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RE: Steel test reports below specified strength

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Title: RE: Steel test reports below specified strength

If the yield vallue on the mill test report is less than 50 ksi and you specified a steel grade that has Fy = 50 ksi (such as ASTM A992, A572 grade 50, or similar), the steel does not meet the specification and you can reject it since it does not meet the specification. Is this the case or are you comparing the mill cert yield value to coupon testing conducted by the fabricator, yourself or a party other than the mill?

Charlie

-----Original Message-----
From: Randy Diviney [mailto:rsdiviney(--nospam--at)hayeslarge.com]
Sent: Monday, January 10, 2000 9:41 AM
To: seaint(--nospam--at)seaint.org
Subject: Steel test reports below specified strength


Recently I have been contacted by a steel fabricator about some mill test
reports being under the specified strength. I have specified 50 ksi steel
for the wide flange columns. The highest value in the test results is 40
ksi. The fabricator has requested we use this steel to expedite the
project. Initially I told him I would check the design of the approximately
30 columns affected by this. After thinking about it, I don't think I
should have to do anything other than reject the steel. I tried using 36
ksi in my original design, but with the given parameters for the project 50
ksi was necessary. I always try to work with the fabricators, this seems a
bit much. Any comment or suggestions would be appreciated.


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