×
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

Column base plate for moment frame

Column base plate for moment frame

Column base plate for moment frame

(OP)
Hi,
I'm trying to design the column base plate for a residential moment frame.  The foundation is an 8" by 29" grade beam with 3-#5's top and bottom on piers.  The column is subjected to a 13 kip axial force and a 17 kip moment which seems to have a pretty high eccentricity of 15 inches (this is from a lateral EQ load using a 1.0 factor).  I'm using an example from page 22 of the Errata for AISC Design Guide 1: Column Base Plates that I downloaded for free off the internet.  Unfortunately, I couldn't get access to the whole thing.  My question is, to find the length "A" in that example, what do the different numbers in that equation refer to (specifically the 4(2.1 x 14)/6 and also the (2.1 x 14)/3))? I'm getting some wierd numbers for my tension force.  If increasing the size of the grade beam width is not an option, is shaping the base plate into an upside down "u" and bolting through the grade beam acceptable?  Problem with that is there still may not be enough concrete area for bearing.  Does everyone use UBC Table 19-D for the bolt strengths?  Thanks for all the help.   

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