Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

RE: Whitmore Section

[Subject Prev][Subject Next][Thread Prev][Thread Next]
>Page 7-114 of the AISC Connections Manual shows
>a sketch for an example using the "Whitmore" section.
>Consider a connection with the brace connecting to a 
>beam only (the column is gone).  I see the dimensions
>Lw, l2, and l1 remaining the same.  The dimension l3
>will increase in length from the corner of the 
>section until a line parallel to the brace intersects
>the beam flange.  Then per the last paragraph on the
>previous page the column length would be the 
>average of l3 and l1 (l2 is negative in this case).
>Would this be correct?

The geometry of the buckling lengthe l1, l2 and l3 as you describe them
sound reasonable. You can use a negative value in determining the average
for the buckling check. It makes sense, because that means the gusset is
very stiff there -- the beam flange is restraining buckling.

Note also, however, the modification in the effective length factor for the
case of a gusset supported on one edge. We recommend 1.2 instead of the 0.5
used when both edges of the gusset are connected.


******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) 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: 
******* ****** ****** ****** ******* ****** ****** ********