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Re: ASTM A992 Questions

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Tom;

I haven't read the standard as yet but I would assume that the test would
depend on your application.  This is likely obvious but thick plates with
though wall forces ( i.e. MC welds) would need UT at least at some point,
Charpy tests if cyclic loading was an issue, Max tensile if yield points
(Mp) where critical, etc.  These are the easy ones.  Some of the other tests
I'm less clear on their specific application though welding and weldability
are the issues) without researching.  Probably there are others on the list
with a better grasp on them.

As far as seismic design goes well Charpy, Max Yield sound relevant.  The
rest would depend on the circumstance (Heavy sections, Weldments, etc.).
When and how much testing also would seem to depend on the application.

Maybe I should have waited to read the standard before replying but by then
we both would have forgotten about the question.  I'm a little more familiar
with floating things than shaking things.  Then again, floating things shake
to.

cmd

-----Original Message-----
From: Tom.Hunt(--nospam--at)fluordaniel.com <Tom.Hunt(--nospam--at)fluordaniel.com>
To: SEAINT(--nospam--at)seaint.org <SEAINT(--nospam--at)seaint.org>
Date: Monday, March 08, 1999 7:28 PM
Subject: ASTM A992 Questions


>     I just reviewed a recently released copy of ASTM A992, "Standard
>     Specification for Steel for Structural Shapes For Use in Building
>     Framing".  This is the new ASTM that consolidates AISC Technical
>     Bulletin 3 for ASTM A572 Grade 50.  No big changes from Bulletin 3 but
>     I have the following two questions:
>
>     1.  The chemical and basic tensile strength requirements are mandatory
>     however the testing requirements are listed as "supplemental" and
>     section 1.2 specifically states "Such requirements apply only when
>     specified in the purchase order".  My question is, which of the 8
>     supplemental tests should we be calling out as a minimum?  The 8 tests
>     are Vacuum Treatment, Product Analysis, Charpy V-Notch Impact Test,
>     Ultrasonic Examination, Bend Test, Maximum Tensile Strength, Fine
>     Austenitic Grain Size, and Charpy V-Notch Impact for Groups 4 and 5.
>
>     2.  Should ASTM A992 and the testing from question 1 be used only for
>     welded moment frames or should it also apply to eccentric and/or
>     special concentric braced frames?  I am assuming a project in Southern
>     California or other high seismic zones.
>
>     Thomas Hunt, S.E.
>     Fluor Daniel
>
>
>