Take a look at the PDF at this site, specifically, chapter 14:

http://www.fpl.fs.fed.us/documnts/fp.../fplgtr113.htm

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PDQ

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"Frank Warner" wrote in message . ..
| Where can I find information detailing standards for pressure-treated
| lumber?
|
| Looking for some minimum weathering specifications. PT Green Doug Fir
| vs PT Redwood, number of years in-ground before rot, number of years
| above ground, etc.
|
| Does the lumber industry or any other agency publish standards like
| these, roughly equivalent to milspec for other materials?
|
| -Frank
|
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| Here's some of my work:
| http://www.franksknives.com/