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!

*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

AISC Influence Line Coefficient Tables

AISC Influence Line Coefficient Tables

AISC Influence Line Coefficient Tables

Could you please help explaining what the N = 1.27, N = 1.32 or the N values on each AISC influence line coefficient tables mean and How they can best be used for specific applications. Example a continous three span beam with the following combination: 10.68m, 12.8m and 10.67m.

Thanks in advance

RE: AISC Influence Line Coefficient Tables

Are you referring to AISC "Moments, Shear, & Reactions for Continuous Highway Bridges"? My book doesn't have N=1.27 & N=1.32.

In my version, N is a factored length using the shortest span length as N=1. Using the numbers you provided, for a three span bridge, N for the Center span is 1.2. The exterior spans have N=1, and the center span has N=1.2

RE: AISC Influence Line Coefficient Tables

That is great bridgebuster. I just wanted that clarification, thanks for the timely salvation

RE: AISC Influence Line Coefficient Tables

You're welcome

RE: AISC Influence Line Coefficient Tables

Does anything like this exist for frame analysis of RCBs?

RE: AISC Influence Line Coefficient Tables

There's Klienlogel but it doesn't have influence lines only formulas for maximum moment and shear for dozens of loading cases.

RE: AISC Influence Line Coefficient Tables

OSU: I was looking my files for something this morning and I came across "The Handbook of Frame Coefficients" circa 1947. If I have time next week I scan it.

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! Already a Member? Login


eBook - The Future of Product Development is Here
Looking to make the design and manufacturing of your products more agile? For engineering and manufacturing organizations, the need for digital transformation of product development processes just became more urgent than ever so we wanted to share an eBook that will help you build a practical roadmap for your journey. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close