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RE: STEEL STRESSES? IN 1900-1910 YEARS

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Based on "Iron and Steel Beams 1873 to 1952" by AISC, the steel used for
buildings during that period was ASTM A9 with the following specifications:

Rivet Steel	Tensile Strength=50-60 ksi
Medium Steel	Tensile Strength=60-70 ksi

Minimum Yield Point for both steels was set at 1/2 Tensile Strength.

Unit stresses used for allowable loads as published by the mills at that
time (Cambria Steel Co., Carnegie Steel Co. and Bethlehem Steel Co.) were
all consistent at 16 ksi for buildings.

If you need section properties for specific beams, you can either order this
publication from AISC or, in a pinch, e-mail me privately and I will provide
the information you need.

Regards,
Bill Allen

-----Original Message-----
From: TahirQ(--nospam--at)aol.com [mailto:TahirQ(--nospam--at)aol.com]
Sent: Saturday, September 12, 1998 9:32 AM
To: seaint(--nospam--at)seaint.org
Subject: STEEL STRESSES? IN 1900-1910 YEARS


STRUCTURAL ENGINEERS:

I am evaluating old steel framing which was built in NYC in 1900-1910 years.
What would be the steel stress values to be used, any good references, ANY
HELP.
Thanks in advance.

REGARDS,
Tahir