Need a book? Engineering books recommendations...

# Re: LRFD and Steel Plates

• To: seaint(--nospam--at)seaint.org
• Subject: Re: LRFD and Steel Plates
• From: Charley Hamilton <chamilto(--nospam--at)uci.edu>
• Date: Wed, 09 Mar 2005 14:17:00 -0800

```Dave -

I assume you're bending in the strong-direction, or else you wouldn't
```
need LRFD F1-14. The moment capacity would simply be Mp (no buckling when bending about weak axis).
```
```
I don't actually know the answer, but I believe that 57000 has units of ksi. Here's my rationale:
```
1) Lr = 57000*ry*sqrt(J*A)/Mr           [LRFD F1-10, 1993 spec]

2) Lr = 2*ry*E*sqrt(J*A)/Mr             [LRFD F1-10, 1999 spec]

3) Therefore, to get the same results, 2*E = 57000
Well, it's close anyway.  ;-)

Therefore, for Lb in inches, I would expect to obtain Mcr in kip*in.

HTH (and that my logic is actually working today),

Charley

--
Charles Hamilton, PhD EIT               Faculty Fellow
Department of Civil and                 Phone: 949.824.3752
Environmental Engineering           FAX:   949.824.2117
University of California, Irvine        Email: chamilto(--nospam--at)uci.edu

******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at: http://www.seaint.org/list_FAQ.asp
```
* * This email was sent to you via Structural Engineers * Association of Southern California (SEAOSC) server. To * subscribe (no fee) or UnSubscribe, please go to:
```*
*   http://www.seaint.org/sealist1.asp
*
```
* Questions to seaint-ad(--nospam--at)seaint.org. Remember, any email you * send to the list is public domain and may be re-posted * without your permission. Make sure you visit our web * site at: http://www.seaint.org ******* ****** ****** ****** ******* ****** ****** ********