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Re: prestressed concrete

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David,

We have done alot of post-tensioned structures.  Locality is typically not a
problem, there are many companies that provide P/T construction services and
most will travel economically.  Post-tensioned is pre-stressed concrete, but
this is not the same as pre-cast.  I have never worked on a pre-cast
project.  I am not a fan of pre-cast construction.

Mild reinforcing is included in all post-tensioned work.  I am not sure what
you refer to as a mixed project.  Would cast in place walls with P/T slabs
be a mixed project?   If so the answer is all of our P/T projects are mixed
to some degree.

Paul Feather
----- Original Message -----
From: "david adie" <dadie(--nospam--at)bjgse.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, September 08, 2000 8:12 AM
Subject: prestressed concrete


> i am currently enrolled in a prestressed concrete class.  my instructor
> states that the reason prestressed concrete is not used more in my region
is
> because there is not a "plant" in the area.  this results in large
> transportation costs and the cost effectiveness decreases.
>
> here is the question:
> for you engineers working in large markets (ie. big cities) where there
are
> prestress plants - what percentage of your concrete design is done with
> prestressed vs. typical reinf. design?  also, out of your prestress
design -
> what percentage is pre-tensioned vs. post-tensioned?  also, out of your
> prestress design - what percentage includes a mixed system with typical
> reinf?
>
> any answers would be appreciated.  thanks in advance.
> da
>
>
>
>
>
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