Introducing Wood: Facts for All who Handle it |
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Page 23
... knot hole behind it . Neither tight nor loose knots need show any signs of decay . If they do , they should be classified as rotten or decayed knots . These develop as a result of the broken ends of the branch collecting moisture and ...
... knot hole behind it . Neither tight nor loose knots need show any signs of decay . If they do , they should be classified as rotten or decayed knots . These develop as a result of the broken ends of the branch collecting moisture and ...
Page 24
... knot . It is therefore possible to cut a large plank with a knot completely enclosed — a fact that does not come to light until the piece is resawn to a smaller dimension . NATURE OF KNOTS . It is often asked why knots should be ...
... knot . It is therefore possible to cut a large plank with a knot completely enclosed — a fact that does not come to light until the piece is resawn to a smaller dimension . NATURE OF KNOTS . It is often asked why knots should be ...
Page 148
... knots . On the basis of a 3 in . × 9 in . deal 16 ft long we would be given the following tolerances-- 1st Quality . Up to 4 knots of in . diameter . ( N.B. Pin knots are not classed as a defect . ) 2nd Quality . Up to 4 knots of 1 † in ...
... knots . On the basis of a 3 in . × 9 in . deal 16 ft long we would be given the following tolerances-- 1st Quality . Up to 4 knots of in . diameter . ( N.B. Pin knots are not classed as a defect . ) 2nd Quality . Up to 4 knots of 1 † in ...
Contents
CHAPTER I | 1 |
FIG PAGE 1 Section of a Tree showing its Circulation | 4 |
Leafs Circulation | 6 |
58 other sections not shown
Common terms and phrases
adhesive American annual rings applied bark beam beech beetle birch blade Borneo branches Canada Cedar cell cavities cell walls cent centimetres centre colour commercial compression creosote creosote oil cross-cut cubic foot defect described develop diameter dimensions divisor Douglas fir drying durable Eastern hemlock edges Europe European face feature feet fibres figure forests ft³ fungus Gaboon glue glued grading rules grain grown hard hardwoods heartwood important inch irregularities knots lb/ft³ length lignin lineal foot machine mahogany measurement method moisture content piece pitch pine planing plank plywood produce purposes quarter girth Queensland rays redwood referred resin result sapwood sawn Scots pine shake shrinkage side softwood species split spring spruce square standard strength suitable summer growth surface Teak teeth term texture thickness timber tissues tree trunk usually veneers vessels Walnut weight Whilst whitewood width دو وو