Objective: insert a dam in a topography

Starting data: level curves in DXF format and a simple model of a double curvature dam, created previously with GiD

Files->Import->DXF

and select the file 'topography.dxf'

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Lines imported from dxf

Create an auxiliary mesh to have nodes to calculate an approximated raster to represent the terrain surface

Mesh->Generate mesh...

and select default mesh size.

Now we can create the surfaces of the raster.

Create first a new layer, and set as layer to use to separate our surfaces, and then create the raster surfaces.

Geometry->Create->Geometry from mesh->Nodes to grid surfaces

set a raster cell size of 50, and select all mesh nodes

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Raster surfaces

The raster is a rectangle fitting the bounding box of the selected nodes, probably the shape of squares far of data nodes is bad and does not represent anything.

Now insert the model of the dam

Files->Import->Insert GiD model...

and select the file 'dam.gid'

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Zoom near the dam