Create a digital model TIN with Bentley Site

Bentley Site is one of the tools within the package known as Bentley Civil (Geopak). We are going to see in this case how to create a terrain model based on an existing 3D map.

1. The data

I am using a three-dimensional file, which contains a triangulated model in which each object is a 3Dface, which Microstation calls shapes.

Tin model on microstation site

2. Project management .gsf

Create project

The .gsf files (Geopak site file) stores the information of the different Geopak applications and is a kind of binary database. To create one, do the following:

Site moedeler> Project Wizzard> Create new project> Next> give it the name “san ignacio ground.gsf”> Next

Then the project bar appears, we choose:

Project> Save

Open project

Site modeler> Project Wizzard> Open existing project> Browse

And we look for the newly created project and select Open.

3. Storing objects in .gsf

Now we require the .gsf to contain the map information, so we have to tell you what kind of objects it is.

Create new model

New Site model > we assign the name to the model "dtm san ignacio"> ok.

Tin model on microstation site

Store graphics

Site modeller> project wizzard> Import 3D graphics

In the panel that appears, we assign the name of the object, in this case "Dtm", We specify the characteristics of tolerance and type of objects, in this case as void. Could have been selected contours In case of having the contour lines, Break lines, boundaries, etc.

Tin model on microstation site

Tin model on microstation site Then with the button Select elements, we select all the objects in the view. In order not to complicate the selection, we use the block option and make a box around all the objects.

Press the button Apply, And in the lower panel the object counter is displayed in descending order, while entering them into the project.

Until now, Geopak understands that all such objects are a mesh of interconnected objects.


4. Export to TIN

Now what we require is that the created objects can be exported as a digital model (TIN), for this we do:

Export Model / Object

And in the panel we choose that what we will export will be only the object, and the type; it can be a binary or Land XML file. We choose type TIN File.

Tin model on microstation site

We also define the file name and it is possible to set a vertical offset. As we will send all the objects we do not choose a Boundary.

And there you have it, it is a matter of choosing how you want to see the TIN; With curves of level, each quantum, view or in vector, that we will see in another post.

Tin model on microstation site

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