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Re: Steel beam grade

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Some of the contrat drawings that I've seen from that period generally 
indicated A572 steel when 50 ksi steel beams and columns were required 
instead of the usual A36 type steel.

However, the Grade 50 was specified along with the A572. I never saw just 
A572 indicated unless it was noted elsewhere on the drawings that this 
equated to the 50 ksi steel.

Charles Canitz
Annapolis, MD

-----Original Message-----
From: Will Haynes <gtg740p(--nospam--at)>
To: seaint-seaosc <seaint-seaosc(--nospam--at)>
Sent: Wed, Sep 26, 2012 1:40 pm
Subject: Re: [SEAINT-SEAOSC] Steel beam grade

Looking at my steel manual from that time I would also go with the 42ksi
assumption if that is all the information that is available. Page 5-215 of
the AISC 7th edition (Revised 6/73) has that ASTM 572-72 covered 6 grades
of steel with 42 ksi being the minimum.


On Tue, Sep 25, 2012 at 3:42 PM, Drew Morris <dmorris(--nospam--at)> wrote:

> I am looking at a building designed in 1973.  The general notes call out
> that beams with depths greater than 10' shall be "572 STEEL". Thereis no
> mention on grade or required yield stress.  Looking at older AISC
> manuals, A572 steel has a minimum yield of 42 ksi.  Would it be safe to
> assume that the steel meets this?
> --
> *Drew Morris, PE*| /Project Engineer/
> BBFM Engineers, Inc. <A 
> HREF="";></A - 
>> 510 L Street, Suite 200 | Anchorage, Alaska

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