×
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

Creating a Riprap Check Dam

Creating a Riprap Check Dam

Creating a Riprap Check Dam

(OP)
I have a project with a simple detention pond.  The outlet structure is a 12" pipe with a 6" orifice routed to the pipe, and then a 30 inch diameter inlet that routes to the pipe as well (the invert of the pipe and orifice is 840.29, and the invert of the inlet is 844.37).  The problem is that I have to model a riprap check dam in order to meet stormwater quality measures.  I was going to set the top of the weir at an elevation of 842.  Is there any way to make Hydrocad analyze the flow of water over the weir before it enters the pipe (perform all of this in one pond), or do I need to set up 2 ponds, with the first one having the weir as the primary outlet, and then the second pond with the outlet configuration and the storage beginning at elevation 842?

Thanks.

RE: Creating a Riprap Check Dam

Although I'm not 100% clear about your outlet configuration, you can put the weir in the same pond by routing the weir flow to the 6" orifice.  This will require all flow to the orifice to pass over the weir first.

For details on device routing please see www.hydrocad.net/pond1.htm
 

Peter Smart
HydroCAD Software
www.hydrocad.net
 

RE: Creating a Riprap Check Dam

What municipality are you in?  I've heard lots of them asking for check dams in front of outlet control structures, but I've never heard of one wanting them incorporated into a hydrologic model.

 

Hydrology, Drainage Analysis, Flood Studies, and Complex Stormwater Litigation for Atlanta and the South East - http://www.campbellcivil.com

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