×
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

Vortex Drop Shaft

Vortex Drop Shaft

Vortex Drop Shaft

(OP)
Are there any good reference works out there on the design and detailing of spiral vortex drop shafts?  From my searches so far there appears to be some work on numerical analysis but very little on how to determine the shape of the concrete vortex guide walls or guidance on calculating flow capacities of the structure.

I believe that physical models are often used to determine the performance of the vortex but some theory behind it would be useful

Thanks in advance

RE: Vortex Drop Shaft

I'm not exactly sure what your application is, but I noticed per http://www.jjg.com/2_News.asp?n=6 that a sizeable project designed by Jordan, Jones, and Goulding Engineers with quite deep vortex drop shafts for wastewater near Atlanta recently  "was named the Outstanding Civil Engineering Project of the Year at the 2005 Georgia Section of the American Society of Civil Engineers".  While I'm not familiar with specific aspects of the "vortex" design, I believe the drop shafts on that project were constructed in that case with large diameter ductile iron piping, and smaller vent shafts were constructed likewise with ductile iron piping.

RE: Vortex Drop Shaft

City of Mpls. installed a few of these on the end of force mains to cut the H2S production. Call them up. 6120673-3000 is the generic number. they can direct you to Engineering Services, Sewer Design.

Richard A. Cornelius, P.E.
WWW.amlinereast.com

RE: Vortex Drop Shaft

Arizona Department of Transportation installed several very large stormwater intake spiral vortex drop shafts which connect into a stormwater tunnel under the Papago Freeway in Phoenix.  I believe they are 10 - 20 feet in diameter.  Contact ADOT to get more information on the design.

http://www.dot.state.az.us/index_docs/Contact_ADOT.asp

RE: Vortex Drop Shaft

If you want to go way back, see if you can find the hydraulic studies that were done by John Laboon in the early 50's for the Allegheny County (Pittsburgh)system.  Carnegie Tech (now Carnegie Mellon U.) produced most of the reports.  Perhaps the CMU engineering library can be of assistance.

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