×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

HydroCAD multistage outlet

HydroCAD multistage outlet

HydroCAD multistage outlet

(OP)
I am using HydroCAD to model a catch basin with two inlets and two outlets and am having trouble figuring out how to go about it.  The two inlets are a rectangular orifice to control the flow of the 10-year storm and a top grate to allow the 25-,50-, and 100-year storms to enter the catch basin.  The two outlets are an orifice flowing out into an infiltration trench from the bottom of the catch basin and an elliptical pipe flowing out of the catch basin.  

The catch basin is on the downslope side of a detention basin.  Do I need to create a new node for my catch basin, or can I add data to the detention basin node?

RE: HydroCAD multistage outlet

This sounds like a typical riser structure as discussed at www.hydrocad.net/pond1.htm  But while a riser normally has just converging flows (the "inlets"), your outflow is also being split in two.

To handle this, you may need to use two ponds:  Pond 1 will include the main pond storage, and will have two outlet devices (the orifice and top grate) both routed to primary.

Route the primary outflow to Pond 2, which will be used to model the riser outlets.  You can probably use the Catch Basin option (for a zero-storage pond).  Pond 2 will have an outflow pipe (routed to primary) and an orifice (routed to discarded.)

The only draw-back of this approach is that you may need to switch to a tailwater-sensitive routing procedure in order to handle the tailwater inside the riser.  But don't jump the gun.  The software will give you a warning if it detects a potential tailwater dependency.

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! Already a Member? Login


Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close