Reply by JJohnston

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Posted on why so up tight!?

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1572 posts in 1794 days

#1 posted 1164 days ago

Tension (also called “reaction”) wood usually comes from branches. A branch is under continual bending stress its entire life, moreso the more horizontal it is. The wood on the bottom is under compression, and the top is in tension. These stresses are locked in as it grows, so it does crazy things when the bending stress is relieved. This can also happen with a trunk that grew bent, or not vertical.

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