dead knot

dead knot

A knot that has lost its fibrous connection with the surrounding wood; it can easily loosen and fall out or be knocked out.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Maximum KD for each knot was measured on the radial surface perpendicular to the knot at the border between sound and dead knot. For sound knot disks the KD measurements were based on the branch stump at a distance from the stem surface approximately equal to the KD (branch measurement).
"We do not want this knot to become tighter and tighter, so that it even becomes a dead knot," Wang, who was in the Philippines for talks on Tuesday, told reporters in Manila.
"But in breast cancer cells, there is no coordinated transcription site pairing, the DNA loops become tangled and the entire gene complex shuts down in a dead knot."
For instance, Fong probably errs in being too literal for most non-Chinese readers when he mistranslates the Chinese term for a "tight knot" as a "dead knot"--the overly literal translation of sijie that only a speaker of Chinese would understand.
The effect of errors in dead knot border radial position was less pronounced but still substantial for higher error levels, while errors in knot rotational position could be neglected even for the highest magnitudes of error tested.
This area is almost exclusively located around sound knots, whose fibers are intergrown with the wood fibers of the stem, compared with a dead knot, which is not connected to the normal wood in the same fashion.
Figure 3a shows an image that contains a dead knot as a principal object and two pockets as secondary defects in the upper left part of the image.