Ground Modelling and Volumetrics

Ground modelling is the process of turning a topographical survey with levels and heights into a 3D contoured or triangulated map, giving a visual representation of the shape of the site measured. Using Applications in Cadd’s state of the art n4ce software, different planes of the site can be viewed to see how the land currently lies and is useful for most earthworks projects.

Volumetrics is the process by which cubic metres of land/material mass can be calculated in order to create a desired outcome, for example providing accurate areas of volumes for cut/fill balancing, or creating a mound or depression in the land to suit a client’s needs.

Contour Plan

Why do I need my site ground modelled and volumes calculated?

Ground modelling a site is used for a variety of reasons, including:

  • Assisting disputes regarding land fill or excavation. We can produce a new ground model of an area and compare it to an existing ground model to see what land has been removed or added. This can also be displayed in the form of section or profile drawings.
  • Assisting in the design of golf courses and areas of urban regeneration. We can produce a ground model of your site and then assist in the design of a proposed new 3D landscape, playing around with the proposed contours to create the look of the land. A comparison of the proposed and current ground models will then allow us to create the volumetrics between the materials available and the cut and fill material required to create the desired landscape. This is helpful for any number of rural and urban landscape projects, including golf course design and areas of urban regeneration.
  • We can produce an isopachytes analysis drawing to show areas requiring cut and fill in a colour plan using +/- symbols to show areas needing ‘fill’ (+) and areas requiring removal of material or ‘cut’ (-). This type of drawing is especially useful to view large areas of land to be re-landscaped, remediated or regenerated and giving you a better interpretation of your earthworks project.
  • Accurate volume survey calculations may be required to monitor earthworks during a construction phase ensuring that time is not wasted excavating or moving incorrect volumes of materials.

Ground modelling and volumetrics surveys can reduce delays on site and give you confidence that your money is well spent. Call any one of our experienced surveyors to discuss your earthworks requirements in the knowledge that the information we give will add value and save time on your development.

Frequently Asked Questions:

  1. What is ground modelling?

    Ground modelling is the process of turning a topographical survey with levels and heights into a 3D contoured or triangulated map, giving a visual representation of the shape of the site measured. Using Applications in Cadd’s state of the art n4ce software, different planes of the site can be viewed to see how the land currently lies and is useful for most earthworks projects.

  2. Why do I need a volumetric survey?

    A volumetric survey is required by many ground worker’s or house building companies.  By surveying a large number of points, volumes can be calculated of spoil heaps on site and calculations can be made for the required amount of trucks needed to remove the material efficiently.

  3. What is a cut/fill survey?

    This is a survey that calculates how much material needs to be brought in/removed from various areas on a site.  This is essential for efficient movement of material which is both cost effective and environmentally acceptable.