How to link wastewater structures without reaches

[ponceta]

Modelisation question :

Having two "caniveaux" directly connected to a wastewater structure. There are no reaches except for the evacuation from the wastewater structure to the network.

I need reaches to provide information of the usage_current ( clean_water )

I now use multiple geometry type (MULTIPOLYGON) to avoid this limitation but it is not supported by the actual model.

[sjib]

@ponceta "Caniveaux" - is this eg. https://creabeton.ch/fr/superstrucutures-de-routes/caniveaux-de-drainage/ (in German Entwässerungsrinne?)

      !!@ comment = "Längliches Bauelement mit geschlitzten Öffnungen zur Aufnahme von abfliessendem Oberflächenwasser"
      Entwaesserungsrinne,
      !!@ comment = "Längliches Bauelement mit geschlitzten Öffnungen zur Aufnahme von abfliessendem Oberflächenwasser mit Schlammsack. Dieser ist dort, wo der Regenabwasserkanal wegführt, also beim Abwasserknoten und Deckel."
      Entwaesserungsrinne_mit_Schlammsack,

For this we are createing a manhole with function = Entwaesserungsrinne / drainage_channel / rigole_de_drainage (or the same with depotoir: rigole_de_drainage_avec_depotoir

usage_current for this will then be calculated from the leaving reach by TWW

Or are there cases where this is not matching?

If you have two "canniveaux" at the same point, can't you just draw one geometry with an edge at the point of the wastetwater node? Finally they need to somehow touch that node also if there are parts going in different directions as in your photo above.

Or how is the close-up situation?
What should be respresented by the detailed_geometrie?

• What you see on the surface?
• Or the whole structure including a possible short pipe below the ground?
• ??

What is the experience on this from others?

[ponceta]

The question is more about having "virtual" reaches to connect the two/three wastewater structures.

Because as you said the simplest solution is to create two dedicated wastewater structures connected to the downstream chamber, but for now, we can't connect wastewater structures without reaches.

That's a single case over thousands wastewater structures so it is maybe an exception?