disconnected from my brain! <grin>
Scott
Adrian, MI
...... Original Message .......
On Fri, 8 May 2009 08:15:40 -0800 "Jared Keyser" <jkeyser@lcmf.com> wrote:
>Scott,
>
>Just a correction : Ratio of actual ultimate tensile strength to actual
yield strength must be greater than 1.25 (i.e. increased ductility) not
less than.
>
>Jared
>
>
>From: "Scott Maxwell" <smaxwell@umich.edu>
>To: <seaint@seaint.org>
>Subject: RE: concrete reinforcing steel
>
>This is a multi-part message in MIME format.
>
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>ACI 318 has required A706 (aka "weldable" bar) for seismic use for quite a
>while. As an alternative, you can use A615 if the ratio of ultimate to
>yield is less than 1.25 and as long as the actual yield is not more than 18
>ksi higher than specified. I am pretty sure the same provisions were in
the
>1997 UBC (too lazy to dig it out at the moment to check) and I would assume
>that CA does not modify that provision when they adopted the IBC (and thus
>ACI 318-05 by reference). See chapter 21 of ACI 318. So of this might
have
>changed a hair as I was using my 2002 ACI 318...again too lazy to go find
>the 2005.
>
>Regards,
>
>Scott
>Adrian, MI
>[winmail.dat]
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