A modern model of the city’s geodata

Saving time, open information and support to new types of business. These were the main reasons why the City of Tampere started the project of combining soil and bedrock data from different sources into a city model with GTK’s help. The result is a geological 3D model, which should also bring cost savings in construction and planning.

Sometimes we do redundant work because the material has been recorded unsystematically. Certain information might also be deemed less important although it might be important to someone else, says Geotechnology Engineer Jori Lehtikangas from the City of Tampere.

Geodata is created in cities during, for example, soil drilling, constructability surveys, heat well drilling and geophysical surveys. The CityGeoModel project of the City of Tampere and GTK lasts for two years, during which geodata from the city centre is modelled.

Making notes of the problem areas

In the future, Lehtikangas thinks that certain kinds of warnings could also be included in geodata.

If certain areas of the city are known to be problematic in terms of construction work, it should be marked in the underground model of the city for others to see. “Old map data, such as the location of an old mire area, should also be utilised. There is no point in repeating mistakes.”

“New kinds of businesses will also benefit from open geodata,” Lehtikangas adds.

Business related to soil information might not gain media attention, but this is information that is needed daily in all construction work. New opportunities for utilising geodata will also arise in, for example, the world of mobile apps or gaming industry.

In the future, it could be possible to record geodata in all situations where we need to go underground.

Pile drivers and excavators could collect information about soil. “In the current situation the important thing is that we are finally able to transfer this valuable information into a modern format,” Lehtikangas summarises.