GREEN. Freshly sawed or undried wood. Wood that has become completely
wet after immersion in water would not be considered green, but may be said
to be in the "green condition".
JOINT. The junction of two pieces of wood or veneer.
Butt joint. An end joint formed by abutting the squared ends of two pieces.
Edge joint. The place where two pieces of wood are joined together edge
to edge. commonly by gluing. The joints may be made by gluing two squared
edges as in a plain edge joint or by using machined joints of various kinds, such
as tongued-and-grooved joints.
End joint. The place where two pieces of wood are joined together end
to end. commonly by scarf or finger jointing
Finger joint. An end joint made up of several meshing wedges or fingers
of wood bonded together with an adhesive. Fingers are sloped and may be cut
parallel to either the wide or edge faces of the piece.
Lap joint. A joint made by placing one member partly over another and
bonding the overlapped portions.
Scarf joint. An end joint formed by joining with glue the ends of two
pieces that have been tapered or beveled to form sloping plane surfaces. usually
to a feather edge, and with the same slope of the plane with respect to the length
in both pieces. In some cases, a step or hook may be machined into the scarf
to facilitate alinement of the two ends, in which case the plane is discontinuous
and the joint is known as a stepped or hooked scarf joint.
Starved joint. A glue joint that is poorly bonded because of an insuffi-
cient quantity of glue in the joint.
KNOT. That portion of a branch or limb which has been surrounded by
subsequent growth of the stem. The shape of the knot as it appears on a cut sur-
face depends on the angle of the cut relative to the long axis of the knot.
LAMINATED WOOD. An assembly made by bonding layers of veneer or
lumber with an adhesive so that the grain of all laminations is essentially parallel.
MOISTURE CONTENT. The amount of water contained in the wood,
usually expressed as a percentage of the weight of the oven dry wood.
PRESERVATIVE. Any substance that. for a reasonable length of time, is
effective in preventing the development and action of wood-degrading fungi,
borers of various kinds, and harmful insects that deteriorate wood.
ROT. (See DECAY).
SHAKE. A separation along the grain, the greater part of which occurs be-
tween the rings of annual growth. Usually considered to have occurred in the
standing tree or during felling.