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RE: Butane tank

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The method for determing the stresses in the tank is called the "Zick"
method by L. P. Zick of Chicago Bridge and Iron Company.  The material can
be located from Steel Plate Engineering Data Volume 2 by Steel plate
Fabricators Assoc http://www.spfa.org . or Pressure Vessel Handbook, Eugene
F. Megyesy, http://www.pressure-vessel.com.


Ron Hill
Hill Consulting Engineering
Birmingham, AL

-----Original Message-----
From: DougSnow(--nospam--at)aol.com [mailto:DougSnow(--nospam--at)aol.com]
Sent: Monday, February 08, 1999 7:20 AM
To: seaint(--nospam--at)seaint.org
Subject: Butane tank


Hello all,

I have been asked to design the supports for an existing butane tank that is
to be relocated.  The tank is 12 feet in diameter and 41 feet long plus 6
foot
hemisphere caps at each end.  The shell is approximately 1/2 inch thick.
Research is being done to determine the type of steel it is although the
tank
is approximately 25 years old.

I have found a method in a text book for determining the stresses in the
tank
shell based on two supports.  Is there an accepted method of determining
these
stresses and/or do you have any suggested references?

Thanks in advance.

Doug Snow
Snow and Associates, Inc.
Scottsdale, Arizona