Areas and Volumes


Each source element, can have a list of areas and volumes.

Each item will have the following characteristics:

  1. Raw Station - distance between start of alignment and location of cross section in alignment
  2. Area - cross-sectional area
  3. Station - Converted value of the progressive against the parameters of station equations
  4. Distance - Distance between Raw Station and Previous Raw Station, or distance between two consecutive sections
  5. CBR - California Interval Support Index (or ISC). It is obtained from the Segmentation table or the Segmentation table.
  6. Expansion - Expansion of the soil. It is obtained from the Segmentation table or the Segmentation table.
  7. Permeability - Soil permeability. It is obtained from the Segmentation table or the Segmentation table.
  8. Geometric Volume - Geometric Volume Calculated by Section Method:
    Geometric Volume(i) = Average (Area(i-1), Area(i)) * (Distance(i))

  9. Ranges - Each item of demand has maximum and minimum CBR, Expansion and Permeability. Thus, each item of source is classified in function of these values and in this column the possible demand codes are shown.

If you use Civil 3D to model the project, jot down sections and get areas, use the program DDMLINK to get the areas directly from Civil 3D, without having to use other programs.

If the area and volume tab of some source or demand be informed, click so that the volumes represented here are taken into account in the calculations of DMT and distribution.


If any value is invalid, the text will be in red, indicating the error.

Cells with yellow background, are editable. Cells with white background, are read-only.

If you need to make a report with the stations and areas of all source and demand items, click the File / Export menu Areas and please inform the location to save the HTML file.