×
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

Bases with Moments

Bases with Moments

Bases with Moments

(OP)
Hi, Guys

I just want to confirm something. If a Base has a moment on it from a steel post and the post is imbedded into the concrete that would make it fixed, now is it a must to have steel (re-bar) in the concrete base because of the moment or is it right to make the base a certain depth for example 500 deep for a 1m x 1m base. Using the 45 degree pressure line.

RE: Bases with Moments

Hmmm...a sketch posted here might help. Not sure where the base plate is with respect to the concrete base.

RE: Bases with Moments

(OP)
Ok let me change the scenario. The base is 650mm deep and the base plate is 150mm from the surface. So imbedded 150mm into the concrete base. The base remains 1m x 1m.

RE: Bases with Moments

The followings are the references for design of embedded steel as fix moment connection

PCI Design Handbook Precast and Prestressed Concrete 6th Ed Section 6.9
PCI Engineering Journal Precast Concrete Connections With Embedded Steel Members
ACI Journal Strength of Embedded Steel Sections as Brackets
ASCE Guidelines for Design of Joints between Steel Beams and Reinforced Concrete Columns

The moment capacity depends on the concrete bearing. The additional welded reinforcement will increase the capacity. See attached PDF file.

anchor bolt design per ACI 318-11 crane beam design
http://www.civilbay.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