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


Angle of Internal Friction

Angle of Internal Friction

Angle of Internal Friction

I am structural engineer and have been tasked to design a rectangular bin hopper the contents of which is abrasive slurry with a specific gravity of 1.16. Can anyone give me the approximate angle of internal friction?

RE: Angle of Internal Friction

If there is no cementing together of the material, I'd measure the angle of slope above horizontal for a loose pile placed by placing by gravity from the top, but at least 30 degrees.

RE: Angle of Internal Friction

...and less if you use marbles.


RE: Angle of Internal Friction

liquids don't have friction angles. They have viscosity.

If it's a solid (i.e., or plastic), we can help you.


ípapß gordo ainÆt no madre flaca!

RE: Angle of Internal Friction

I would not assume that a "slurry" has an internal friction angle or shear strength. I may be conservative but I would assume a liquid head.


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!


eBook – How to Choose the Correct Corrosion Testing Method
When designing a metal component, engineers have to consider how susceptible certain alloys are to corrosion in the final product’s operating environment. In a recent study by NACE (National Association of Corrosion Engineers), it was estimated that the direct and indirect costs of corrosion in the United States is approximately 6.2% of the GDP. In 2016, that cost exceeded $1 trillion dollars for the first time. 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