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RE: Steel Modulus and Strength

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FYI, I don't believe an MD even has a science degree. I think it's a Medical
ARTS degree.

Concrete is much more predictable than people anyway :o).

Regards,

Bill Allen, S.E. (CA #2607)
ALLEN DESIGNS
Laguna Niguel, CA
http://www.AllenDesigns.com

||As for me, I'm not sensitive to the assertion that structural
||engineering is
||backward relative to other disciplines.  My daughter is a
||third year medical
||student at the University of Iowa; I think she'd be quick to
||say an MD does
||not practice science.  She might even say that MD's "treat
||for diseases and
||maladies we don't know.....utilizing salves, ointments, oils,
||and drugs
||whose behavior we don't understand....etc...etc...etc...."  Of course,
||medicine has a basis in science, just like engineering.  MD's
||and structural
||engineers must "bracket" their solutions . . . just like the rocket
||scientists at NASA, where they do work that is close enough for the
||government.
||
||John P. Riley, SE
||Riley Engineering
||Blue Grass, Iowa
||
||
||----------------------------------
|| I know that. It doesn't make any difference as to the amount of
||reinforcement one utilizes....
||
||It does however make a difference when one is attempting to
||step out of the
||cook-book code driven pseudo-design mentality, and truly
||wants to engineer a
||structure...
||
||I believe responses like that perpetuate the backwardness of
||civil/structural engineering in relation to other disciplines.
||
||It's like saying...we don't really know ...but it's close enough for
||government work.....
||
||It perpetuates the definition of structural engineering ... which
||interestingly enough was removed from the SEAOC web site home
||page...that we
||"design for forces we don't know.....utilizing materials
||whose behavior we
||don't understand....etc...etc...etc...."
||
||If anyone out there has a less condescending or simplistic
||answer, and truly
||knows which value is closer to the actual value...please let
||me know...
||
||jim
||
||> >It doesn't make any difference.
||> >
||> > It doesn't make any difference.
||> >
||> > It doesn't make any difference.
||> >
||> > A. Roger Turk, P.E.(Structural)
||> > Tucson, Arizona
||> >
||> > Jim Korff wrote:
||> >
||> > >>Is the correct E Modulus for steel rebar 30,000 ksi  or
||29,000 ksi ??
||> >
||> > Is the correct yield strength of  Grade 60 rebar 60 ksi
||or 58 ksi ??
||> >
||> > Is the correct yield strength of  Grade 40 rebar 40 ksi
||or 38.7 ksi ??<<
||> >
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