North Dakota implementation of mechanistic-empirical pavement design guide (MEPDG).
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2014-12-01
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Abstract:North Dakota currently designs roads based on the AASHTO Design Guide procedure, which is based on ; the empirical findings of the AASHTO Road Test of the late 1950s. However, limitations of the current ; empirical approach have prompted AASHTO to move toward the new mechanistically based pavement ; design procedure described in the Mechanistic Empirical Pavement Design Guide (MEPDG), which was ; released to the public for review in 2004 under NCHRP Project 1-37A. MEPDG combines mechanistic ; and empirical methodology and provides more realistic characterization of in-service pavements. Its ; mechanistic approach is both more thorough and more computationally complex than the existing ; AASHTO design method, and as a result the method can require an extensive number of detailed ; material, foundational, traffic, and environmental inputs. This and other factors can present a challenge to ; agencies wishing to implement the new method. ; Because AASHTO has adopted the MEPDG and highway agencies across the nation are moving towards ; its implementation, it is critical that North Dakota becomes familiar with the MEPDG documentation and ; software and identify input data requirements for design. This report summarizes the findings of MEPDG ; implementation in North Dakota, identifies input data needs and research steps of the MEPDG ; implementation in the state and also prepares North Dakota for successful implementation of the MEPDG ; statewide.
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Main Document Checksum:urn:sha-512:3332c33a0d92489a6b12beaf735b90f4e6ea5af0f8ca97b5cc36e06f0dde8ff29275d69cdfcb4424a55018718f3247ead4cec3160e9889604781811769c8c8fe