The DTM is used in close connection with another model
that describes the sub base of the street. The DEM and the
soil type model are also parts of this model. The sub base
model also includes information about the subsoil explo-
ration points, boundaries, detailed plans, pipelines,
buildings and special features.
The subsoil exploration points contain information about
ground level, storm water level, borring type, class, date
of borring, borring ending subject and results of the
exploration.
when all this is verified it will be possible e.g. to draw
cross sections showing all local soil type surfaces,
borring diagrams, underground pipelines, boundaries,
buildings and borders of the steet area in the detailed
plan.
REFERENCES
/1/ MeCullagh, M.J., Ross, C.G.: Delaunay Triangulation
of a Random Data Set for Isarithmio
Mapping.
The Cartographic Journal, Vol. "17,
No. 2 (1980), pp. 93 - 99.
/2/ Kunnallishallinnon atk-neuvottelukunta (KATKO):
Katu-atk projektin systeemikirja 8:
Maastotieto järjestelmä (1985).
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