Ground Modelling
We often integrate CAD technology into both our factual and interpretive reports to improve the analysis and presentation of geotechnical and geo-environmental data and make them more understandable for clients.
Our core system comprises HoleBASE II and KeyHOLE V under AutoCAD Map3D 2009 which provides a combination of reliable data management and good design capability integrated with a robust geographical information system (GIS).
HoleBASE II functions as a borehole archive, containing borehole data accumulated from projects dating back over fifteen years.
KeyHOLE V is Key Systems borehole interface software which links HoleBASE data with CAD to facilitate the drafting of slope sections and performing volume calculations and other ground modelling functions.
By utilising HoleBASE, desk studies and current site investigation data can easily be linked for clearer interpretation and assessment. The drawings, plans, logs, graphs and images which appear in the final report can therefore be produced accurately, quickly and to a high standard.
Applications may be illustrative, such as showing the gradient and position of a cutting or the position of a building interpolated into a slope, mathematical, perhaps calculating extraction volumes for quarrying or design based for the production of a conceptual site model to illustrate particular ground or environmental characteristics.
CAD technology is also used to illustrate the accurate location of fixed points mapped within a site. Using OS Map co-ordinates and GPS captured data which relates to site set out, the position of water wells or mineshafts and optimum drilling positions can easily be recorded and mapped.
Historical maps, topographical survey data and scanned aerial photographs can also be overlaid to show the position of previous buildings or services and therefore the historic development of a site can be better and more accurately understood.
Importantly, the location and extent of any previous land fill, spoil or made ground can also be accurately mapped, as can the position of historic service channels such as drainage which may act as migration pathways for landfill gas, groundwater or inorganic contaminants.
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