Hydraflow Storm Sewers Extension Pipe Flow

[Anonymous]

I have entered drainage areas and runoff coefficients for all pipes within my pipe network. The drainage areas and runoff coefficients are for each inlet contributing to that specific pipe. Therefore, since there is no flow entering a manhole, I do not have a drainage area or runoff coefficient entered for this feature. However, when I try to run analysis w/ design, it says Line 3 (the pipe immediately after the manhole) does not have any flow and that I should check my drainage areas and runoff coefficients. What are the drainage areas and runoff coefficients supposed to represent for the pipe flow analysis? I would have thought it would be what is contributing to the inlet just before the pipe but that isn't working for me. Please help! Thanks!

I have attached the .stm file for reference.

[Anonymous]

Can anyone help with this? I am having the same problem. 

Thanks!

[Anonymous]

I am also having the same issue. Have you resolved this?

[wfberry]

BK:

It appears if you insert a small amount of Drainage Area (.01)  and a .5 C, in the manhole, the program runs OK.

Perhaps another work-a-round.

Bill

[fcernst]

Didn't look at this...but that's actually just a warning message. There will still be flow coming down from higher in the system through the pipe.

[Anonymous]

Okay, that makes sense. That's weird that it even gives an error message. You'd think they would remove that for manholes, knowing that no additional flow should be coming in it.

Thanks!

[fcernst]

Right...it's an inaccurate message.

It should say Warning: no tributary area.... or no catchment defined.... or actually just go away.