×
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

Padeye Design

Padeye Design

Padeye Design

(OP)
I am designing a single padeye plate (no cheek plates) with a single shackle pin going through it. I am accouting for the two most likely modes of failure namely 1) Bearing = Fu x dia of hole x plate thickness 2) shear tearout = 0.4 Fy x Clear edge distance x plate thickness. Is this sufficient? Could anyone think of something else?
 

RE: Padeye Design

Check into the ASME BTH design guide for below-the-hook devices.  It includes design data for pinned connections.  There are several different checks.

RE: Padeye Design

You can buy these relatively cheaply at Grainger or McMaster-Carr??

RE: Padeye Design

For shear tearout, you could multiply the area by 2.  Be aware that AISC 9th edition, presumably 13th too, sets a limit on the allowable "clear edge distance.   You also need to check weld of padeye to base material.

RE: Padeye Design

(OP)
weab - 1) where does the factor of 2 for shear tearout come from? 2) Is it because, the pin would, for lack of a better term "emanate out" two cracks from it's circumference out to the plate edge? 3) would this factor of 2 also apply in the case of a bolt and a beam web?

RE: Padeye Design

JStephen is right.  ASME Below the hook is the best reference I have found. Easy to follow, and very complete.

RE: Padeye Design

(OP)
Thank you all. I found AISC 14th edition now talks about pin-connections and eye bars as well. The equations are very similar to the ones in ASME BTH-1. My curiosity as to the failure mode is not completely satisfied but that's because, the ASME equations on pin connected joints are "empirical". However i did manage to find some papers that talk about a failure mode similar to the one i talk above. just a word of caution - don't use the empirical formulae (with 2t widths and 0.63 constant) in your beam web tearout calc

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