×
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

Interpretation of BTH-1-2017 re: Lifting Magnets

Interpretation of BTH-1-2017 re: Lifting Magnets

Interpretation of BTH-1-2017 re: Lifting Magnets

(OP)
This is cross-posted in Mechanical Engineering Other Topics.

In BTH-1-2017, Section 3-1.2, there is this language about lifting magnets:

"The loads used in the design of the structural and mechanical components of a lifting magnet shall be derived based on the maximum breakaway force of the magnet. Resolution of these loads into member and connection forces shall be performed by an accepted structural analysis method."

Later, in 6-2.1, (b):

"Lifting magnet suspension devices should meet the lifting magnet manufacturer's recommendations. If any such devices are used during breakaway testing and are not rated for the breakaway force of the lifting magnet, they shall be removable for the purpose of load testing as required by ASME B30.20."

My question is, in the first passage, what is their scope of the term "lifting magnet"? Are they referring to the magnet itself, or is it used to identify the entire lifting device, such as a lifting beam which carries 4 magnets? In the second passage they seem to differentiate the magnet from what suspends it (like a lifting beam?). The implication, or the reason I ask, is that as it relates to the design of the beam, it would have to be designed for the breakaway force of the magnets, as opposed to being design for the stated rated capacity.

Thanks in advance for any responses.

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