[Tagging] tunnel=culvert

[Martin Koppenhoefer]

sent from a phone

> Am 25.10.2015 um 13:12 schrieb Georg Feddern <osm at bavarianmallet.de>:
> 
> At a "Düker" the water is "pressured" on a level below the normal water level through the "Düker", so there is no room above water level.


actually a Düker is a piece of U-shaped (section along the pipe) pipe, normally to cross another way (e.g. a road, a subway or another pipe), by applying the principle of communicating vessels (i.e. no pumps are needed), like a big syphon.

cheers 
Martin