Community
Civil 3D Forum
Welcome to Autodesk’s Civil 3D Forums. Share your knowledge, ask questions, and explore popular AutoCAD Civil 3D topics.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Hydraflow Express Culverts - Negative Invert Elevation

2 REPLIES 2
SOLVED
Reply
Message 1 of 3
iepms
891 Views, 2 Replies

Hydraflow Express Culverts - Negative Invert Elevation

I am analysing a culvert in a tidal zone which has an outlet invert level below the normal tidal range. The invert level of the culvert outler is -0.520m, however Hydraflow Express Culverts will not allow a negative invert elevation to be entered.

Does anyone know a way around this?.

 

Regards

Lar Hughes

 

2 REPLIES 2
Message 2 of 3
Matt.Anderson
in reply to: iepms

Lars -

 

The workflow would be to move the datum up such that 0 m is now 10m and all of the elevations are postive.

 

It would be advisable to use Autodesk Storm and Sanitary Analysis for tidal culverts.  It does not have the negative elevation limitation and can adequately solve tidal culverts with flap gates.

Matthew Anderson, PE CFM
Product Manager
Autodesk (Innovyze)
Message 3 of 3
iepms
in reply to: Matt.Anderson

Matt

 

Thank you very much for your reply. I will try and model this culvert in SSA. Do you know if SSA will output similar results for a culvert as Hydraflow Express - i.e. HGL's, Hw Elevation, Hw/D, results schematic and wheter the culvert flow regime is inlet or outlet control.

 

Thanks

 

Lar

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Rail Community


Autodesk Design & Make Report