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Re: disortion from heating

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Dr. Richard Avent, et al, of LSU published a report titled,
"Heat-Straightening Techniques for Repair of Damaged Structural Steel in

The phone number for the Engineering Department is 225-388-5731.

Hope this helps.

Randy Russ, P.E.
Russ Engineering
-----Original Message-----
From: RoyLevy(--nospam--at) <RoyLevy(--nospam--at)>
To: seaint(--nospam--at) <seaint(--nospam--at)>
Date: Tuesday, January 05, 1999 6:40 PM
Subject: disortion from heating

>Many years ago I heard of a team of technicians who had developed a
>to straighten deformed steel bridge structures  in place by flame-
>To help me understand the principles, this is my question:
>Assume a steel plate say 3/8" thick by 4" wide and 3 ft long, simply
>at the ends, say resting on a pair of saw horses.   Heat is applied across
>top at the center, for example by welding a 1/4 x 4 " wide gusset plate at
>center, across  and perpendicular  to the plate ( 2  3/16"  f illet welds,
>'' long , for example)  .
>Will the center of the plate rise or will it sag ?  In another form, the
>question is which will prevail -  The loss of rigidity while the top is
>or the contraction effect upon cooling?