Comparison of static and dynamic backcalculation of flexible. The backcalculation process is usually iterative and normally done with computer software. Iowas intelligent pavement backcalculation software. Among them, plate load test plt is frequently used in rock engineering 1. In this research, three software programs, modulus 6. The backcalculation is a userdependent procedure and produces a nonunique resilient modulus estimation. Thanks for contributing an answer to software engineering stack exchange. To calculate the section modulus, the following formula applies. Elmod analyzes the pavement response from the fwd and hwd by determining the modulus, stress and strain of each significant layer. Modcomp, backcalculation, modulus, youngs modulus, elastic properties, surface deflection, stress sensitivity 18. Modulus back analysis of pavement structure based on pso. A mechanistic computer program pavement interactive.
View and print autocad dwg and microstation dgn files. Another method for obtaining rock mass deformation modulus is back analysis. This paper presents a backcalculation analysis to evaluate pavement layer moduli by using a threedimensional numerical model developed using the flac3d finite difference software. Massplus for windows section properties calculator for. Modulus operator % it is used to find remainder, check whether a number is even or odd etc. Gophercalc was built using matlab, a software tool for analyzing and visualizing data, as part of a 2007 project, resilient modulus development of aggregate base and subbase containing recycled bituminous and concrete for 2002 design guide and. The modulus is the remainder of the euclidean division of one number by another. A check digit according to modulo 10 is used by ean codes, e. Figure 53 decrease in modulus vs vertical strain for five 5 subgrade soils in florida figure 54 low strain ultrasonic test device to determine the poissons ratio of unbound materials list of tables table 1 typical values of poissons ratio table 2 backcalculation of. Layered elastic analysis everstress fwd pavement modulus backcalculation evercalc.
Daps deflection analysis of pavement structures backcalculation of layer stiffness from deflection data using the singular value decomposition technique program installation the program is supplied on a single cdrom or via the internet. Professional trading and exchange solutions by modulus. Campus students are required to use it for their design. Given two numbers, a the dividend and n the divisor, a modulo n abbreviated as a mod n is the remainder from the division of a by n. This is important and mandatory for auddis users as entries with incorrect account numbers are usually rejected either by bacs or the receiving bank and returned as unpaid or unapplied. Some theoretical and experimental data of pavement deflection are selected to test its performance. Index backcalculation of layer parameters for ltpp test. There are six calculation libraries and different combinations are loaded by default when you open a particular test type. In addition to backcalculation based models, models were developed based on the independent variables such as surface curvature index sci and base damage index bdi. Can someone suggest the software for back calculation of falling. For over 20 years, modulus has provided financial software and hardware systems that keep global leaders and entrepreneurs ahead of the curve. Total windows program which can run under win9, winnt and win2000. Calculate section properties moments of inertia, section modulus, etc.
Calculating the bulk modulus of a fluid application center. Precision of elastic moduli prediction using backcalculation. This report provides a users manual for the new windows version of modulus 6. This page lists the cross section properties calculated by shapedesigner saas software. This is a proprietary aashtoware computer software product. Evaluation of poissons ratio for use in the mechanistic. There are many programs and methods that can be used to estimate the inplace elastic modulus values of pavement structural. However, you see in the calculation that in order to size a beam appropriately, the section modulus, s, is a critical variable. For instance, 9 divided by 4 equals 2 but it remains 1. Substantial improvements have been made to the programs, data editing, and segmentation routines. Backcalculation is a mechanistic evaluation of pavement surface deflection. In this method, test condition is simulated by the help of numerical software. If you prefer, you can configure the system to always include all the calculations from.
Most backcalculation software does not produce the same layer moduli from the identical. Since 1997 modulus has been a leading provider of white label financial technology products and services including trading platforms, financial charting, technical analysis, exchange engines, quote servers, web, mobile, and desktop development tools and more including software development services and hosting. Jul, 2014 i dont know how solidworks handles this question, but i would go back to my textbook and use the parallel axis theorem. Can someone suggest the software for back calculation of falling weight deflectometer observations. The faas backcalculation program, bakfaa, can be downloaded from the faa website and can be used to analyze ndt data, subject to the limitations discussed herein. The principle and implementation process of the method is detailed. To alleviate this limitation, this paper focuses on the recent development of a systematic backcalculation protocol for subgrade resilient modulus using modcomp6 software. But avoid asking for help, clarification, or responding to other answers. Consistency and accuracy of selected fwd backcalculation. This would be helpful for understanding the rsa, elgamal and some basic modulus. Another advantage is that because of the bending stiffness of the rail, the ballastsubgrade conditions are averaged out over the affected track section. Several static and dynamic backcalculation programs use the deflection profile to perform backcalculation analysis for determining the in situ elastic modulus.
These unrealistic moduli generally occurred for the more extreme type ii deflection basins see figure 7. Backcalculation of soil modulus from pfwd based on a. Can someone suggest the software for back calculation of falling weight. Best magic show in the world genius rubiks cube magician americas got talent duration. Geometrical information along with material characteristics are applied to the model. By doing this, tensile tests determine how strong a material is and how much it can elongate. The faas back calculation program, bakfaa, can be downloaded from the faa website and can be used to analyze ndt data, subject to the limitations discussed herein. Therefore, the backcalculation of pavement layer moduli from laboratory scale model testing has been a focus of recent pavement research. The software out put is not available in terms of existing moduli of pavement layers. Backcalculation of layer parameters for ltpp test sections. These calculated section properties are grouped by categories in the tables below. I dont know how solidworks handles this question, but i would go back to my textbook and use the parallel axis theorem.
The major additions to this system are routines to. To alleviate this limitation, this paper focuses on the recent development of a systematic back calculation protocol for subgrade resilient modulus using modcomp6 software. For the purposes of determining pavement layer moduli, rigid or asphalt. Since 1997 modulus has been a leading provider of white label financial technology products and services including trading platforms, financial charting, technical analysis, exchange engines, quote servers, web, mobile, and desktop development tools and. Six programs were selected for detailed evaluation elcon and eliback for rigid pavement, and issem4, modcomp3, modulus and wdef for. Understanding the modulus operator % stack overflow. A basic flowchart patterned after lytton, 1989 1 that represents the fundamental elements in all known backcalculation programs is shown as figure 1. For instance, the expression 7 mod 5 would evaluate to 2 because 7 divided by 5 leaves a remainder of 2, while 10 mod 5. Nov 06, 2012 best magic show in the world genius rubiks cube magician americas got talent duration. Modulus provides advanced products and services to brokerages, hedge funds, financial institutions, and professional traders throughout 94 countries. The modulo operation can be calculated using this equation.
This documentation is only for the sake of completeness. Back calculation of rock mass modulus using finite element. Systematic backcalculation protocol and prediction of. Anastasios ioannides for making backcalculation software available. Trying to find time complexity of modulus algorithm. Backcalculation can be made with softwares of other origin but usually the field database should be transformed to the data format defined in the given software.
The back calculation is a userdependent procedure and produces a nonunique resilient modulus estimation. This is a micro project for learning the fundamental of modulus calculation and encryption algorithms. The washington state dot has developed a layered elasticbased software package called the everseries pavement analysis programs sivaneswaran, pierce and mahoney, 2001 1. With the ean codes the check digit is calculated according to. It should be understood that many different software packages can be used to calculate the elastic modulus of pavement layers and subgrade soils from deflection basins, as demonstrated in report fhward97086, backcalculation of layer moduli of ltpp gps sites. This simple, easytouse moment of inertia calculator will find moment of inertia for a circle, rectangle, hollow rectangular section hss, hollow circular section, triangle, ibeam, tbeam, lsections angles and channel sections, as well as centroid, section modulus and many more results. For symmetrical sections the value of z is the same above or below the centroid.
Everseries for short contains three independent programs. A tensile test, also known as a tension test, is one of the most fundamental and common types of mechanical testing. The software is written using modern windows programming languages with this version being developed for the windows 98 operating system. However, some properties are not computable outofthe box.
Recent advances in hardware and software technology have significantly improved ndt equipment, data collection, and analysis software. Php calculation modulus 10 check digit generation stack. Aug 08, 20 therefore, the back calculation of pavement layer moduli from laboratory scale model testing has been a focus of recent pavement research. A method for modulus back analysis of pavement structure based on particle swarm optimization pso is presented. Whilst the main function is that of calculating this, the bulk modulus calculator basically allows you to input any four of the equation elements in order to be delivered the fifth one in the result. And really, only one of two variables in structural design the. This procedure covers not only the software but also. The software is set up to make available only those calculations that are applicable to the current test type. Backcalculation of flexible pavement layers moduli, using four software. And really, only one of two variables in structural design the other variable being moment, m. Find modulus remainder x % n example let x 27 and n 5.
Resilient modulus and aashto pavement design ronrnr p. Can someone suggest the software for back calculation of. A comparison of nondestructive testing backcalculation. The seed moduli are the initial moduli used in the computer program to calculate.
Now supports win 7 and win 10, mesh display, splines, plastic section modulus zx and zy, and thru autocad 2017 drawings. The noise in insitu measured asphalt pavement deflection basin is the primary cause for the difference between the theoretical deflection basin in backcalculating software and measured basin, which affects the accuracy of the modulus backcalculation. The determination of the track modulus k for the standard. The iterative search method is based on the backcalculation program making. This document is available to the public through the national technical information service, springfield, virginia 22161. It reports the layer of failure and residual life by utilizing the lcca module which allows the user to select the optimum rehabilitation alternatives. Daps deflection analysis of pavement structures is a rapid, accurate and reliable method for performing backcalculation of deflection results. How to find modulus without using modulus operator. Inclusion of the resilient modulus test rvas prompted by the need for a rational evaluation method. Key words modulus, backcalculation, layer moduli, remaining life 18. Most backcalculation software does not produce the same layer moduli from the identical inputs. Exchanges, brokerages, hedge funds, professional traders, financial institutions, and other organizations around the world rely on our technology, which reaches millions of users in 94 countries.
Modulo 10 check digit calculation for barcodes with examples. All bacs approved software packages include sort code look up and modulus checking which is applied at the point of sending the payment file to bacs. The modulo calculator is used to perform the modulo operation on numbers. More accurate modulus backcalculation by reducing noise. Abstract comparison of static and dynamic backcalculation of flexible pavement layers moduli, using four software programs.
This paper presents a back calculation analysis to evaluate pavement layer moduli by using a threedimensional numerical model developed using the flac3d finite difference software. Backcalculation of resilient modulus of lightly stabilized. Using deflection data and other pertinent information obtained from shrp. Backcalculating layer moduli, using the deflections measured by the fwd. The modulus program, a modulus backcalculation system described in this report, has been developed by the texas transportation institute for the texas. Our technology reaches over three million traders and investors around the world.
Activebarcode calculates this check digits for most codes automatically. The fwd data gathered from different test sites, including the zanjantabriz, eivanekeygarmsar and garmsarsemnan freeways and also rafsanjan. In addition to back calculation based models, models were developed based on the independent variables such as surface curvature index sci and base damage index bdi. However, the modulus obtained from these programs may vary because of different assumptions, interactive technique calculation schemes, and material models 1, 4, 7, 9 14. Calculating the bulk modulus of a fluid thermophyiscaldata.
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