×
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

Circular Anchor Bolt Patterns (Refferences??)

Circular Anchor Bolt Patterns (Refferences??)

Circular Anchor Bolt Patterns (Refferences??)

(OP)
I have a circular base plate with a circular anchor pattern. I was looking for a reference on Breakout areas for breakout,pullout etc. I have references for square and rectangular anchor patterns but nothing mentioned for circular. Are there any suggestions as where to start??

RE: Circular Anchor Bolt Patterns (Refferences??)

I'd probably start with CAD and show the anchors and their influence area.  Determine the total area of influence and use that for An per ACI 318 - "Anchoring to Concrete" This will give you your tension capacity.  

Not sure about your actual situation but this should get you started.

RE: Circular Anchor Bolt Patterns (Refferences??)

I think you can still use App. D of ACI 318.  The assumed breakout area can be rectangular, even if the bolt pattern varies.

RE: Circular Anchor Bolt Patterns (Refferences??)

Anchor force P= 4M/ND. where N=no. of bolts, D=diameter of bolt circle.

For poles up to 6' diameter, we tend to use a ring plate at the base of the anchor bolts and about 3'-6" down to make these behave as a group. Just remember that half your bolts are in compression if it is in bending.

 

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