These results are maybe due to the fact that these types of timbers in the structural size have the high possibility containing internal growth defects as it increased in size in the form of knots, zones with compression wood
, and whole lot more.
With conifers, the reaction is weaker compression wood
on the side toward the lean, rarely a serious problem, but be aware of it and leave a larger hinge.
It decreases rapidly in the juvenile wood portion and remains more or less stable in the mature wood portion, unless compression wood
After tilting, conifers normally start to form a specialized wood at the lower side of an inclined trunk, so-called compression wood
The reaction wood of gymnosperms is called compression wood
and is produced along the lower side of the leaning stems or branches, causing straightening by expanding and pushing the trunk upright again.
T 267 cm-05 Compression wood
identification in pulpwood
It is characterized by shorter cells, larger microfibril angles, more compression wood
, different specific gravity and higher lignin content (Zobel and van Buijtenen, 1989).
Effect of compression wood
on leaching and fixation of CCA-C treated red pine.
In addition, there are limits on potential decay associated with knots, shake, splits, and compression wood
and spiral grain are also more prevalent in juvenile wood than in mature wood and contribute to excessive longitudinal shrinkage.
The variables analyzed were: the amount of compression wood
produced, ovendry specific gravity (SG), modulus of rupture, and modulus of elasticity (MOE).
5 - h Compression wood
Accepted 2/5 of the cross section Slope of grain 1:6 (16.