×
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

1981 6x6x5/16 Tube Column Fy=

1981 6x6x5/16 Tube Column Fy=

1981 6x6x5/16 Tube Column Fy=

(OP)
Quick question, I am working with a building from 1981. I have drawings but there is no mention to the yield strength of the columns. The beams are 50 ksi.

I was just wondering if anyone had any thoughts on what was the typical yield strength of Tube Columns? I know that per the AISC 9th edition which came out late 80, typically it seams 46 ksi.

Thanks

RE: 1981 6x6x5/16 Tube Column Fy=

This goes back a long way in my memory but I thought we were using 42 ksi for tubes at one time and then switched to 46 ksi.  

RE: 1981 6x6x5/16 Tube Column Fy=

The 8th edition manual, which I believe came out in 1980, shows 46 ksi in their tube column tables.  The availability table shows three types for square tubes, with a note that implies the 46 ksi version was most readily available.

A500 Grade A - Fy=39 ksi - Fu=45 ksi
A500 Grade B - Fy=46 ksi - Fu=58 ksi
A500 Grade C - Fy=50 ksi - Fu=62 ksi

The 7th edition manual, from 1970, has tube column tables for both 36 ksi (A501) and 46 ksi (A500 Grade B).

RE: 1981 6x6x5/16 Tube Column Fy=

nutte:

You jogged my memory....I think it was 36 ksi that we were using.

RE: 1981 6x6x5/16 Tube Column Fy=

Back then we always spec'd 46.

Mike McCann
MMC Engineering

RE: 1981 6x6x5/16 Tube Column Fy=

Why not check the loads and see what Fy is reasonable based on the loads.

Else perform a Charpy test or destructive sampling to verify the Fy.

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