| |
|
|
|
| |
Applies To |
|
|
| |
|
|
|
| |
Product(s): |
Bentley SewerGEMS, Bentley CivilStorm, Bentley StormCAD |
|
| |
Version(s): |
10.00.00.XX + |
|
| |
Environment: |
N/A |
|
| |
Area: |
|
|
| |
Original Author: |
Mark Pachlhofer, Bentley Technical Support Group |
|
| |
|
|
|
Problem
Does StormCAD (GVF Rational solver) use the momentum equation in the HEC-22 calculation for structure loss?
Solution
Older versions of StormCAD did not use the momentum equation when a pipe connection occurred, but with the CONNECT edition release of the product there is an option for using this equation. The screen shot below is from the Federal Highway Administration - Hydraulic Engineering Circular No. 22, Third Edition and explains more about this.
1. 2013, US Department of Transportation Federal Highway Administration - Hydraulic Engineering Circular No. 22, Third Edition: Urban Drainage Design Manuel. pg. 7-15, https://www.fhwa.dot.gov/engineering/hydraulics/pubs/10009/10009.pdf , August 05, 2016.