×
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

References for Mine Plant Structural Design

References for Mine Plant Structural Design

References for Mine Plant Structural Design

(OP)
Anyone know of any structural references related to plant design?  I am specifically referring to mines.  Dealing with loads from screens, loading bins ect.  Thanks.

RE: References for Mine Plant Structural Design

In short, no there are not any standards.  Generally most people will use ASCE 7.  For the screens, feeders, etc you should be able to get dead and live weights from the manufacturer.  You will have to add the material loads.  Consider ACI 313-97 and Design of Steel Bins for the Storage of Bulk Solids by Gaylord for bin/ silo design.  If you are looking for a "code", good luck.  I have never found one.

RE: References for Mine Plant Structural Design

(OP)
Thanks....I'm looking for something that deals with the dynamic loads from screens ect.  Will the equip manufactuer give you any info like that?

RE: References for Mine Plant Structural Design

Hopefully you can get the information you need from the manufacturer.  Sometimes when the operating loads of a piece of equipment were unknown I've had to work backwards through the drive train to the motor to calculate what the output force is.  It is possible that the worst case load is when a machine jams and the mechanical parts and/or frame and support have to withstand these forces until the machine stops.  You have to consider the output of an electric motor at its stalling torque which is about 100% over rated torque, but I would double check that number.  With the addition of impact loads and resonance conditions this all can become a difficult design project.

Regards,
-Mike

 

RE: References for Mine Plant Structural Design

Most of the good manufacturers have information available for each specific piece...but don't be surprised if it leaves a little to be desired.  About the best you can get from them is the dead weight, the operating RPM, and the vibration loads, which depends on the stroke of the machine and the spring constant.  If you are lucky you will get them to give you the resonant vibration loads and the resonant RPM.  More often than not I can't get the resonant information from them and I work in this stuff every day. Other than that you will have to figure the material weights yourself on the screen, but usually figuring a 6" mat will do.  The rest falls back to engineering mechanics and dynamics and like Mike said it gets a little tricky trying to find the best structure.  As a rule of thumb try to take vibrating loads straight to the foundations through columns and try to maintain at least 50% phase shift on the natural frequency of your structure and individual members verses the screen.

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