Difference between revisions of "TUFLOW Message 1278"

From Tuflow
Jump to navigation Jump to search
 
(2 intermediate revisions by the same user not shown)
Line 7: Line 7:
 
|message_desc=The inlet level for the pit is below the lowest connect channel / culvert.
 
|message_desc=The inlet level for the pit is below the lowest connect channel / culvert.
 
|suggestions=Check inputs and ensure that invert levels are being correctly specified.<br>
 
|suggestions=Check inputs and ensure that invert levels are being correctly specified.<br>
If US_Invert is set to -99999, run the model in a test mode without any 1D elements and any 1D-2D links to produce zpt_check and check if Zpts elevation at pit location is reasonable.<br><br>
+
If US_Invert is set to -99999, run the model in a test mode without any 1D elements, 1D/2D links and other 1D related features to produce zpt_check file. Review if Zpts elevation at pit location is reasonable.<br><br>
 
'''SGS model''': Users may receive this error after converting a working non-SGS model to an SGS model. In a non-SGS model, the cell elevations are sampled at the cell centres, while an SGS model samples DEM elevations inside the cells based on the SGS sample distance and uses the lowest elevation inside the cell as the “pit inlet level”. Therefore, an SGS model might have picked up an elevation lower than the pipe invert level. In such case, the "US_Invert" attribute of the 1d_nwk GIS layer can be used to manually specify the ground elevation of the pit. If possible, it is also suggested to review the cell size of the model, so that the model doesn't sample an elevation far away from the pit.  
 
'''SGS model''': Users may receive this error after converting a working non-SGS model to an SGS model. In a non-SGS model, the cell elevations are sampled at the cell centres, while an SGS model samples DEM elevations inside the cells based on the SGS sample distance and uses the lowest elevation inside the cell as the “pit inlet level”. Therefore, an SGS model might have picked up an elevation lower than the pipe invert level. In such case, the "US_Invert" attribute of the 1d_nwk GIS layer can be used to manually specify the ground elevation of the pit. If possible, it is also suggested to review the cell size of the model, so that the model doesn't sample an elevation far away from the pit.  
  

Latest revision as of 12:06, 21 February 2024

TUFLOW Message
ERROR 1278 - Pit <pit ID> inlet level is below lowest channel/pipe bed.
ERROR 1278 - Pit Entry Level = <value>; Lowest Channel/Pipe Invert = <value>

Alternate Message
WARNING 1278 - Pit <pit ID> inlet level is below lowest channel/pipe bed.

Message Type
ERROR
WARNING

Description
The inlet level for the pit is below the lowest connect channel / culvert.

Suggestions
Check inputs and ensure that invert levels are being correctly specified.
If US_Invert is set to -99999, run the model in a test mode without any 1D elements, 1D/2D links and other 1D related features to produce zpt_check file. Review if Zpts elevation at pit location is reasonable.

SGS model: Users may receive this error after converting a working non-SGS model to an SGS model. In a non-SGS model, the cell elevations are sampled at the cell centres, while an SGS model samples DEM elevations inside the cells based on the SGS sample distance and uses the lowest elevation inside the cell as the “pit inlet level”. Therefore, an SGS model might have picked up an elevation lower than the pipe invert level. In such case, the "US_Invert" attribute of the 1d_nwk GIS layer can be used to manually specify the ground elevation of the pit. If possible, it is also suggested to review the cell size of the model, so that the model doesn't sample an elevation far away from the pit.


Up
Go-up.png 1xxx Messages