D OTY & A SSOCIATES, LLC
   Consulting Engineers
   Golden, Colorado

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Landfill Volume Calculations


Because most designs and topographic maps are prepared using computer-aided drafting techniques, we use several software packages to rapidly extract and evaluate the data. Details of the process are as follows.


Pitkin County, Colorado

  • base maps provided or developed in AutoCad.
  • files imported to MapInfo using in-house code.
  • vertices added using another in-house routine.
  • x, y, and z extracted using VerticalMapper.
  • data gridded using VerticalMapper.
  • new grid files of the differences between the surfaces generated using VerticalMapper.
  • difference grids contoured & the volume represented by the area of the contour region determined using an in-house developed code.

Examples of the kinds of volumes that can be calculated are:

  • final cover to base of excavation (total site capacity);
  • current topography to base of excavation (volume consumed to-date)
  • current topography to last year's topography (volume consumed during the period); and
  • final cover to current topography (volume remaining).

If the limits are carefully chosen, sub-areas of these grids can be used to estimate the volume of soil remaining to be excavated or the volume available in existing stockpiles.