- Flexible Pavement Design
- Flexible Pavement Design software, free download 2020
- Flexible Pavement Design software, free download 2012
- Pavement Design Software
- Flexible Pavement Design Manual
- Calculate MSA (Million standard axles) and VDF (Vehicle damage factor) by Importing Traffic Survey Data and Axle Load Survey.
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This module is used for the calculation of MSA and VDF for the design of flexible pavement thickness. It mainly caters and follows the guidelines as specified in Relevant Indian Road Congress (IRC) Codes. This module can be used for the analysis of VDF (Vehicle Damage Factor) and MSA (Million standard axles). The information obtained can be used in the final computation of pavement layers.
MSA(Million Standard Axle), is used for Designing of the Pavement. In the Indian context, the standard axle is defined as an axle having four wheels, two on either side having tyre pressure of approximately 0.56 MPa and carrying a total load of 80 kN.
Indian Roads Congress has specified the design procedures for flexible pavements based on CBR values. These guidelines will apply to the design of flexible pavements for Expressway, National Highways, State Highways, Major District Roads and other categories of roads.
The vehicle damage factor (VDF) is a multiplier for converting the number of commercial vehicles of different axle loads and axle configurations to the number of standard axle-load repetitions. It is defined as the equivalent number of standard axles per commercial vehicle. The VDF varies with the axle configuration, axle loading, terrain, type of road, and from region to region. The axle load equivalency factors are used to convert different axle load repetitions into equivalent standard axle load repetitions. For these equivalency factors refer to IRC:37 2001. The exact VDF values are arrived after extensive field surveys.
You can easily use the MSA/VDF Module of ESurvey Trans Software for calculation of Million Standard Axles and Vehicle Damage Factor for the design of flexible pavement thickness. You can obtain these values in simple steps.
1. Enter Project Details and values for Lane Distribution Factor, Directional Distribution Factor, No. Of years for MSA Calculation and Minimum VDF in Settings. Enter the Vehicle Type and the respective codes and Axle weights.
2. Import the field data obtained from field studies along specified stretches of roads, and save it into the module.
3. The VDF (Vehicle Damage Factor) and MSA (Million standard axles) analysis report can be obtained, which can be exported to an editable excel file. This Report shows the Traffic, Rate of the Growth, VDF and MSA (Yearly and Cumulative) year-on- year for the specified period.
You can also update the Growth Rate of Vehicle manually and obtain the MSA Report. This information can be used to compute the Flexible Pavement Design.
Help
In this module of ESurvey Trans, you can Calculate MSA (Million Standard Axles) and VDF (Vehicle Damage Factor) by Importing Traffic Survey Data and Axle Load Survey.
First, you need to create a new file and update settings.
Flexible Pavement Design
Create a New File
To create a new file, in the File menu, click New File.
In the window that opens, Enter the name of the file and click Save.
Flexible Pavement Design software, free download 2020
Settings
To update settings, in the Main menu, click Settings.
In the window that opens, enter General settings in General Tab.
Enter the Project Name, Year of Survey, Proposed Completion Year and Default Traffic Growth (%) and click Save.
Enter details of the Homogeneous Sections.
Note: Homogeneous sections are identified based on the reconnaissance survey and Road Inventory surveys based on the condition of the existing pavement. This survey is done mainly to identify the sections where BBD surveys are to be conducted.
Click Homogenous Sections Tab. List all section ranges for Overlay and New Construction Segments and Click Save to save the details.
Click VDF and MSA Tab. Enter values for Lane Distribution Factor, Directional Distribution Factor, No. of years for MSA Calculation and Minimum VDF and Click Save to save the details.
For doing the MSA/VDF analysis, In Main Menu, click MSA/VDF.
In the VDF Analysis window that opens, click the Direction 1 Tab. Input Data for Direction 1.
Before you enter the Direction 1 details, you can define Vehicle Type by clicking on theCodes button.
Flexible Pavement Design software, free download 2012
Note:
The codes are to be provided in the standard formats based on their axle configuration. For example, Tandem, tridem, etc. Please refer the IRC code” irc.gov.in.037.2012” for more details
Similarly, click Direction 2 Tab and Input Vehicle data of Direction 2.
The VDF (Vehicle Damage Factor) and MSA (Million standard axles) analysis report can be obtained, which can be exported to an editable excel file.
In MSA tab, to Export MSA details, select a Year in the grid and then click on the Export button.
This Report shows the Traffic, Rate of the Growth, VDF and MSA (Yearly and Cumulative) year-on- year for the specified period.
MSA Report:
You can also update Growth Rate of Vehicle manually in the ‘Vehicle Group Growth rate’ window. In the VDF Analysis Window, in MSA Tab, click Growth Rate button.
In the window that opens, you can Select Year, Select All, or select Vehicle Type and manually enter values for Growth Rate. Then click Update and obtain the MSA Report.
To know more about the terminology and guidelines used in MSA and VDF Analysis for flexible pavement design, Click here
Pavement Design Software
MSA and VDF Analysis - Design Pavement Thickness
Flexible Pavement Design Manual
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