Sewer systems -
Blowing-in of sewer systems

The Blowing-in of the sewer system is curried out after its definitive breakdown. The aim of this operation is to prevent a future cumulation of underground gasses (methane), to ensure the statistic stability and to avoid a possibility of the later sewer system collapse, connected with cavern existence.

How the activity name shows, the filling of the sewer system space is done by the loose material, which the space is fulfilled by. It is possible to use a whole scale of the certificated materials but sand and some recycled materials too.