[Boatanchors] Rust, Coatings, etc.

[J. Forster]

I think the rust is basically a sacrificial coating and bleeds down as the
building weathers.

-John

================


> I think the John Hancock building in Chicago had that done to it.
>
> Rob
> K5UJ
>
> On Sun, Apr 7, 2013 at 9:42 PM, KA4INM <ka4inm at gmail.com> wrote:
>> On 04/07/13 22:38, Michael D. Harmon wrote:
>>
>> /*snip*/
>>
>>> Once they had the exterior of the building completed, they treated it
>>> with something that made it rust. Yes, that's right - as in the
>>> reddish-brown iron oxide. As first it looked pretty bad but after a
>>> while it settled into a deep red-brown color and actually looked sort
>>> of
>>> unobtrusive. Not what you'd expect from a big steel building covering
>>> several acres. I asked someone why they did that and was told that the
>>> rust was only surface deep and permanently protected the underlying
>>> steel from further corrosion.
>>
>>
>>   see:
>>   http://en.wikipedia.org/wiki/Weathering_steel
>>
>> --
>>   Ron  KA4INM - Youvan's corollary:
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