Posted by jdemaris on November 07, 2010 at 07:52:33 from (72.171.0.143):
I just refreshed my memory, reading a huge study done by our USA Federal government, starting in 1909 and going up the the 1990s. It's amazing how much time and money went into studying fenceposts.
In brief- creosote treated southern yellow pine often lasted 50-60 years. CCA treated southern yellow pine 30-40 years.
Untreated natural woods?
This surprises me since when I first worked for building contractors in the 60s, Redwood was the #1 outdoor wood. According to tests though, it rots fast when in the ground.
Average life of natural fenceposts tested:
Black Locust - 37 years Rocky Mountain Juniper - 37 years Arizona Cypress - 25 years Osage Orange - 25 years Western Red Cedar - 21.3 years Arizona White Oak - 20 years Mulberry - 19 years American Chestnut - 19 years Green Ash - 18.7 years Mesquite - 18 years Northern White Cedar - 15 years White Oak - 10 years Honey Locust - 5 years Redwood - 3.6 years
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Today's Featured Article - An Old-Time Tractor Demonstration - by Kim Pratt. Sam was born in rural Kansas in 1926. His dad was a hard-working farmer and the children worked hard everyday to help ends meet. In the rural area he grew up in, the highlight of the week was Saturday when many people took a break from their work to go to town. It was on one such Saturday in the early 1940's when Sam was 16 years old that he ended up in Dennison, Kansas to watch a demonstration of a new tractor being put on by a local dealer. It was an Allis-Chalmers tractor dealership,
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