optimalisering av stikningsdata fra 3d/bim modeller - buildingSMART

Optimalisering av stikningsdata fra 3D / BIM modeller______________________
Abstract
It becomes more and more common to use 3D/BIM models as basis for setting out in the
construction industry. This is a relatively new procedure to retrieve setting out data. Much of
the challenge lies in how the models are drawn/ designed by the architect/ consultant.
The reason for this task is a 3D model (3D DWG) that are not converted to line and point
model. The model consists of solids, i.e. 3D objects that are not divided into lines. This
means that the surveying engineer on the project must “draw up” all the lines again to be
able to export this to the total station. The task will be to shed light on this issue and look at
how the communication between the different parties going on.
It has been tested retrieval of setting out data from two different programs; AutoCAD and
Gemini Terreng og Entreprenør. This was carried out without additional modules from other
companies who have developed this. Testing shows that it is possible to do this in an
efficient manner.
It is conducted interviews with selected persons in the industry for qualitative method in
order to convey experiences and thoughts about the development of BIM in the
construction industry. In the interviews the emphasis is on communication between the
various actors and how important this is to streamline the industry.
The thesis also looks closely at the consultation draft of the guide 138 from the Norwegian
Public Roads Administration and the NCC’s new BIM strategy; VDC.
The work with the thesis shows that it is possible to extract setting out data in an
efficient manner. It is also concluded that it is more beneficial to invest in
internal competence level than to purchase custom data sets for
each project. Moreover, one can see that working towards
a common BIM model will improve communication between the actors significantly.
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