×
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

Grade beam connection to pile cap

Grade beam connection to pile cap

Grade beam connection to pile cap

(OP)


Can anyone tell me what is common connection of grade beam to pile cap? Moment connection or pin? Can you please provide a detail.

Also where I can find the grade beam deflection criteria? I mean how much deflection the beam is allowed. My beam is 37.5 feet long.

Any grade beam design example? Very much appreciate it if you have a sample of calculations. This grade beam sees four pre engineered building columns load.

thanks


RE: Grade beam connection to pile cap

I would assume the connection as pinned unless I had a compelling reason to do otherwise. If your beam in continuous, then the question regarding the connection to the cap is somewhat moot.

Deflections are more or less up to your judgment. Normally-proportioned concrete beams don't often have deflection issues. Find out your deflections and see what you think.

You biggest challenge may be the biaxial bending of the beam to accommodate the PEMB's column loads.

RE: Grade beam connection to pile cap

I'd put piles beneath all your primary building columns unless you're constrained from doing so. Doing otherwise would seem to invite differential settlement issues. ACI has a document on the simplified design of concrete buildings. In it they suggest a grade beam design load based on the load in the neighbouring piles with the intent of minimizing differential settlement. I have no idea how they came up with the equation but it might be worth a look.

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

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