The book Proceedings of the Annual Convention 30 (1929) was written by author American Railway Engineering Association Here you can read free online of Proceedings of the Annual Convention 30 (1929) book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Proceedings of the Annual Convention 30 (1929) a good or bad book?
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— One oval or circular in form. Spike Knot. — A branch or limb sawed in a lengthwise direction. Quality Sound Knot. — One solid across its face, as hard as the surrounding wood, and showing no indications of decay. It may vary in color from red to black. Unsound Knot. — One solid across its face but containing incipient decay. Decayed Knot. — One softer than the surrounding wood and containing advanced decay. Tight Knot. — One so fixed by growth or position that it will firmly retain its place ...in the piece. Intergrown Knot. — One whose rings of annual growth are completely intergrown with those of the surrounding wood. Watertight Knot. — One whose rings of annual growth are completely intergrown with those of the surrounding wood on one surface of the piece, and which is sound on that surface. Encased Knot. — One whose rings of annual growth are not intergrown and homogeneous with those of the surrounding wood. The encasement may be partial or complete; or pitch or bark.
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