×
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

Analysis of OWSJ with Class 4 Sections (CISC)

Analysis of OWSJ with Class 4 Sections (CISC)

Analysis of OWSJ with Class 4 Sections (CISC)

(OP)
Problem: Bending Resistance of Class 4 Sections
Governing Code: CISC (Canada)
Question: How do I solve "j" (or Monosymmetric Constant)?

Involves: OWSJ with double angle chords singly-symmetric about the y-axis; class 4 sections

I have to analyze some OWSJs whose top & bottom chords were fabricated using class 4 sections. Some of them have panel points greater than 610mm so I am referred to S136 to determine the bending resistance of the members.

C3.1.2.1 - Lateral Torsional Buckling Strength
- requires the calculation of Fe (Eq. C3.1.2.1-6) which contains the variable "j" (not "J" - St. Venant). It is this lower case "j" that has me perplexed. (formula attached in word doc)

It has been a long time since I have had to do anything like this, and have not found any help in the office.

Any ideas?

 

RE: Analysis of OWSJ with Class 4 Sections (CISC)

cameron737,

I assume that you are talking about hot rolled angles which are class 4.

You do not need to refer to S136 for class-4. Look at cl.13.3.3 of S16, you have an option to reduce the width of section and make it class 3 and then check for bending.

Hope this helps.

 

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