
|
|
|
|
|
Applies To |
|
|
|
|
|
|
|
Product(s): |
Bentley SewerGEMS, Bentley SewerCAD, Bentley CivilStorm |
|
|
Version(s): |
08.11.05.XX |
|
|
Environment: |
N/A |
|
|
Area: |
Output and Reporting |
|
|
Original Author: |
Craig Calvin, Bentley Technical Support Group |
|
|
|
|
|
Problem
After computing a model an error appears stating "H&H-SewerGEMS stopped working".
Clicking on the button outlined in red above will display the Exception.log file with the following message:
"System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: Index was out of range. Must be non-negative and less than the size of the collection.
Actual value was -1."

Solution
The above errors may be due to RTK values in a RTK Table.
Make sure all values used are within an acceptable range (Components menu > RTK tables).
The RTK parameters are:
R - fraction of precipitation that enters the collection system for that component
T - the time from the precipitation pulse to the peak of that component of the hydrograph
K- the ratio of the time to peak to time to end of hydrograph for that component.
Notes:
- K is usually on the order of 1.5 to 2.5.
- The sum of the R values for all components should be positive but less than 1.
- The default units for T is hours while R and K are dimensionless.
- The error above will appear if a T value less than 1 minute is entered.
See Also
SewerGEMS Help Article "Assembling RTK Parameters"