×
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

Retaining Wall Equivalent Fluid Pressure

Retaining Wall Equivalent Fluid Pressure

Retaining Wall Equivalent Fluid Pressure

(OP)
Can anybody describe what the Equivalent Fluid Pressure (EFP) Angle is?  I am doing a retaining wall design and our program is asking for the EFP angle?  I know how to develop the Equivalent Fluid pressure but I am unsure on how to reach the required angle?  If anybody has any suggestions, they would be greatly appreciated!  Thank you,

Travis Brockway
Blue Mountain Engineering

RE: Retaining Wall Equivalent Fluid Pressure

Would that be the angle between a line perpendicular to the wall face and the line of action of the active force. For compacted backfill, the angle is assumed to be .66 times the friction angle of the soil.

RE: Retaining Wall Equivalent Fluid Pressure

Quit using the program and solve it with a pencil.

f-d

¡papá gordo ain't no madre flaca!

RE: Retaining Wall Equivalent Fluid Pressure

I never heard of an "EFP angle."  What program are you trying to use?  Most programs ask for an angle of internal friction (phi) and soil weight or for the EFP.

www.PeirceEngineering.com

RE: Retaining Wall Equivalent Fluid Pressure

Probably Enercalc.  Their programmers have totally unrealistic expectations on how work is really done.

RE: Retaining Wall Equivalent Fluid Pressure

(OP)
It is Digital Canal Software.  We are now using Retain Pro and it works great.  Thanks for the info!

RE: Retaining Wall Equivalent Fluid Pressure

Wouldn't an equivalent fluid pressure by definition be applied perpendicular to a vertical wall?

RE: Retaining Wall Equivalent Fluid Pressure

Yes, but I have seen many solutions over the years using the same angled force diagram of which he is speaking.   

Mike McCann
MMC Engineering
Motto:  KISS
Motivation:  Don't ask

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