DRIP performs hydraulic design computations for the subsurface drainage analysis of pavements. XML Validator checks for most of the errors present in the xml files. 
It can also check for recommended ranges for data values MapME creates ME Design project files (DGPX) seeded with geospatially-referenced information relevant to the analysis and design of your pavement.File and analysis APIs Tools include JULEA and ICM.Calibration Assistance helps with local calibration efforts so the user can determine whether there is any bias in the predictions establish the cause of any bias if found through the calibration process and optimize the calibration coefficient of the transfer function(s) for each distress to eliminate bias and minimize the standard error of the estimate.rePave Scoping Tool provides guidance for deciding where and under what conditions to use existing pavement as part of roadway renewal projects and.
Aashto pavement design software software#
Backcalculation Tool generates backcalculation inputs from Falling Weight Deflectometer (FWD) files to the AASHTO Pavement ME Design software for rehabilitation design.#AASHTO PAVEMENT DESIGN SOFTWARE SOFTWARE#
The tool is capable of analyzing raw deflection data files from three FWD testing devices: Dynatest ®, JILS and KUAB. The tool provides three major functions: pre-processing deflection data (including project segmentation), backcalculation, and post-processing of results to generate inputs for Pavement ME rehabilitation design.
#AASHTO PAVEMENT DESIGN SOFTWARE SOFTWARE#. #AASHTO PAVEMENT DESIGN SOFTWARE MANUAL#. This includes detailed information and typical values for all the required inputs and an explanation of the design standards and principles used in the spreadsheet. To do this hypothetical joint spacings can be input to adjust the equations to give a suitable result for pavement thickness.įor JRCPs the actual joint spacing should be used up to a maximum of 9m. The joint spacing was the focus of the alterations made to the original AASHTO 1993 rigid pavement design equations and for this reason the AASHTO 1998 rigid pavement design Supplement is best suited to the design of JPCPs. These climate inputs can also be input directly by the designer for use in other parts of the US or for any locations outside of the US. The CivilWeb AASHTO Rigid Pavement Design Spreadsheet includes typical climate info for more than 130 major US cities and regions. This is calculated using the below equation where f is the friction coefficient as shown for in the below table for different road foundation materials. This is typically taken as 1.0 for standard 3.66m wide concrete road lanes, 0.94 where a tied concrete shoulder is included and 0.92 for a 0.6m widened slab. This is calculated in the same way as for the Westergaard Method, the equation is reproduced below where is Poissons Ratio for concrete, typically taken as 0.15 or 0.2. This can be calculated using the below equation where E c is the concrete slabs modulus of elasticity, E b is the road foundation modulus of elasticity, H b is the road foundation thickness, k is the effective elastic modulus of the subgrade. This must be calculated for both the AASHTO Road Test constants and using the 1998 rigid pavement design supplement constants. This equation assumes a 50 reliability where W is the number of standard axles for the traffic lane considered. The updated 1998 procedure works in a similar manner to the 1993 procedure but includes for the effects of joint spacing.įor this reason it is the AASHTO 1998 supplement which powers the CivilWeb AASHTO Rigid Pavement Design Spreadsheet. This time the method was not based upon data obtained from the AASHTO Road Test but on the LTPP database NCHRP project 1-30. However, the AASHTO 1993 rigid pavement design model is still commonly used in many parts of the world and is very useful as a simple tool for evaluating required concrete road thicknesses at preliminary stage. This has since been superseded by a much more complex mechanistic design procedure known as the Mechanistic-Empirical Design Guide (MEDG). Alternatively the AASHTO design spreadsheet is included in the CivilWeb Rigid Pavement Design Spreadsheet Suite which includes 11 different pavement design methods along with a number of other useful design tools including concrete flexural strength calculators.
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