![]() ![]() ![]() To order the 2021 edition of the Materials Standards guide, visit the AASHTO Store or click here for a direct link. The 2021 edition of the Materials Standards guide includes 12 new and 52 revised standards – a downloadable summary is available by clicking here – with each standard’s designation number, title, technical section number, and balloted revisions included. The newest update to LTPPBind performed in September 2018 includes a change to the degree-day. Climate input options include MERRA-2, LTPP sites, or user defined data. To make it easier for users to track updates and search for specific standards, AASHTO organized its Material Standards volumes by standard type: M and R standards in one volume T standards in another and MP, PP, and TP standards in the third. LTPPBind Online provides a tool for highway agencies to investigate asphalt binder Performance Grade (PG) ratings in accordance with AASHTO M320-10 and AASHTO M332-14 standards. “It is now both a simpler and more powerful pavement material design tool.The American Association of State Highway and Transportation Officials has released the 2021 edition of its Standard Specifications for Transportation Materials and Methods of Sampling and Testing and AASHTO Provisional Standards, commonly referred to as the “Materials Standards” guide.ĭeveloped by the AASHTO Committee on Materials and Pavements, the Materials Standards guide contains specifications, test methods, and provisional standards commonly used in the construction of highway facilities.ĪASHTO is returning to a single annual release of the standards, rather than three separate annual updates, for the 2021 edition – with the PDF Download format of the guide released each year in July followed by the paperback format in September. “Overall, we’ve made Pavement 3.0 easier to use for both new and experienced engineers,” Platte said. That removes the chance for human computational errors as well as the need to visit multiple external websites to obtain specific climate data. That automatically provides users – based on longitude and latitude inputs – with regional climate data affecting pavement design specifications, alleviating the need for manual entry of such climate-based information. AASHTOWare entered into an agreement with the FHWA that allows Pavement 3.0 to tap directly into its climate information database. Pavement 3.0 now also features direct integration with Federal Highway Administration climate data. Those permission features “lock down” pavement design parameters – which can often run into the hundreds of packages – eliminating the potential for mistakes. Recommendations This software is limited to the flexible pavement design based on the AASHTO, Group index, and CBR methods so it can further be extended for Asphalt institute design method and Road Note 31 as well as for the rigid pavement design. “This makes it far simpler for engineers to gain access.”Īnother key improvement to the Pavement 3.0 package concerns user permission features, which govern access to critical design specification data within the software. AASHTOWare Pavement ME Design no longer has to be installed on a state DOT server and managed by a state DOT’s information technology department,” he said. “Pavement 3.0 is a cloud-based software package, meaning that if you have a license to use the software, you can visit our website and log in to use it. “What makes Pavement 3.0 so special is that it is a web-based version,” explained Keith Platte, director of AASHTOWare. ![]() ![]() formed in accordance with AASHTO T 256 and the FHWA Field Operations Manual (FHWA, 1998). It calculates pavement responses ( such as stresses, strains, and deflections) based on traffic, climate, and materials parameters to predict the progression of key pavement distresses and smoothness loss over time for asphalt concrete and Portland cement concrete pavements. software was submitted in April 2007 to the NCHRP, FHWA, and AASHTO. The American Association of State Highway and Transportation Officials recently issued AASHTOWare Pavement ME Design 3.0, the latest version of its core pavement design software platform.ĪASHTOWare – which offers a suite of transportation software products delivered through a collaborative business model with state departments of transportation across the country – upgraded its pavement design package to make it easier to use as well as offer improve design specification protections.ĪASHTOWare Pavement ME Design is a software tool designed to support the day-to-day operations of public and private pavement design engineers. ![]()
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