The Experts below are selected from a list of 255 Experts worldwide ranked by ideXlab platform

D J Swan - One of the best experts on this subject based on the ideXlab platform.

  • Forecasting Traffic Loads for Mechanistic–Empirical Pavement Design
    Transportation Research Record, 2011
    Co-Authors: Jerry J Hajek, John R Billing, D J Swan
    Abstract:

    An overview looks at issues affecting forecasting of traffic loads for Pavement Design with the Mechanistic-Empirical Pavement Design Guide methodology. The establishment of reliable observed traffic data has recently received considerable attention. However, relatively little attention has been paid to the necessary task of projecting observed historical traffic data to future years. The three hierarchical data input levels of the Design guide apply not only to the observed traffic data but also to the forecasting of traffic data throughout the Pavement Design period. The forecasting effort should be commensurate with the hierarchical input levels. The topics related to forecasting of traffic loads for Pavement Design include forecasting of truck volumes, changes in truck types, and axle load spectra; the use of axle load spectra in the forecasting process; and the estimation of maximum traffic volumes that highways can carry. The main trends affecting future traffic loads include economic conditions, re...

Carl L Monismith - One of the best experts on this subject based on the ideXlab platform.

Jacob Uzan - One of the best experts on this subject based on the ideXlab platform.

  • A Pavement Design AND REHABILITATION SYSTEM
    Transportation Research Record, 1996
    Co-Authors: Jacob Uzan
    Abstract:

    Because the Superpave system is not readily available for use, an interim Pavement Design and rehabilitation method was developed that can be used for Israeli traffic and environmental conditions. The existing method was upgraded to include most of the relevant available information and to produce reliable Pavement Design for the specific conditions in Israel. The upgrading concentrated on multiple topics. An axle-load distribution specific to Israeli conditions was included because analysis indicates that axle loads in Israel are typically above the standard 80-kN single axle load. The extended California bearing ratio (CBR) method was adapted to a variety of axle-load combinations by using Miner's law for damage accumulation. Converting the axle-load distribution to the standard 80-kN equivalent single axle load leads to underDesign of approximately 10 percent in Pavement thickness (or to a reduction of about 70 percent of the Design life). A fatigue consideration to determine the asphalt-layer thicknes...

Jerry J Hajek - One of the best experts on this subject based on the ideXlab platform.

  • Forecasting Traffic Loads for Mechanistic–Empirical Pavement Design
    Transportation Research Record, 2011
    Co-Authors: Jerry J Hajek, John R Billing, D J Swan
    Abstract:

    An overview looks at issues affecting forecasting of traffic loads for Pavement Design with the Mechanistic-Empirical Pavement Design Guide methodology. The establishment of reliable observed traffic data has recently received considerable attention. However, relatively little attention has been paid to the necessary task of projecting observed historical traffic data to future years. The three hierarchical data input levels of the Design guide apply not only to the observed traffic data but also to the forecasting of traffic data throughout the Pavement Design period. The forecasting effort should be commensurate with the hierarchical input levels. The topics related to forecasting of traffic loads for Pavement Design include forecasting of truck volumes, changes in truck types, and axle load spectra; the use of axle load spectra in the forecasting process; and the estimation of maximum traffic volumes that highways can carry. The main trends affecting future traffic loads include economic conditions, re...

Joe Leidy - One of the best experts on this subject based on the ideXlab platform.

  • Reliability-Based Mechanistic–Empirical Flexible Pavement Design
    Transportation Research Record, 2014
    Co-Authors: Fujie Zhou, Tom Scullion, Joe Leidy
    Abstract:

    It is well known that Pavement Design and construction involve many uncertainties and variations from specified Design parameters. To address this issue, a reliability concept is often incorporated into the Pavement Design and analysis process. However, because of the complexity of modern mechanistic-empirical approaches, most of the existing reliability analyses deal only with some overall variability. A genuine reliability analysis considering the variability of specific input parameters is often computationally prohibitive. After a review of reliability approaches used in existing Pavement Design systems, Rosenblueth's 2n + 1 method is recommended as a good candidate for modern mechanistic-empirical Pavement Designs. Implementation of Rosenblueth's 2n + 1 method in the Texas Mechanistic-Empirical Flexible Pavement Design and Analysis System shows the simplicity and practicality of this approach. A pilot comparison demonstrates that this approach can make rational predictions considering the variability...