RE: bridge questions

• To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
• Subject: RE: bridge questions
• From: "Dinmore, Gary" <Dinmore(--nospam--at)pbworld.com>
• Date: Mon, 2 Apr 2001 09:02:30 -0400
```Follow Sections 6 & 7 of the American Association of State Highway and
Transportation Officials (AASHTO) Standard Specification for Highway
Bridges.

> -----Original Message-----
> From:	Mete BAYKIR [SMTP:mbaykir(--nospam--at)yukselproje.com.tr]
> Sent:	Monday, April 02, 2001 8:50 AM
> To:	seaint(--nospam--at)seaint.org
> Subject:	bridge questions
>
> Any information on ;
> 1. Determination of design forces for bridge foundations (for SPC B, C and
> D)
>     (We have the acceleration coefficient  A,  0.1<A<0.4 g in my country.
> The column sections preferred by the state highway
>     assoc. are huge ( 2.0*1.0 meters or similar) . When minimum
> reinforcement is applied to the section, i end up with very very big
>
>     plastic moments. what moments should i use? if i use plastic values,
> do
> i need to use a two way working foundation? does the
>
>     column reach its plastic capacity for the two axis at the same time? )
>
> 2. Differences for the mathematical model of a curved (horizontal curve)
> bridge and an aligned bridge
>     (For the same curved bridge, when the angle of response spectrum is
> changed, the local elastic seismic
>     forces of the structural elements differ. The square root of sum of
> squares remain the same but the local forces change.
>     Do I have to try some angles to find the most critical elastic force
> for
> the structural elements (columns ) or is there another
>     procedure which I don't know?)
>
>
> will be highly appreciated.
>
> Mete BAYKIR
>
> YÜKSEL PROJE ULUSLARARASI A.S
> Birlik Mah. 9. Cadde No:41
> Çankaya    06610
> ANKARA,TURKEY
> Tel: +90 312 4957000  (Ext.224)
> Fax: +90 312 4957024
> Email: mbaykir(--nospam--at)yukselproje.com.tr
>
>
> -----Original Message-----
> From: Dinmore, Gary [mailto:Dinmore(--nospam--at)pbworld.com]
> Sent: Monday, April 02, 2001 3:14 PM
> To: 'seaint(--nospam--at)seaint.org'
> Subject: RE: disappointed engineer
>
>
> Bridge engineering puts the Structural Engineer back in charge.  Try it,
> you
> might like it.
>
> > -----Original Message-----
> > From:	Tomás Matta [SMTP:tmatta(--nospam--at)puc.cl]
> > Sent:	Thursday, March 01, 2001 10:19 PM
> > To:	seaint
> > Subject:	disappointed engineer
> >
> > I graduated from college here in Chile about six months ago, and I've
> been
> > working ever since in a small office designing mostly reinforced
> concrete
> > buildings, and to tell you the truth, I find the job to be very
> > disappointing.  The pay is definitely not as good as in other areas
> (like
> > industrial engineering), and the job really gets to be boring sometimes.
> > I mean, what difference will it make if you try to do a good job and try
> > design economically for the client?  Will he notice? I think certainly
> > not.  The thing is, at least here in Chile structural engineering really
> > carries some status in college because it's considered to be one of the
> > more difficult areas of engineering, and the smartest kids here in Chile
> > prefer to study engineering rather that medicine or law, like in the
> > States.  Now I don't regret having studied structural engineering, I
> liked
> > studying it, but working, now that's a different story.  I don't want to
> > spend the rest of my life taking orders from the big man in the project
> > (architect), so I've already started to look for a job in another area.
> > Does this happen to engineers in other countries?
> >
> > just my 2 pesos worth,
> >
> > Tomas Matta
> > Ingeniero Civil, PUC
> > Santiago, Chile
>
>

```