×
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

Calculate d/D ratio in spreadsheet

Calculate d/D ratio in spreadsheet

Calculate d/D ratio in spreadsheet

(OP)
Can anyone out there help me how to calculate a d/D ratio in a spreadsheet?  I am trying to verify results obtained in InfoSewer using a spreadsheet.   

RE: Calculate d/D ratio in spreadsheet

First, how are you calculating "d"?  Please give more information about your process.  If you are computing flow depths based on a flow rate and pipe size then all you need to use is manning's eqn. and code into visual basic to compute "d".
Hopefully that helps.

RE: Calculate d/D ratio in spreadsheet

Try using lookup tables.  I found this much simpler to set up than trying to use a precise formula to find d/D.  You can find all the values you should need from Appendix E:  Area, Wetted Perimeter and Hydraulic Radius of Partially Filled Circular Pipes in the Civil Engineering Refernce Manual, 6th Edition, Lindeburg 1998 (or other reference text).  If you need more precision, you can interpolate from the values in the table...


 

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