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!

*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.

Jobs

HYDROCAD Affect of groundwater depth - Infiltration Basin

HYDROCAD Affect of groundwater depth - Infiltration Basin

(OP)
Hello All,
Hoping you might be of assistance. I have designed an infiltration basin in HydroCAD.
For the "Exfiltration" Outlet, i have selected the "Conductivity" type as we have a known conductivity of 17.25 inches per hour. Previously, the basin bottom was 2.5 feet above the groundwater elevation. New soil tests have eliminated this prior (inaccurate) result, and new groundwater elevation is 10 feet lower.
Upon revising the groundwater elevation to the lower elevation, the basin fails. This is not intuitive to me. Would not an increased depth to groundwater and thus increased void space to accept the water from the basin help with the basin design? or am i totally missing something?
Thank you.

RE: HYDROCAD Affect of groundwater depth - Infiltration Basin

When using the HydroCAD Conductivity option, the flow is determined using Darcy's law, in which the flow is inversely proportional to the media thickness. This means that the flow will decrease at the distance to groundwater increases. For details please see www.hydrocad.net/exfilt.htm Complete equations are provided in the HydroCAD Owner's manual.

Peter Smart
HydroCAD Software
www.hydrocad.net

RE: HYDROCAD Affect of groundwater depth - Infiltration Basin

(OP)
thank you Peter. I appreciate your help as always.
-Andy

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


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