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It can also be used to perform loss of support analysis and load transfer efficiency (LTE) calculations.ĪASHTOWare Pavement ME Design 2013 v1.3. Multilayer solutions that calculate stresses, strains, and displacements in pavement structures caused by surface loading have been in existence for several years. 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. The Iowa Department of Transportation (DOT) has been collecting the Falling Weight Deflectometer (FWD) data on regular basis. 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. (I dont care if he says 1+13, hes issuing the permit. (I was a site engineer too, I just used my pencil and an excel sheet to do the math) The municipal stormwater engineer has no idea what hes talking about. A review of the recent international developments in backcalculation of moduli reveals that the backcalculated values of moduli are software and user dependent. I cant calculate it because the software is not designed that way.
BACKCALCULATION SOFTWARE FOR PAVEMENT MANUAL
ME Design supports AASHTO"s Mechanistic-Empirical Pavement Design Guide, Interim Edition: A Manual of Practice. Extensive studies have been done on backcalculation of moduli associated with the Falling Weight Deflectometer (FWD) evaluation of road and airport pavements. Thus, this comparative study validates the applicability of approximate technique due to its simplicity and rapid calculation for structural evaluation of flexible pavement physical system.AASHTOWare Pavement ME Design 2013 v1.3.28ĪASHTOWare Pavement ME Design is a pavement design software, which builds upon the mechanistic-empirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. This variation is due to various limiting factors of different methods, thereby layer moduli estimated from the approximate method provides quick solution considering non-linearity, transient behavior, does not require any seed values. Some software packages, in addition to automatically determining the modulus of the pavement layers will determine the overlay depth for the future design traffic. Whereas, the mean variation of granular and subgrade layer moduli at all the test locations is 27.16% and 5.61% respectively. software to estimate the modulus of each pavement layer. The results of comparative analysis depict that bituminous layer moduli estimated from two techniques are in a mean variation of 32.29%. CALBACK: ENHANCING CALTRANS MECHANISTIC-EMPIRICAL DESIGN PROCESS WITH NEW BACKCALCULATION SOFTWARE Qing Lu, Ph.D. ISBN: 0309054206 9780309054201: OCLC Number: 27265241: Notes: 'Pavement design, management, and performance.' 'A peer-reviewed publication of the Transportation.
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Experimental investigations were carried out by using falling weight deflectometer (FWD) as per Indian standards on a selected two lane highway flexible pavement stretch of 20.00 km at an interval of 1.00 Km. This study made an attempt in comparing two techniques namely radius of curvature method using ELMOD 6.0 program, and analytical method that adopts mathematical adaptive technique using Boussinesq’s formulae with Odemark’s consecutive three-layer system for estimating pavement layer moduli. Therefore, selection of appropriate backcalculation technique and thereby identifying the optimum value of pavement layer moduli is a daunting task in the current scenario. ELMOD6, developed by Dynatest is the backcalculation software used. The tool is capable of analyzing raw deflection data files from three FWD testing devices: Dynatest, JILS and KUAB. Pavement Backcalculation process is mathematically an indeed complex inverse problem that can be approached deterministically or probabilistically for the realistic estimation of pavement layer moduli using Non-destructive testing devices. the evaluation of high stiffness pavement structures as the calculated deflections. Backcalculation Tool generates backcalculation inputs from Falling Weight Deflectometer (FWD) files to the AASHTO Pavement ME Design software for rehabilitation design.