Need a book? Engineering books recommendations...

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

Re: Concrete vs. Steel

[Subject Prev][Subject Next][Thread Prev][Thread Next]
YOU CAN AVOID BRITTLE CONCRETE USING FIBER REINFORCED FIBERMESH CONCRETE


----- Original Message -----
From: Greg Smith <strusup(--nospam--at)gte.net>
To: <seaint(--nospam--at)seaint.org>
Sent: 23 Ekim 1999 Cumartesi 00:25
Subject: Re: Concrete vs. Steel


>      To be in charge of a project and prescribe the wrong material (even
for
> economical reasons) is like a doctor prescribing the wrong medicine
because
> the patient can't afford the right one.  In engineering as with medicine,
> this can lead to death.
>      I believe that concrete has been WRONGLY prescribed ANYWHERE in a
high
> seismic risk zone.  The EQ's in Turkey, Bay Bridge, Japan etc. are obvious
> proof of this.  Yes, it is possible to construct a concrete structure that
> will withstand a Richter 10 but THAT would be UNeconomical.
>      Granted that Northridge revealed problems with steel and brittle
> fracture, it will be easier to overcome this than to take the mass out of
> concrete.  Concrete has it's advantages but only in a compatible location.
>
> Greg in Oklahoma
> -----Original Message-----
> From: Fariborz Tehrani <fmtehrani(--nospam--at)hotmail.com>
> To: seaint(--nospam--at)seaint.org <seaint(--nospam--at)seaint.org>
> Date: Friday, October 22, 1999 12:56 PM
> Subject: Re: Concrete vs. Steel
>
>
> >Dear Scott
> >I'm not going to tell you about advantages and disadvantages of concrete
or
> >steel structures and the parameters which affect the material selection
> >procedure for a specific structure. You know that. So I think the best
> >answer is giving you a survey of my works. I have worked as a structural
> >engineer in Iran (you say Middle East) for more than 8 years. Here is
> >structural types that I designed:
> >1-Residential apartments and educational buildings (High schools, etc.)
> with
> >less than 4 stories: Concrete (Cement is more available than steel shapes
> >for ordinary owners).
> >2-Residential and Office buildings with more than 4 and up to 10 stories:
> >Concrete and steel (No preferences).
> >3-Residential and Office buildings more than 10 stories: Steel (because
of
> >pumping difficulties, construction speed, poor quality of ready mixed
> >concretes and so on).
> >4-Industrial frames with large spans: Steel (Steel structure
> >is lighter, can be built in parts- ready for installation in site, and
the
> >best thing is that they can reinstall and relocate!)
> >
> >I moved here in Los Angeles last year. You know that most of the small
> >buildings in LA have wood structure. But I'm in specialty structure
> >business. We use everything including steel, aluminium, stainless steel,
> >fabric, glass, ..., except concrete! Concrete hasn't have enough
> flexibility
> >for a decorative, exposed and lightweight structure.
> >
> >Good luck
> >
> >Fariborz Tehrani                       Phone: (310)509-8826
> >Civil Engineer                           Fax: (530)481-9532
> >BSCE, MSCE, PE                    Voice Mail: (877)743-6206
> >email: fmtehrani(--nospam--at)hotmail.com
> >
> >
> >
> >
> >>From: Scott Maxwell <smaxwell(--nospam--at)engin.umich.edu>
> >>Reply-To: seaint(--nospam--at)seaint.org
> >>To: seaint(--nospam--at)seaint.org
> >>CC: jwight(--nospam--at)umich.edu
> >>Subject: Concrete vs. Steel
> >>Date: Fri, 22 Oct 1999 09:47:04 -0400
> >>
> >>Dear fellow structural engineers:
> >>
> >>I have received a request from one of my professors from school.  He has
> >>been asked by ACI to look into the issue of the use of concrete vs.
steel.
> >>The question has been raised as to whether strucutural engineers are
more
> >>likely to pick steel over concrete, and if so...why?  I can give a fair
> >>answer for the Detroit area, but they are also looking for input
> >>nationally.
> >>
> >>So, I would appreciate it if you have any thoughts on the matter.  If
you
> >>have an opinion, then you can respond either to myself or to the list,
and
> >>then I will forward the information onto my professor.  I would also
> >>appreciate it if you could specific which area of the country (or world)
> >>you are from so that we can get an idea of "regional" preferences.
> >>
> >>BTW, there is a little bit of a time restraint...I need to get any
> comments
> >>forwarded by Thursday of next week (10/28) at the latest.
> >>
> >>Thanks much,
> >>
> >>Scott
> >>
> >>------------------------------------------
> >>Scott E. Maxwell, PE
> >>Structural Engineer
> >>
> >>SHG Inc.
> >>500 Griswold, Suite 500
> >>Detroit, MI  48226
> >>
> >>Phone: (313) 442-8253
> >>Fax:   (313) 442-8297
> >>
> >>Work Email:     smaxwell(--nospam--at)dt.smithgroup.com
> >>Personal Email: smaxwell(--nospam--at)engin.umich.edu
> >>------------------------------------------
> >>
> >
> >
> >
> >
> >______________________________________________________
> >Get Your Private, Free Email at http://www.hotmail.com
> >
>
>