How to simulate two pipe connecting with each other in HydroCAD?

[galaxy2014]

Hello,

Please see the following screen shot, one smaller pipe connect to one larger pipe, if there is manhole or junction at their connection, does anyone know how to simulate the connection them in HydroCAD? Just create two catch-basin and connect them?

Thank you

 

[psmart]

Correct, use a catch-basin with a 54" culvert outlet. Since your arrangement will have a very low entrance loss going into the 54" culvert you can use a low Ke value for the entrance loss.

Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[galaxy2014]

Hello,

Thank you for your reply, I still do not know how to do that, do you mean I use a catch-basin with a 54" culvert and a 36" culvert, setup 54" culvert's "Routing" to be primary and setup 36" culvert's "Routing" to be device 1, like the following 1st screen shot? Or I use two catch-basin for 54" culvert and 36" culvert separately and let 36" culvert flow to 54" culvert, like the 2nd screen shot?

1st screen shot

2nd screen shot

Thank you.

 

[psmart]

Use a separate (pond) node for each pipe segment, with the OUTLET defined in each node.

CB#1 has a 36" outlet
CB#2 has a 54" outlet.


Peter Smart
HydroCAD Software

http://www.hydrocad.net

 

[galaxy2014]

Hello,

so just like this?

 

[galaxy2014]

Hello,

Thank you for your suggestion, I just create the model like what you said, but I receive the warning: Pond Ex 54" ACCMSPP Submerged Pond Ex 36" CMP Primary device #1 INLET by 3.66', so how to deal with this case?

thank you

 

[psmart]

Please see your other thread. You are actually discussing the same issue in both threads. A pipe junction or change in size would be handled the same way.

Peter Smart
HydroCAD Software

http://www.hydrocad.net