×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Pipe Outlet Inside Catch Basin

Pipe Outlet Inside Catch Basin

Pipe Outlet Inside Catch Basin

(OP)
We are seeing more wet detention pond outlet designs with pipe risers and outlets inside the catch basin (as a "protected outlet" alternative to the reverse slope pipe).  I have attached photos of two examples - one with vertical low flow and peak discharge outlets; one with vertical low flow outlet but peak discharge outlet in the horizontal plane.  I am assuming the outlets will act as weir flow at low heads above outlet invert, but am wondering once the driving head is higher.  If the outlet diameter is less than the pipe diameter, it should act as orifice flow.  What if the outlet diameter is the same as pipe diameter?  What would be the controlling flow?  How would it be modeled in HydroCad?

RE: Pipe Outlet Inside Catch Basin

You could model this as two separate "ponds": The main storage pond with a culvert outlet, and then a zero-storage pond for the CB structure, including the appropriate weir/orifice details.
 

Peter Smart
HydroCAD Software
www.hydrocad.net
 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources