] [Thread] [Date] [Author]

["Gary L. Hodgson and Assoc." <design(--nospam--at)hodgsoneng.ca>]

Toot away. We all need those feel good moments to compensate for those 
other times when you wake up in the middle of the night and say did I 
forget to framitize the widget.
Gary

Rhkratzse(--nospam--at)aol.com wrote:
> IIRC it was a grad student, and since this was 20+/- yrs ago they're 
> probably at the top of their profession by now.
>
> My memory is that the critical thing is that the Citicorp building has 
> only 4 columns around the perimeter, but they're not at the corners, 
> they're in the middle of each side.  The design, again IIRC, was based 
> on analyses in the X-X and Y-Y directions, but not in the diagonal 
> direction, which is what the student caught.
>
> Not to toot my own horn, but in 1965 or '66, on my very first 
> engineering job, I was figuring the loads due to a four-legged 
> traveling crane and I came to the conclusion that diagonal forces 
> controlled, just as they did in the Citicorp building's columns.
>
> Ralph Hueston Kratz, S.E.
> Richmond CA USA
>
> In a message dated 1/29/09 7:30:58 PM, seaint04(--nospam--at)lewisengineering.com 
> writes:
> > I'm wondering who that student was and what is he/she doing today?
> >
> > Rich
> >
> >
> > -----Original Message-----
> > From: David Fisher [mailto:dfisher(--nospam--at)fpse.com]
> > Sent: Thursday, January 29, 2009 11:09 AM
> > To: seaint(--nospam--at)seaint.org
> > Subject: RE: Facing mistakes in structural design
> >
> > Jorge:
> >
> > That was the Citicorp Center in New York:
> >
> > http://www.duke.edu/~hpgavin/ce131/citicorp1.htm
> >
> >
> > Fascinating article...
> >
> >
> >
> > David L. Fisher SE PE
> > International Project Manager
> > The Food Water Energy Company/movewithus international
> > Trinity House
> > Cambridge Business Park
> > Cambridge CB4 0WZ
> > United Kingdom
> >
> > 312.622.0409 GSM mobile
> >
> > THE FOOD WATER & ENERGY COMPANY
> >
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: Jorge Jimenez [mailto:joraljim(--nospam--at)prtc.net]
> > Sent: Thursday, January 29, 2009 11:08 AM
> > To: seaint(--nospam--at)seaint.org
> > Subject: Facing mistakes in structural design
> >
> > I remember a story of a group of graduate students that found a 
> > design flaw
> > in a high-rise building for wind effects considerations. They called the
> > attention to the structural engineer who made the design. The designer, a
> > renowned structural engineer, courageously disclosed to the public his
> > mistake. The building was in use and then needed an important 
> > retrofitting.
> > Do you remember the name of this structural engineer or have knowledge of
> > similar and recognized circumstances?
> >
> > Jorge Jimenez, PE
>
>
>
> **************
> Know Your Numbers: Get tips and tools to help you improve your credit 
> score. 
> (http://www.walletpop.com/credit/credit-reports?ncid=emlcntuswall00000002)

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