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re: welding rebar

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Chris,

According to the AWS Structural Welding Code:  Reinforcing Steel (ANSI/AWS
D1.4-92), ?When joining different grades of steels, the filler metal shall
be selected for the lower strength base metal?  (para. 5.1.2).  For
example, if an A36 member is to be welded to an A706 bar, an E70 electrode
is required.

The D1.4-92 code additionally states that ?when reinforcing steel is welded
to primary structural steel members, the provisions of the latest edition
of ANSI/AWS D1.1, Structural Welding Code ? Steel shall apply to the
structural steel component? (para. 1.2.1).  Therefore, if the embed plate
is considered a ?primary? member, then the D1.1 code will apply to that
member.

If you have any additional questions, please feel free to contact me
directly at (216) 383-8187.

Scott Funderburk
Welding Design Engineer
The Lincoln Electric Company
http://www.lincolnelectric.com