This empirical equation is widely used and has the following form. Aashtoware is built to help you comply with federal highway administration regulations, aashto standards and industry best practices, but it easily accommodates statetostate differences. Ncat report 14 04 flexible pavement design state of. The american association of highway transport officials aashto has published a number of design methods for both flexible and rigid pavements based on a large experimental study of pavement performance called the aashto road test. Typical 1993 aashto designs for five different regions in the u. This project ran from 2005 through 2009 and the mepdg software continued beta testing by agencies, universities and practitioners.
Selection of subgrade modulus for aashto flexible pavement design robert p. Calculate proper pavement thickness with free online tool. Thickness design on flexible pavement aashto 1993 method. Geotechnical aspects of pavements reference manual appendix c. It is a pavement engineering program which is used to analyse flexible pavement. Designing the right pavement for the job got easier thanks to pavexpress, a free. Pavement interactive was developed by the pavement tools consortium, a partnership between several state dots, the fhwa, and the university of washington, as part of their effort to further develop and use computerbased pavement tools. The software simplifies the process of using both the 1993 aashto design guide for asphalt pavements and 1998 aashto supplement for concrete pavements. Design of flexible pavement using aashto method youtube. Stand alone software version of the pavement design portion of the ce calc website. A simplified pavement design tool county engineersmd. The software is brimming with quick help buttons to assist the designer with obtaining and properly inputting the necessary information. Supplement to the aashto pavement design for rigid pavements with check for faulting. Winflex 2000 a mechanisticempirical overlay design system for flexible pavements.
Aashtoware pavement me design is the next generation of pavement design software. Determine drainage modifying factor m from table 11. Pavement designanalysis software university of idaho. The latest version of the software aashto pavement me, v1. Focusing on the use of and aashtowares pavement me design program, he also reiterated the importance of migrating away from the aashto 93 pavement design system. Lecture 37 flexible pavement design aashto method 1993. This flexible pavement software can save the precious time and avoid the errors and difficulties. 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. Aashto guide for design of pavement structures the 1993 aashto guide 1. Software tools and solutions to design concrete pavements. Performs civil engineering calculations for trafficroad geometry, surveyingearthwork, pavement, concrete floors and unit c download transportation engineering software pavement calculator 2. Aashto pavement thickness design guide when designing pavement thickness for flexible and rigid pavements, the following considerations should be used.
Pavexpress is a free, webbased tool for the structural design of flexible and rigid pavements using the aashto 93 98 supplement design guide. Software tools and solutions to design concrete pavements wcpa 2017 annual concrete pavement workshop february 15 17, 2017. For more information, refer to the flexible pavement design system fps 21. Miraspec allows the designer to perform flexible pavement structural number sn and equivalent single axle load esal calculations based on aashto american association of state highway and transportation officials 1993 design method and gravel thickness and cost savings comparisons using the giroudhan 2004 design method.
Probabilistic design of flexible and rigid pavements using aashto equations annan a. Lecture series on introduction to transportation engineering by prof. The civilweb aashto 1993 pavement design spreadsheet is a complete design solution for the structural design of flexible roads. The major purpose for applying such methods was to. Therefore, users of this document are encouraged to affirm their designs with field verification of the reinforced pavement performance, both in engineering design and economic benefits. The paveinstruct learning module is a webbased pavement design education system with video instruction by leading industry experts. Comparison between 1993 aashto pavement design guide. 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. The software only asks users for inputs required to create technically sound. Pavement calculator pavement design calculator software. This project will consist of the construction of a new flexible pavement to extend route.
Aashtoware pavement me design is the next generation of pavement design software, which builds upon the national cooperative highway research program mechanisticempirical pavement design guide. Paveinstruct accompanies pavexpress, a webbased software created to design flexible and rigid pavements using aashto 93 98. Pavexpress webbased scoping tool eases pavement design. What is cbr testing california bearing test learn more about testing the soil duration. 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. Use of the 1993 aashto guide, mepdg and historical performance to update the wsdot pavement design catalog.
A revision was not issued to formally adopt the 1993 version of aashto guide for the design of pavement structures because adot had. Contents design of flexible pavements mechanistic design approach empirical design approach mechanisticempirical design. Pavement thickness design evolves with latest software. Aashto issues revised pavement design guide aashto journal. The aim of this research is to develop software for the flexible pavement design based on the aashto, group index, and cbr. Empirical equations are used to relate observed or measurable phenomena pavement characteristics with outcomes pavement performance.
There have been two independent verifications confirming pavexpress calculates pavement designs consistent with the methodologies in aashto 93 and 98. The aashto guide for design of pavement structures aashto, 1993 is. Darwin, a comprehensive software program tied to the 1993 aashto design guide. Huang aashto guide for design of pavement structures principles of pavement design by e. Please note that the structural coefficient of the base layer 0. They help in regulating the design methods and methodologies. The aashto guide for design of pavement structures aashto, 1993 is the primary document used to design new and rehabilitated highway pavements.
Albalbissr this paper applies statistical and probabilistic methods to the design of pavements, using the existing aashto equations. Design procedures use experimentally derived input parameters that are often geosynthetic specific. Aashto design equation flexible pavements pavement performance. Use of the 1993 aashto guide, mepdg and historical.
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. This article presents the 1993 aashto guide basic design equation for flexible pavements. Pavers, this program is used to pavement design, construction evaluation. For heavyduty sections expected to handle truck and bus traffic, aashto design equations are employed. New flexible pavement design example 1993 aashto pavement. By default, the tool uses a layer coefficient a of 0. It was derived from empirical relationships at the aashto road test and therefore a hotmixasphalt base should. New flexible pavement design example 1993 aashto pavement design project name and location. The type 6 design is intended for overlays of flexible pavements only and cannot be used reliably for overlay of concrete or hmasurfaced structures on heavily stabilized bases. Based on engineering mechanics that have been validated through extensive road test performance data, the manual references aashtoware pavement me design and me pavement crafted as part of the aashto s software development program major revisions in the third edition of this manual include. Arizonas present pavement design guide was developed by the materials section in 1989 with revisions issued in 1991 and 1992. Pavexpress, a webbased pavement scoping tool that simplifies the design of flexible and rigid pavements, is also based on aashto 93. Preliminary procedure for structural design of pervious concrete pavements.
This suite of spreadsheets allows the designer to complete the structural design of flexible roads in accordance with the aashto 1993 guide in minutes. Thus, computed engineering designs and economic benefits are not easily translated to other geosynthetics. Rigid pavement design based on aashto supplemental guide reference. It supports pavements of all traffic levels, and includes modules for designing asphalt overlays, materials costing, layered elastic analysis, and more. Microsoft powerpoint 10 aashto design equation flexible 2015 author. Software development pakpave for flexible pavement design. Elliott the resilient modulus value 3,000 psi used to represent the aasho road test subgrade in the aashto flexible pavement design equation is examined. 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. From the early 1960s through 1993, all versions of the american association for state highway and transportation officials aashto guide for design of pavement. Appendix c nhi05037 federal highway administration. In this video, you will know how to design a flexible pavement with examples using aashto method and curves to make you available to. Easy to download, customize and deploy, aashtoware efficiently monitors costs, schedules, inventories, inspections, performance, displacements, and safety. Build aashto 93 design in locally calibrated for nd mepdg software.
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