×
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

lattice jib extensions: why?

lattice jib extensions: why?

lattice jib extensions: why?

(OP)
Hello, there:

Just coming across this site today. I'm a writer trying to do some some research on basic crane design and am looking at mobile telescopic boom cranes. Have found plenty of promotional material, but not much in the way of explainers.

Can anyone tell me why you'd want to use a fixed lattice jib extension at the end of the telescopic boom? On what kind of jobs is that good for, and why?

Thanks for the help!

-- r8lobster (n00b)

RE: lattice jib extensions: why?

By separating the tension cable and the stick by the distance of the jib, the stick loses a dual loading of flexure and compression and feels only compression.

RE: lattice jib extensions: why?

The jib is an extension attached to the boom point to provide added boom length for lifting specified loads. The jib may be in line with the boom or offset to various angles in the vertical plane of the boom.

A jib is most commonly a component that extends the upper/outer end of a boom and provides both extension and greater access/availability for the lift.

http://www.slideshare.net/vipinb/presentation-on-mobile-cranes

RE: lattice jib extensions: why?

Get a book "Cranes and Derricks" by Shapiro.  An excellent reference for your edification.

RE: lattice jib extensions: why?

Second the recomendation on the book. Also, jibs can be offset slightly which makes handling materials in some situations easier. A common example is setting materials on a roof top. Since it is angled slightly, the crane can sit back from the building a little nad not worry about the boom contacting the building at the roof/ wall line. Because it is lattice it is light and easily carried. Generally it does not have large capacities.

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