- #AASHTO 93 PAVEMENT DESIGN SOFTWARE PDF#
- #AASHTO 93 PAVEMENT DESIGN SOFTWARE MANUAL#
- #AASHTO 93 PAVEMENT DESIGN SOFTWARE SOFTWARE#
In terms of fatigue damage, an increase by a factor of approximately 2 was observed for the number of load repetitions to fatigue failure whereas changing to dual tires on a single axle only causes an increase by a factor of 1.34. As the single axle is changed to a tandem axle, a major strain reduction occurred. and asphalt pavements and overlays for almost any pavement application. WinPAS is based on 1993 AASHTO Guide for Design of Pavement Structures.
#AASHTO 93 PAVEMENT DESIGN SOFTWARE PDF#
The effect of changing bus configurations has an effect on the strains as well. Download a PDF of 'Implementation of the AASHTO Mechanistic-Empirical Pavement Design Guide and Software' by the National Academies of Sciences, Engineering, and Medicine for free. A key challenge faced by engineers using the 1993 AASHTO Guide for more realistic estimates of pavement performance, and (3) 3. In comparison to the traditional dual tires (11R22.5), the super singles (455/55R22.5) were found to cause more damage (fatigue and shear) in the upper layers and it was found that the effect of tire pressure dissipates as the structure is investigated closer to the subgrade layer. AASHTO Rigid Pavement Design The elastic modulus is estimated using the Best Fit method For example, if a pavement design is evaluated over a 20. The pavement structure for each road design were ran in PSIPave 3DTM to evaluate different cases of geometry, tire types and bus configurations.īased on these findings, the greatest impact of geometry was observed in the subgrade side slope but was found to have minimal effects on the normal strains under the loading. Designs were provided for three road sections in Hamilton, Ontario using AASHTO 93, Shell and MEPDG. PSIPave 3DTM outputs the normal and shear strains anywhere in the pavement structure. This method uses three-dimensional modelling to evaluate the pavement responses under traffic loads considering the effects of road geometry and truck configuration. to evaluate the conventional design strategies in Canada using a mechanistic pavement design method, PSIPave 3DTM. University of Waterloo has partnered with PSI Technologies Inc.
MEPDG has begun to address some of these limitations, but the models have not been finalized and require local calibrations for result accuracy. Other parameters that AASHTO 93 and Shell do not address are environmental conditions, loading effects of truck configurations, road geometry, or the behaviour of materials within the pavement structure. AASHTO 93 and Shell simplify the effects of loading by using equivalent single axle loads which do not truly capture the effect of truck configurations. In Canada, American Association of State Highway and Transportation Officials 93 (AASHTO 93), Shell Pavement Design (Shell), and Mechanistic-Empirical Pavement Design Guide (MEPDG) are examples of pavement design methods. It can also be used to perform loss of support analysis and load transfer efficiency (LTE) calculations.Many methods have been used to effectively design a pavement structure that carries the required traffic loads. The tool is capable of analyzing raw deflection data files obtained from Falling Weight Deflectometer (FWD) testing devices, backcalculating in-place elastic layer moduli for flexible and rigid pavements and generating inputs for performing rehabilitation design using Pavement ME.
#AASHTO 93 PAVEMENT DESIGN SOFTWARE SOFTWARE#
The Pavement ME Deflection Data Analysis and Backcalculation Tools is a standalone software program that can be used to generate backcalculation inputs to the AASHTO Pavement ME Design software for rehabilitation design.
ME Design is a production-ready software tool to support the day-to-day pavement design functions of public and private pavement engineers.
#AASHTO 93 PAVEMENT DESIGN SOFTWARE MANUAL#
ME Design supports AASHTO"s Mechanistic-Empirical Pavement Design Guide, Interim Edition: A Manual of Practice. ***ĪASHTOWare Pavement ME Design is the next generation of AASHTOWare® pavement design software, which builds upon the mechanistic-empirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. ***AASHTOWare Pavement ME Design v2.6 is now available. ***AASHTOWare Backcalculation Tools v1.1.5 is now available.
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