×
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

Design of Base Plates for Circular Columns

Design of Base Plates for Circular Columns

Design of Base Plates for Circular Columns

(OP)
Does anyone know of any literature on the design of base plates for circular columns? We are particularly interested in the calculation of the thickness required for these plates when the width and length is known.

RE: Design of Base Plates for Circular Columns

I do not know of any reference.  I design base plates for circular columns using the AISC ASD Manual, pages 3-106 to 3-110.  To calculate "c", I use the formula for "m", since the formula for "n" does not apply.  Also, it seems to me that the formula for "n'" will not apply unless the column is very large in diameter (allowing the portion of the base plate inside the column to bend).

DaveAtkins

RE: Design of Base Plates for Circular Columns

Hi abjr,

If your column is required to transfer moment to the base plate, whether square, rectangular or circular, one must determine the yield line based on the geometry of the anchor bolts in relation to the column. If the plate thickness gets excessive, utilize stiffners welded to both the base plate and column to shift the yield line.  Shifting this line reduces the eccentricity thus minimizing the thickness of the base plate.

If your column is required to transfer axial loads only, the design will be similar to circular flanges in tension.

Regards

VOD

RE: Design of Base Plates for Circular Columns

AISC's Design Guide 1 "Column Base Plates" suggests using a critical section based on 0.95 times the outside column dimension for rectangular sections and 0.80 time the outside dimension for round sections.

RE: Design of Base Plates for Circular Columns

There are several references that cover the design of baseplates for cylindrical pressure vesselts, process columns, and stacks.  

Pressure Vessel Design Manual - Moss
Pressure Vessel Handbook - Bednar
Process Equipment Design - Brownell and Young (I think it may be out of print).

I offer a spreadsheet on my website (www.mecaconsulting.com) which designs circular baseplates per the last reference.

Regards,

Chris
chris@mecaconsulting.com

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