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Galvanizing A153 Class B-1 vs. B-2

Specifying brick ties, what's the difference between ASTM A153 Class B-1 and Class B-2?

Rick Oja
architect - Berlin, Connecticut
April 18, 2008

Sir -

The brick ties I have seen over the years are usually a very thin material (22 ga.?) This would put them into a different class than you mentioned. ASTM A153 /A class B-3, which calls for an average coating thickness of 2.2 mils. Classes B-2 & B-3 are applicable only if the part is over 15" in length.

David Jaye
Houston, Texas
May 22, 2008

adv.
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