STORMCAD MODELING

[maxxl28]

I have a storm sewer junction box with a WW line conflict, the WW line penetrates the box and crosses perpendicular to the flow. I need to model the change in HGL created by this conflict.

 

[froude]

Could you not simply model it as a conduit of very short length with a slightly smaller height than the adjoining sections?

 

[beej67]

FDOT Drainage Manual has some info on this.

http://www.fdot.gov/roadway/drainage/files/stormdrainhb.pdf

Section 5.6 talks about junction losses for utility conflict boxes, which is what you're describing.

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East -

http://www.campbellcivil.com