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Galvanized Structural Steel A440

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We are analyzing a sub station dead end tower that specifies the above referenced grade of steel.  ASD Table 1 page 1-7 references an A441 designation.  The tower was originally designed in 1965.  Is this a typo on the original plans?  If not where can I obtain information for this type of steel.  The member in question is a steel angle.

Thank you for your assistance

David A. Hall, S.E., P.E.
Senior Structural Engineer
David Evans and Associates, Inc.
2828 SW Corbett Ave
Portland, OR 97201
503-499-0280
Fax 503-223-2701
E-Mail dahl(--nospam--at)deainc.com