×
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

Automatic "C" calculation in StormCAD?

Automatic "C" calculation in StormCAD?

Automatic "C" calculation in StormCAD?

(OP)
I just started using Bentley Stormcad after coming from Hydraflow for storm sewer analysis. Is there any way to define areas of cover (impervious, lawn, etc.) and have Stormcad overlay those with each catchment area to automatically generate a weighted C? I find that deriving the runoff coefficient is the slowest part of the whole process.

I used to do this in AutoCAD Map using topologies, and export to Excel, but don't have that software available anymore. It would be great if Stormcad did it internally.

RE: Automatic "C" calculation in StormCAD?

My experience is with the pre-GIS version of StormCAD, but on it we used to delineate our sub areas of pervious and impervious with polylines, and enter each polyline area as a different line on the catchment dialog box, letting it calculate weighted C on its own. Once they went to their integrated GISey version of StormCAD, we dumped it because setting the models up took longer than the data entry used to in the older version.

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