×
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

Metal Bldg Design using RISA 3D

Metal Bldg Design using RISA 3D

Metal Bldg Design using RISA 3D

(OP)
Has anyone used RISA 3D for the analysis of a metal building?  I am having trouble figuring out if the AISC 13th edition is ok to use?  Where does the AISC address web tapered members for axial load + flexure?

The last I used RISA 3D for a metal building analysis was with spreadsheets that took only the analysis portion of RISA 3d and incorporated the appendix F of the 9th edition.

Any comments welcome.  Thanks.

RE: Metal Bldg Design using RISA 3D

Quite likely the current intent of AISC respect web tapered members is them to be designed as per Design Guide 25, Frame Design Using Web-Tapered Members.
Then specific omission in the current code would be to direct to the guide.

As for RISA-3D, one should look in the documentation if your version includes the design as per such guide (normally such thing wouldn't be omitted, since an achievement). Last version I have for the guide dates from 2011, what makes unlikely the implementation, but ask Risatech.

Anyway, I loving simple things wherever possible, find daunting a 200+ pages guide for tapered members for office use. Even tabulated solutions would be better, even if in order to keep economy tight.

RE: Metal Bldg Design using RISA 3D

ishvaag is correct in that DG 25 is the current AISC method for the design of web tapered members.  He is also correct in that it is quite lengthy, but more because it is comprehensive than unduly complicated.

RE: Metal Bldg Design using RISA 3D

As of today (May 2012) RISA does not yet perform code checks per the AISC DG-25. We've had a decent number of requests for it though.  Therefore, we are trying to get it into the next release of the probram (version 11 due out at the end of 2012 or beginning of 2013).  

Honestly, I was excited enough about this new procedure that i would have liked to see us add it in a couple of years ago (based on a draft copy of the DG-25).  This new tapered member design methodology just seems so much more rationale and comprehensive that was was in LRFD 2nd and AISC 9th. But, our company felt that releasing a major feature based on an unpublished document might not be a good idea.


  

RE: Metal Bldg Design using RISA 3D

Quote:

our company felt that releasing a major feature based on an unpublished document might not be a good idea

good call...

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