03 May 2016

Just another day... corrosion-resistant fasteners

"1.    Where rough carpentry is exposed to weather, in ground contact, or in area of high relative humidity, provide fasteners with hot-dip zinc coating complying with ASTM A153/A153M of Type 304 stainless steel."

Galvanized stainless steel! I wonder what they want for below-grade fasteners. 
Maybe that "of" near the end of the sentence should have been "or".

8 comments:

  1. Is there any reason to specify both A153 and A153M? Doesn't the first also include the second?

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  2. I've often wondered why both versions are cited.

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  3. Having specified architectural products for more than 2 score years, I have always referenced the imperial and not the metric … unless mandated by the Owner. My current firm has taken the ‘official’ position of using both, since ASTM uses both in their ‘official’ title of a standard, when applicable. Hence my firm requires the use of the ‘official’ title and for the standard referenced in this posting would be “ASTM A153/A153M Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware.” Use of the metric drives me crazy, especially when no metric is referenced in the specification. Not my choice.

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    1. Sheldon: Did not know it would record me as 'unknown'. Dennis Buirge, RA, CSI, CCS, CCCA. Graduated 2 years before you from Penn State.

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    2. Happened to attend a box lunch today by a galvanizing company in business since 1890. He said they can/have galvanized carbon steel, weathering steel, AND stainless steel.

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    3. Thanks for the comments, Dennis. When citing a title I use whatever the publisher uses, but in an inline reference I omit the metric equivalent.

      I don't know how the comment process works. Some people have no problems, some show up as anonymous, and some can't comment at all.

      I know it is possible to galvanize some types of stainless steel, but I have not encountered it in construction. Did the galvanizing company way where it is used?

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  4. They did not, just that it could be done. I have yet to specify that or see it specified. BTW, I go by Denny.

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  5. See the next post for an item advertised as both stainless steel and galvanized. http://bit.ly/1YyN6pp

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