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Forgotten but not gone
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Welcome aboard rsk. I have never heard of it myself. Wood simply does not expand over time unless it takes up more moisture than what it had when you put it in service.
In timberframing, when you use it green which is what you are asking, you would practically have to submerge it to get it to expand.
Wodd, in service, will vary in mnoisture content and contract and expand with respect to this but over all, over the years in a somewhat stable environment, wood is going to reach EMC and until it does, it is going to shrink.
longitudinal shrinkage is quite minimal, but longitudinal expansion is a new one on me. I have to plead ignorance on it. I simply have never heard such a thing.
 
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