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Using fewer cross sections (as per the post above) may also help.]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16426.html Thu, 02 Jul 2009 10:43:08 -0600
I received the same error but seems like this is a memory issue. This problem can be resolved by changing the HMS program settings within the Tools Menu under the "Results" Tab. Check minimize amount of memory used box.

Skulk001[/QUOTE]
I think this is not a memory issue. I'd guess it is a problem related to the Windows Vista environment. Has anybody found a solution to the problem? (I mean, to run HEC-HMS in Windows Vista).]]> http://www.bossintl.com/forums/showthread/s/1/threadid/15586.html Thu, 02 Jul 2009 09:17:06 -0600 and is located on my computer in the following folder, C:\Program Files\HEC\HEC-HMS\3.1.0. Open this file using Notepad. The last line in this file should look like ----- "C:\ProgramFiles\Java\jre1.6.0_02\bin\javaw.exe" -Xcheck:jni -ms32M -mx1024M %PY_OPTS% %JAVA_LIB_OPT% -classpath %JARS% %PROG% %ARGS%. Yours will differ based on where you installed JRE6. Attached is a copy of a modified command file. You will have to start HEC-HMS by double clicking on the modified command file. You could create a shortcut to the command file and place that short cut icon on your desktop.[/QUOTE]

I did this already but still the program is not running in Windows Vista.
What should I do next?]]> http://www.bossintl.com/forums/showthread/s/1/threadid/15383.html Thu, 02 Jul 2009 09:12:40 -0600 [QUOTE=Canada;39323]Same sections geometry?
Same boundary conditions?
Same flow (that's a given)?
Same contraction/Expansion Coefficients?[/QUOTE]]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16421.html Wed, 01 Jul 2009 12:12:25 -0600 Same boundary conditions?
Same flow (that's a given)?
Same contraction/Expansion Coefficients?]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16421.html Wed, 01 Jul 2009 11:58:17 -0600 http://www.bossintl.com/forums/showthread/s/1/threadid/16426.html Wed, 01 Jul 2009 11:52:35 -0600 http://www.bossintl.com/forums/showthread/s/1/threadid/16428.html Wed, 01 Jul 2009 05:24:28 -0600 http://www.bossintl.com/forums/showthread/s/1/threadid/16428.html Wed, 01 Jul 2009 05:11:54 -0600 http://www.bossintl.com/forums/showthread/s/1/threadid/16428.html Wed, 01 Jul 2009 04:51:57 -0600
I'm new to this thread and also new to SWMM, i have just graduated from university so if the question sounds novice please forgive me.

I am redesigning a experienced civil engineers flow design for a stormwater system on a wharf as there are several changes to the design.

I have set up a spreadsheet on excel detailing all the grades, RL levels, Invert EI's, pipe dia, grade, pipe lengths and i've modeled the entire system. However when i put my information into my SWMM file, i do not know how to adjust for the Inlet Offset.

For eg.

Pit 6 on line 1 (pit at top of line)
RL: 5.12
Invert EI: 3.7
Max Depth: 1.42

Pit 5 on line 1
RL: 5.0
Invert EI: 3.34
Max Depth: 1.66

this is what i've currently set, its a 36m .375 dia pipe, achieving a 1% grade.

however i want a 0.02 offset in the pit, therefore the pipe from 1/5 to 1/4 will be 0.02 below the level of pipe from 1/6 to 1/5.

Is this achieved simply by selecting the conduit between the two pits and in the 'inlet offset' box putting 0.02, do i also need to change 'outlet offset' to 0.02?
when i use the 'Profile Plot' and i zoom right in at the moment it doesn't shot the 0.02 offset.

Could you please advise me what i need to do to account for the pit offset.

Thank-you]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16427.html Tue, 30 Jun 2009 16:03:04 -0600
I am modeling a small creek.

I see every one saying that the hec ras cross-sections shouldn't cross each other. The creek which I am modeling has an approximate 90 degree curve which makes it mandatory for the cross-sections on either side of the curve to cross each other. What should I do in this situation?

Can any one help me regarding this.

Thanks
Goverdhan Reddy]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16426.html Tue, 30 Jun 2009 10:31:55 -0600
The next release of StormNET handles 3D shapefiles.

However, in the interim, you can follow this procedure to "flatten" the 3D shapefiles to 2D shapefiles:
[url=http://support.esri.com/index.cfm?fa=knowledgebase.techarticles.articleShow&d=30455]Technical Articles - ESRI Support[/url]]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16425.html Mon, 29 Jun 2009 11:07:04 -0600 thanks!]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16425.html Mon, 29 Jun 2009 09:43:38 -0600 when i try to use the available option in Sediment data editor it doesn't responding and
I couldn't add.
Is it a bug?...
Kindly give me ur suggestions

with regards
Ramsankaran]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16423.html Sat, 27 Jun 2009 21:50:07 -0600
I have dambreach model and I want to know time to peack at each section. I have noticed that this is not direct output from HECRAS. Can you please suggest any method that I can try to figure out time to peack flow at each sections.

Thank you

Asela]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16422.html Fri, 26 Jun 2009 08:56:44 -0600
However, we have on our development list to change how EPA SWMM handles this, and allow adverse slopes for the downstream link. This will be addressed in a future release of the software.]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16418.html Fri, 26 Jun 2009 07:27:43 -0600
I am modeling a small creek to submit to FEMA for a LOMR application. When compared to the effective model from FEMA my model is showing lower water surface elevations(approximately 1 - 1.5ft), I used the same manning's coefficients and flow data as in the effective model.

Can any one tell me what might be the cause for the difference.]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16421.html Fri, 26 Jun 2009 04:17:25 -0600 *.dat header -> isn't necessary ;;data time Value [by sys. units] M/D/Y HH:MM:SS x.y ;; prec = 1]]> *.dat header -> isn't necessary ;;data time Value [by sys. units] M/D/Y HH:MM:SS x.y ;; prec = 1]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16420.html Thu, 25 Jun 2009 22:34:22 -0600 Simly use ctrl+c in excell and ctrl+v in swmm files (*.ini in EPA, asociated text editor in PCSWMM).
kls]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16301.html Thu, 25 Jun 2009 19:38:02 -0600 Which format use the rainfall interface file in EPA SWMM 5.
Is it the similar like for timeseries but stored in external file? It doesn't work propperly in my experience.
Is it possible to create my own interface fille? If yes how please.
Here is the posibility to store time series in [I]*.ini[/I] file but it is sometimes litl unnoticed.
Thanks a lot for help
kls]]> http://www.bossintl.com/forums/showthread/s/1/threadid/16420.html Thu, 25 Jun 2009 19:34:07 -0600