Culvert Design
Culvert Design
(OP)
I have to design a 400ft long box culvert. We have a stream that will transition into the box culvert as it travels under pavement and then transitions back into a stream. How do I properly model this in HydroCAD or PondPack?





RE: Culvert Design
You'll have to make sure the Subcatchments feeding your stream are set up and connected to the Reaches to accurately model the entire watershed feeding into the stream (the subcatchments may be rather large if this is a perennial stream).
I'm not familiar with PondPack.
Hope this helps,
Derek
RE: Culvert Design
I thought of that, but modeling the culvert as a reach does not take into acount the entrance losses (k value) from the culvert's entrance headwall.
What if I model the upgradient stream as a reach, then model the culvert as a pond with no storage and with the outlet serving as the culvert, then have a second reach for the downgradient stream?
RE: Culvert Design
RE: Culvert Design
So your model would have a pond w/culvert (for the road crossing) followed by a reach for the open-channel flow downstream of the culvert.
Peter Smart
HydroCAD Software
www.hydrocad.net