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


Lateral earth pressure

Lateral earth pressure

Lateral earth pressure

Hi guys, mechanical engineer here. I need to get a lateral earth pressure to perform some calculations on a part I'm designing. I have no experience in the geotechnical field and need some tips.

To give you guys an idea of what I'm working with, it will be a cap which will fit over the end of a casing pipe buried in the ground. Since this product will be used in all regions of the US, which soil type would exert the most pressure against it, and where can I look to get a pressure coefficient for it?

RE: Lateral earth pressure

If you are considering all parts of the US, you probably will have frost to contend with. These high pressures and lifting situations can occur. I doubt that a "fits everything" design would be economical for that reason. I'd add to the specs for the northern 1/3 of US that all backfill out to a distance from the installation a distance equal to depth of facility will be backfilled with non-frost susceptible fill. Other than that, I'd assume a density of backfill at 150 pounds per cubic foot of liquid to account for a variety of soil and water conditions.

RE: Lateral earth pressure

That makes sense. Before checking back here, I ended up using a value I found from a table that had a unit weight of 156 pcf. I appreciate the input.

RE: Lateral earth pressure

jhmche - Good advice from oldestguy. Parts of the US have a year-round water table that is essentially at the surface of the ground. In addition to designing the cap for lateral pressure, suggest designing to be watertight.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

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

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