×
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

IBC 06 vs ACSE 7/05 Special Seismic Load Combos

IBC 06 vs ACSE 7/05 Special Seismic Load Combos

IBC 06 vs ACSE 7/05 Special Seismic Load Combos

(OP)
I have reviewed other threads in the site and I have not come across this specific question. Any insight would be appreciated. IBC 06 section 1605.4 includes the same combination for both ASD and LRFD(Strength design; however, the ASCE 7/05 includes two sets of load combos: one for ASD and one for LRFD. My question arises as I look at a sample problem from NCEES in which there is an analysis of a collector element in which case the sample problem uses the IBC combo 16-22 to calculate the actual bending stress, but uses combo 5 under ASD to calculate the actual axial stress. (As I have noticed in another thread, I do realize that IBC combo 16-22 equals ASCE 7/05 combo 5 under strength design, but this is not the case under ASD). Should one adhere to the equations set forth in IBC even when using ASD design processes which would be the conservative approach or use the equations within ASCE 07 for ASD? I may be misinterpreting the code or have overlooked something.
Again, I appreciate any feedback.
Stu

RE: IBC 06 vs ACSE 7/05 Special Seismic Load Combos

mrpid,
I suggest that you browse to www.gostructural.com, the February 2008 issue, and review the article titled "2006 IBC Section 1605.4: Special Seismic Load Combinations"

This explains some of the inconsistencies that the code police have created.

I hope that 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