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

Tc for pre- and post-development

Tc for pre- and post-development

Tc for pre- and post-development

A site project that I am working on appears to have the pre- and post-developed time of concentration unaffected, either in time or flow path, by a proposed building location and site work. How does one address this scenario? I am worried that I will under-design the detention pond...

any thoughts are appreciated.



RE: Tc for pre- and post-development

I infer that the most hydraulically remote point, and subsequent flow path, has not changed between cases?

You might consider breaking out the proposed development watershed into two basins, one for the development area and one for the rest of the watershed.

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

RE: Tc for pre- and post-development

As stated above, if you believe the additional building area may have an effect on the site hydrology, break the drainage area down further.

What is the order of magnitude between building : drainage area?

If you are adding a 1000 sf barn on a 200-acre farm the impacts are negligible. Same barn on a 1/2 acre is a different story.

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


White Paper - Design for Additive Manufacturing
With a growing number of parts manufactured directly by additive manufacturing techniques, it is important to lay down design principles suitable for such manufacturing processes and to ensure parts are designed for additive manufacturing. There are several factors that are to be considered at the design stage. Few such design issues in additive manufacturing are discussed in this paper. 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