SewerGEMS export to SWMM

Question

Hi 
 In my sewergems model I have nodes with more than one loading, some are fixed loads and the others has patterns. 
 When I expoert to SWMM , itn only adds the fixed loads and not the pattern loads. I would think that it would add all the loads over a 24 hour period regardless of the patterns. 
 
 Can someone please advise 
 Regards 
 sewerge 
 Rossouw

Scott Kampa · Accepted Answer

Hello Rossouw, 
 
I spoke with the developers about this. This is working as designed. There are many different possible combinations that the export could work. The current way you are seeing it is the current way the export is handled. When there are one or more fixed pattern loads for a node, the export will pass the loading as to the Dry Weather tab in SWMM V5 as a baseline flow. 
 
However, if there are multiple loads were one follows an hourly pattern and the other is fixed, it will import everything to the Direct tab in the manner you are seeing. This method is the most straightforward method to export the data while avoiding possible issues in the conversion. 
 
Please let me know if you have any additional questions. 
 
Regards, 
Scott

Scott Kampa · Answer

Hello Rossouw, 
 
The pattern load will be exported in one of two way, depending on how the pattern is set up. If the pattern is a 24 hour pattern in 1 hour increments, the pattern itself will be exported to the node in SWMM V5. 
 
However, if the pattern is not in hourly increments, the data will be exported as a time series. Either way the data should be there. We did some testing in a few sample models and the above information appears to work with both cases. 
 
The following link has details on how this works and where to view the data in SWMM V5: communities.bentley.com/.../26680.pattern-loads-in-sewergems-are-not-being-exported-after-exporting-to-swmm-how-are-pattern-loads-at-nodes-in-sewergems-exported-to-swmm-v5 
 
Please let us know if you have any questions. 
 
Regards, 
Scott

Scott Kampa · Answer

Hello Rossouw, 
 
I just tested this in a sample model. In the sample, I had a sanitary loading based on a pattern and a fixed wet weather inflow. In that case, the export is combining the loads into a single load. There is a time series that includes the fixed load from the wet weather loading and the pattern flow for the sanitary loading. 
 
If the pattern loading was not present and there was only the fixed wet weather inflow, the flow in SWMM V5 would appear as a baseline flow under the Direct tab for the inflows at the element. 
 
If you are seeing something different, I will need more information for how your loading appears in SewerGEMS. It is possible that I am looking at a different loading setup. A screenshot of the loading and any patterns you are using would be useful. 
 
Regards, 
Scott