2015 - FRANCE - Water network renewal for the Château de Versailles, Paris

End-user: Syndicate for Versailles and Saint Cloud water management (SMGSEVESC)

Consulting engineers: ARTELIA

Contractor: Atlantic Travaux Publics

Length: 970m of DN700mm NATURAL pipes

Application: Drinking water 

Water pipeline renewal under Versailles main square.

In order to ensure the best technical solution for this emblematic project, our engineers used a trenchless pipe laying technique. This technique is ideal to respect urban constraints:

• Pass through dense networks in a historical area,

• Keep the nuisance caused to citizens to a minimum,

• Limit as much as possible the project duration and the operating area.

Consequently, our Natural pipes were laid by micro-tunneling. Several steps were necessary: a pilot hole was created, using a drilling machine guided from the exterior; then our pipes are assembled and pulled of the string of anchored pipes from the downstream well toward the upstream, using the drilling machine.