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Moisture content of Wood?

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Hi Everyone,

For an underground house of Oehler design, can anyone give me an approximate final moisture content of the walls that are in close proximity to the backfill? I need to know so I can check the MC of the planks prior to installation  to see if I'll have a shrinkage or expansion issue or preferably, no issue at all. The information should be available in the Permanent Wood Foundation manual you can download but I can't seem to find it anywhere.
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Location: New Jersey (for now!)
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Hi JP,

There is an excellent article I like to refer people to pertaining to wood:

It's pretty well packed with good stuff.  Here's a quote:

"Wood used inside of homes as finished trim, cabinets and flooring, should be installed at a MC close to 8%. Wood used in exterior applications is a different story – it depends on where you live. In New England 14% MC is a good target. In Tucson, a 6% MC would be a better mark. The USDA Forest Products Laboratory in Madison has a pamphlet (FPL-RN-0268) listing outdoor EMC’s for about 350 cities worldwide."

As with almost all things in building, the answer depends, but I've attached the FPL-RN-0268 pamphlet and the link is:

That being said, I wouldn't have the buried wood in contact with the soil . . .

Filename: Outdoor-Equilibrium-Moisture-Content-of-Wood-(fplrn268).pdf
Description: Outdoor Equilibrium Moisture Content of Wood (fplrn268).pdf
File size: 568 Kbytes
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