The pavement construction information can be defined for various lengths of the pavement by reference to the station numbers. Elmod reports the weakest layer of failure, residual life and determines the optimum. Calback contains specific features pertinent to california and is designed to work standalone, or in concert with the flexible pavement design and analysis software calme. Bituminous testing spreadsheet version 2, xlsm 400 kb if you have data in a version 1 spreadsheet and would like it updated to version 2, contact bruce. Falling weight deflectometer the falling weight deflectometer fwd is a nondestructive testing device used to complete structural testing for pavement rehabilitation projects. Pavexpress webbased scoping tool eases pavement design based on industry standards, new webbased tool aids in specifying technically sound pavements. Click on the settings button in the pavement design window, the settings window will appear. The aashto pavement me design software continues to evolve in a way that addresses current transportation agency needs. Can someone suggest the software for back calculation of falling. In the example given, three construction types have been defined for the fwd data file. Pavement design using empirical or layered elastic methodology for. The dynatest falling weight deflectometer fwd applies a dynamic load that simulates the loading of a moving wheel. Software for pavement analysis and design pavement research center of excellence department of civil and environmental engineering michigan state university. A force pulse is applied to the road surface by a specially designed loading system which represents the dynamic shortterm loading of a heavy wheel load 1 esa.
The user must define a length of pavement associated with each construction type. Pcase software is considered public information and is therefore free to all users. Falling weight deflectometer area wsdot developed fwd area, a software program that takes dynatest fwd field program output files, sensor offsets, pavement material type, temperature correction factor, plate radius, and geographic information as inputs. Falling weight deflectometer fwd testing devices, backcalculating inplace.
Also, within the fps 21 software, the designer can opt. The falling weight deflectometer fwd is a device that is used to evaluate pavement and pavement layer stiffness. Pavement designanalysis software university of idaho. By leveraging recent information technology enhancements, pcase. Advanced tools such as monte carlo simulation and finite elements can enhance the depth and scope of pavement analysis and design calculations. The fwd has been developed from the deflectmetre a boulet originally devised by bretonniere in 1963. Elmod analyzes the pavement response from the fwd and hwd by determining the modulus, stress and strain of each significant layer. Using fwd andor destructive testing, analytical pavement design and overlay design can be carried out using stateoftheart software packages. Fwds are also useful to help design a pavement structure or repair plan through a detailed analysis of a specific section of road. Hence, the effect of different pavement materials, strengths, load or complex load mixes can quickly be explored. Pavers software for backcalculating fwd deflections, determine airport pavement loadcarrying capacity acnpcn, for analytical design of roads, industrial.
Falling weight deflectometer for pavement management. The tonn program is an excel spreadsheet that is used by district personnel to automate the tonn method. A falling weight deflectometer fwd is a testing device used by civil engineers to evaluate the physical properties of pavement. Chapter five data analysis falling weight deflectometer. Pavia systems, with sponsorship from the asphalt pavement alliance apa and its constituent members, has developed free online pavement thickness design software called pavexpress. Backcalculation of moduli in fwd evaluation of pavements. The washington state dot has developed a layered elasticbased software package called the everseries pavement analysis programs sivaneswaran, pierce and mahoney, 2001.
The rosy design, a backcalculation software for both road andor airport data analysis. Newly added with this version is jointed plain concrete overlay designs for all six types bonded on ashpalt, unbonded on asphalt, bonded on concrete, unbonded on concrete, bonded on composite, unbonded on compsosite. The manufacturers of fwds can supply own backcalculation softwares. The importance in supplying safe and stable equipment and the newest technology forms the basis of the fwd equipment. Pavement design highway users have an increased awareness of pavement quality. Aashtoware pavement me design is a pavement design software, which builds upon the mechanisticempirical pavement design guide, and expands and improves the features in the accompanying prototype computational software. Pci is a fullservice pavement engineering company that provides comprehensive pavement evaluation services, including visual condition surveys, nondestructive deflection testing using a heavy falling weight deflectometer, and coringboring and materials testing. Layered elastic analysis everstress fwd pavement modulus backcalculation evercalc. The equipment uses up to nine seismic geophones to measure the deflection of the road pavement under the application of a. For most flexible pavement design work, especially highervolume highways 10,000 adt, 5 m esals, the flexible pavement design system fps 21 is the required method for designing flexible pavements. This report documents a study conducted to investigate the use of the falling weight deflectometer fwd as part of mechanisticempirical pavement design and rehabilitation procedures incorporated within the mechanisticempirical pavement design guide mepdg. This contains two methods of pavement overlay design. Global pavement testing, analysis, and design jils. The pavement transportation computer assisted structural engineering pcase software program saves time by incorporating all transportation criteria into a userfriendly computer format for designing and evaluating transportation systems, including airfields, roads, and railroads.
Calback is a software developed by caltransucprc to backcalculate layer moduli of flexible and rigid pavements using fwd deflection data collected from existing pavements. Cloudbased pavement design software rubicon toolbox is a suite of tools that can greatly increase the productivity of engineers involved with pavement rehabilitation design. Pavexpress is a free online tool to create pavement designs using key engineering inputs, based on the aashto 1993 and 1998 supplement pavement design process and equations. Insitu material properties for each pavement layer and subgrade can be determined. Everseries for short contains three independent programs. Pavement evaluations, pavement rehabilitation seattle, wa. It is a complete software package that allows the modern pavement engineer to define or use calibrated performance models and failure criteria for all pavement layers and subgrade in his pavement design and hfwd assessment projects. The rosy design, a backcalculation software for both road andor airport data. A mechanistic computer program pavement interactive. Airport design software supports pavement design and pay reductions for airport pavement projects. Index using falling weight deflectometer data with mechanistic. Faarfield stands for faa rigid and flexible iterative elastic layered design.
Falling weight deflectometer, fwd, pavement evaluation mastrad. It reports the layer of failure and residual life by utilizing the lcca module which allows the user to select the optimum rehabilitation alternatives. Pavement me design software formerly known as darwinme. Streetpave 12 is the latest in jointed plain concrete pavement thickness design. The precedent design method is given in the transit supplement to the austroads pavement design guide. Aashtoware pavement me design is the next generation of aashtoware pavement design software, which builds upon the mechanisticempirical pavement. The fwd is a versatile and important tool that can be useful in the management of an entire road network for the purpose of maintenance and repair planning. Pavement thickness design evolves with latest software. Most fwds are either trailertowed or vehiclemounted systems. It needs to be shown on the summary and proposed typical section, dont assume the designer knows that it is needed. The software simplifies the process of using both the 1993 aashto design guide for asphalt pavements and 1998 aashto supplement for concrete pavements. However, files generated from the equipment can be applied in any other backcalculation program. It is a trailermounted device that operates by dropping a weight on to the pavement and measuring the resulting pavement deflections.
Falling weight deflectometer fwd the fwd unit is designed for network and project level assessment of roads subject to daily vehicular and commercial transport. Pavers premium pavement design software with powerful. Falling weight deflectometer fwd structural analysis of pavements. Rubicon toolbox is a suite of tools that can greatly increase the productivity of engineers involved with pavement rehabilitation design. Backcalculation generates backcalculation inputs from falling weight deflectometer fwd files to the software for rehabilitation design. The pcase program engineer research and development. Analysis software for our global fwd products jils in california. Extensive studies have been done on backcalculation of moduli associated with the falling weight deflectometer fwd evaluation of road and airport pavements. Open esurvey civil tools interface click on new file menu under file menu 2. Daps software deflection analysis of pavement structure. Using falling weight deflectometer data with mechanistic. Go to the main menu and click on the pavement design option 4. The mepdg is designed to update the 1993 aashto guide for design of pavement structures, which is primarily based on empirical observations from the aasho road test that began in the 1950s. Hq pavement design provides technical assistance and oversight of the pavement type selection process asphalt versus concrete and other pavement investment decisions.
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