Inline Structure (DAM, Weir and Gate) Modelling Using HEC-RAS1D Model

[@غسانسليم-س3ح]

Thank you very much.

[@sharansharma1]

Its for steady flow conditions, can we do it for unsteady flow?

[@HydroAI2024]

Yes, of course you can use for every flow conditions

[@InêsAzevedo-b9i]

Hello, how do I model a labyrinth weir?

[@HydroAI2024]

Hi, It's difficult to model a labyrinth in hec-ras 2d, however you can use some modification on Terrain model and create your weir and then run the 2d model

[@InêsAzevedo-b9i]

@@HydroAI2024 Hi, thank you very much for your answer. I don´t have a Terrain model. I used Civil 3D to export to Hec Ras and selected only an alignment and a group of sample lines. It´s not possible to use the "Inline structure data" for a labyrinth?

[@HydroAI2024]

@@InêsAzevedo-b9i Hi, As i mentioned you should create a DEM and then create your weir on that

[@InêsAzevedo-b9i]

​@@HydroAI2024 Thank you. I have just started to learn how to work with hec-ras... it´s all new for me at this point :)

[@HydroAI2024]

@@InêsAzevedo-b9i do not worry, if you look on my channel's videos and then you can be a master in working with HEC-RAS