Community
Civil 3D Forum
Welcome to Autodesk’s Civil 3D Forums. Share your knowledge, ask questions, and explore popular AutoCAD Civil 3D topics.
cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

Inlet bypass

10 REPLIES 10
SOLVED
Reply
Message 1 of 11
Joe-Bouza
530 Views, 10 Replies

Inlet bypass

I'm looking at Hyraflow express to estimate my inlet spacing and I am puzzled about the results: I entered our typical inlet parameter, ran the calc for a known flow like 2 cfs, looked to see where the spread reached half a lane and the results looked ok. What puzzles me is if I adjust the length of the inlet - say double it for a double inlet the spread does not change for a given flow as matter of fact if I change the inlet length to anything it does not change? I put in 100' recalced and no change - this is reducing my confidence

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS
10 REPLIES 10
Message 2 of 11
fcernst
in reply to: Joe-Bouza

Seems to be working and changing spread as a function of inlet length in 2013...

 

Capture.JPG



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 3 of 11
Joe-Bouza
in reply to: fcernst

Hi Fred
I obviously don't know what I am doing? I thought the purpose of controling spread was for the up stream portion to the inlet? When I change the length it changes the spread of the bypass flow or at least it seems that way to me, as the graphic you show. depicts. Do I have it backwards?
Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS
Message 4 of 11
fcernst
in reply to: Joe-Bouza

Right you have it backwards...It is using correct logic at least, for an inlet/spread/bypass  calculation.

 

This has some pretty cool graphics here.. hopefully this will stand up to rigorous testing for accuracy, which I haven't done.

 

 

 

 

 

 



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 5 of 11
Joe-Bouza
in reply to: fcernst

Thanks for straightening me out. make sure I'm clear: when looking at the graphic the flow is into the page? and the reported spread is down stream of the inlet? But in desigh I need to determine flow to give limiting spread upstream, correct?

Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS
Message 6 of 11
fcernst
in reply to: Joe-Bouza

You determine where you need to take water off the street at locations where you exceed your spread criterion for the Minor Event. It's an iterative process.



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 7 of 11
Joe-Bouza
in reply to: fcernst

I got that. Upstream, right?
Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS
Message 8 of 11
fcernst
in reply to: Joe-Bouza

In that graphic we are looking downstream.



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 9 of 11
Joe-Bouza
in reply to: fcernst

Thanks. I have a better understanding today
Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS
Message 10 of 11
fcernst
in reply to: Joe-Bouza

10-4...Have a great weekend!



Fred Ernst, PE
C3D 2024
Ernst Engineering
www.ernstengineering.com
Message 11 of 11
Joe-Bouza
in reply to: fcernst

Breaker Breaker.. You too good buddy <G>. Now there's a flashback to the 70's
Thank you

Joseph D. Bouza, P.E. (one of 'THOSE' People)

HP Z210 Workstation
Intel Xeon CPU E31240 @ 3.30 Hz
12 GB Ram


Note: Its all Resistentialism, so keep calm and carry on

64 Bit Win10 OS

Can't find what you're looking for? Ask the community or share your knowledge.

Post to forums  

Rail Community


Autodesk Design & Make Report