By American Association of State Highway and Transportation Officials
This guide presents the road group with a state-of-the-practice research device for comparing pavement constructions utilizing mechanistic-empirical ideas, utilizing venture particular site visitors, weather, and fabrics info for estimating harm accumulation over a unique pavement provider lifestyles. This guide is acceptable to designs for brand spanking new, reconstructed, and rehabilitated versatile, inflexible, and semi-rigid pavements. functionality and misery predictions versions are used to help the pavement clothier in picking the specified pavement part.
Content:
entrance subject
• record of Figures
• checklist of Tables
• Preface
• desk of Contents
1. advent
2. Referenced files and criteria
three. value and Use of the MEPDG
four. Terminology and Definition of phrases
five. functionality Indicator Prediction Methodologies
6. Hierarchical enter degrees - picking the enter point
7. basic undertaking info
eight. making a choice on layout standards and Reliability point
nine. picking out web site stipulations and components
10. Pavement evaluate for Rehabilitation layout
eleven. selection of fabric houses for brand spanking new Paving fabrics
12. Pavement layout ideas
thirteen. Rehabilitation layout ideas
14. Interpretation and research of the Trial layout
Appendix: Getting all started with the MEPDG
Abbreviations and phrases
Index
Read or Download Mechanistic-Empirical Pavement Design Guide - A Manual of Practice PDF
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Extra resources for Mechanistic-Empirical Pavement Design Guide - A Manual of Practice
Example text
1089 log]^^^)]}, and Joint stiffness on the transverse crack computed for the time increment. , PCC compressive strength, psi, and Dowel diameter, in, Using Eq. 5-20b, the faulting increment developed using the current month is determined. m. m. Using Eq. 5-20a, the faulting at the end of the current month is determined. These steps are repeated for the number of months in the pavement design life. 58 1 Mechanistic-Empirical Pavement Design Guide More than one-third of the sections used to calibrate this prediction model were non-doweled.
A plot of measured versus predicted transverse cracking and the statistics resulting from the global calibration process is shown in Figures 5-8 through 5-10, Calculation of critical responses using neural nets (for speed) requires that the slab and base course are combined into an equivalent section based on equivalent stresses (load and temperature/moisture gradients), and contact friction between slab and base. This is done monthly as these parameters change over time, 52 1 Mechanistic-Empirical Pavement Design Guide Figure 5-8.
These calibration factors are adjustments applied to the coefficients and/or exponents of the transfer function to eliminate bias between the predicted and measured pavement distress. The combination of calibration factors (coefficients and exponents for the different distress prediction equations) may also be used to minimize the standard error of the prediction equation. The standard error of the estimate (s,) measures the amount of dispersion of the data points around the line of equality between the observed and predicted values.