview. Aashtoware pavement me design is a pavement design software, which builds upon the mechanistic empirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. Planned and implemented the development of the mechanistic empirical pavement design guide aashtoware for qatar. Mnpave rigid brings mechanisticempirical design to state and local roads what was the need.

The online version of the mechanistic empirical pavement design guide me pdg is available to anyone with internet access who has an interest in evaluating the guide and software. The advent of qcqa procedures brought a recognition that control of product variation resulted in product improvement. Pavement designanalysis software university of idaho. The mechanistic empirical pavement design guide, related documentation, and the latest version of its software are available online for evaluation through 30 september 2011. Hma pavement sections and nine jointed concrete pavement jcp sections was implemented to provide data necessary for the local calibration of the mechanistic empirical pavement design software for high. The utah department of transportation udot has adopted aashtoware pavement me design software to perform pavement designs according to the aashto mechanistic empirical pavement design guide mepdg and udot new pavement design manual of instruction for all pavement designs including federal aid local government projects. Mechanistic empirical pavement design h 1 h 2 h 3 h 4 h 5 e 1 e 2 e 3 e 4 e 5. The michigan department of transportation mdot currently uses the me design method as its standard for crosssectional pavement design for new and reconstruct pavement projects. Development of texas mechanistic empirical flexible pavement design system txme 5. The mechanistic emperical pavement design guide mepdg, aashtos pavement design guide, shall be used for the design of each pavement structure. It can be used for both existing pavement rehabilitation and new pavement construction it accommodates changing load types. Implementation of the aashto mechanistic empirical pavement design guide and software. The pavement analysis and design software pads package. The mechanisticempirical pavement design guide, related documentation, and the latest version of its software are available online for evaluation through 30 september 2011.

It was created as part of the activities of the i3c research chair at laval university quebec, canada. Mechanistic empirical flexible pavement design software i3c me. This document describes a pavement design methodology that is based on engineering mechanics and has been validated with extensive road test performance data. Mechanistic empirical pavement design guide implementation. The goal of the mechanisticempirical pavement design guide mepdg. Cvl900 pavement design and management winter 2017 and 2018 instructed the aashto 1993 and aashtoontario calibration mi183 report. The same assumption applies to most if not all current mechanistic empirical design procedures for. Thus, a mechanistic approach seeks to explain phenomena only by reference to physical causes.

The majority of pavement work conducted by odot involves rehabilitation of existing pavements. Mechanisticempirical pavement design software automation. Key topics include the longstanding me pavement design guide as well as the aashtoware pavement me design program. Me pavement design is the latest generation of pavement design methodologies. The current software also includes, as reference for designers, the asphalt institute method for new pavement designs and the empirical caltrans rvalue method for both new and rehabilitation pavement designs.

In 2005, txdot initiated research 0 4714 to evaluate the mepdg for potential implementation. However, hma overlays are susceptible to fatigue cracking alligator and longitudinal. Major limitations of me design pavement performance prediction evaluation calibration verification pavements are still designed to fail. In 2002, aashto published the mechanistic empirical pavement design guide. Yet, the complexity and the costs associated with the integration of the recent american design methodmay limit the integration of this approach. 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 mechanistic empirical pavement design guide.

Mechanisticempirical flexible pavement design using i3cme. Dynamic modulus at different of bc and dbm layer at mid quintile temperature mechanistic empirical pavement design distress functions the rutting and fatigue response of the pavement with 200 mm granular subbase, 250 mm granular base, 125 mm dbm and 50 mm bc layer is studied using aashtoware pavement design software. Trbs national cooperative highway research program nchrp synthesis 457. Multiple year traffic data were collected from a large number of weighinmotion stations across new jersey. Aashtoware pavement me design is a productionready software tool to support the daytoday operations of public and private pavement engineers. Implementing mechanistic empirical pavement design. Database support for the mechanisticempirical pavement. Aashto issues revised pavement design guide informed. This site will provide progress reports as well as links to other merelated resources. Implementing mechanistic empirical pavement design and. Mechanistic empirical pavement design guide mepdg is an effort to address these limitations.