Wood Handbook: Wood as an Engineering Material. By Forest Products Laboratory, Forest Service, U. S. Dept. of Agriculture, Volumes 72-974 |
From inside the book
Results 1-5 of 44
Page 3-7
... coatings , such as varnish , lacquer , or paint . The practical objective of all wood seasoning , handling , and storing meth- ods should be to minimize moisture content changes in wood in service . Favored procedures are those that ...
... coatings , such as varnish , lacquer , or paint . The practical objective of all wood seasoning , handling , and storing meth- ods should be to minimize moisture content changes in wood in service . Favored procedures are those that ...
Page 3-19
... coatings and finishes , other chemical treatments , and preservation . THERMAL PROPERTIES Four important thermal properties of wood are ( 1 ) thermal conductivity , ( 2 ) specific heat , ( 3 ) thermal diffusivity , and ( 4 ) coeffi ...
... coatings and finishes , other chemical treatments , and preservation . THERMAL PROPERTIES Four important thermal properties of wood are ( 1 ) thermal conductivity , ( 2 ) specific heat , ( 3 ) thermal diffusivity , and ( 4 ) coeffi ...
Page 7-3
... so variable that their influence on withdrawal resistance cannot be adequately evaluated . A common surface treatment for nails is the so - called cement coating . Cement coatings , contrary to what the name implies , do not include 7-3.
... so variable that their influence on withdrawal resistance cannot be adequately evaluated . A common surface treatment for nails is the so - called cement coating . Cement coatings , contrary to what the name implies , do not include 7-3.
Page 7-4
... coating is removed in driving . Some of the coating may also be removed in the cleat or facing member before the nail penetrates the foundation member . Good - quality cement coatings are uniform , not sticky to the touch , and cannot ...
... coating is removed in driving . Some of the coating may also be removed in the cleat or facing member before the nail penetrates the foundation member . Good - quality cement coatings are uniform , not sticky to the touch , and cannot ...
Page 7-8
... coatings , gage , crown width , and length . These fasteners are avail- able in clips or magazines to permit their use in pneumatically operated portable staplers . Most of the factors that affect the withdrawal and lateral loads of ...
... coatings , gage , crown width , and length . These fasteners are avail- able in clips or magazines to permit their use in pneumatically operated portable staplers . Most of the factors that affect the withdrawal and lateral loads of ...
Contents
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Common terms and phrases
adhesives American Baldcypress beam bending bolt brown chemical clear wood coatings coefficient color compression connectors construction core decay deflection density diameter Douglas-fir durable Eastern eastern white pine edge effect face fiber Figure finish fire-retardant firestops flooring Forest Prod Forest Serv formula glue gluing grading rules Green growth ring hardwoods heartwood heat hemlock inches insulation interior joints knots laminated load manufacture maple material maximum mechanical properties moderately modulus of elasticity modulus of rupture moisture content nails ovendry paint panels parallel to grain particleboard pascals Kilo percent moisture content piece plywood preservative ratio resin sapwood shear shearing strength shrinkage side southern pine species specific gravity spruce stain Standard straight grained strength properties structural surface Sweetgum Table temperature tensile strength tension tests thermal thickness timbers tion treatment trees ture United values veneer Virola western hemlock western larch Western redcedar width
Popular passages
Page 3-6 - ... the ratio of the ovendry weight of a sample to the weight of a volume of water equal to the volume of the sample at some specific moisture content, as green, air-dry, or ovendry.
Page 3-6 - Shake. A separation along the grain, the greater part of which occurs between the rings of annual growth, Side cut.
Page 3-1 - Fiber-saturation point. The stage in the drying or in the wetting of wood at which the cell walls are saturated and the cell cavities are free from water.
Page 3-2 - ... is more often used. Coarse-grained wood: Wood with wide and conspicuous annual rings; that is, rings in which there is considerable difference between springwood and summerwood. The term is sometimes used to designate wood with large pores, such as oak, ash, chestnut, and walnut, but in this sense the term "coarse textured
Page 3-3 - HEARTWOOD. The wood, extending from the pith to the sapwood, the cells of which no longer participate in the life processes of the tree. Heartwood may be infiltrated with gums, resins, and other materials which usually make it darker and more decay-resistant than sapwood.
Page 3-7 - ... tangential — strictly, coincident with a tangent at the circumference of a tree or log, or parallel to such a tangent. In practice, however, it often means roughly coincident with a growth ring. A tangential section is a longitudinal section through a tree or limb perpendicular to a radius. Flat-grained lumber is sawed tangentially.
Page 3-3 - Encased knot: A knot whose rings of annual growth are not intergrown with those of the surrounding wood.
Page 3-2 - ... hour. Fire-retardant chemical. A chemical or preparation of chemicals used to reduce flammability or to retard spread of flame. Fire stop. A solid, tight closure of a concealed space, placed to prevent the spread of fire and smoke through such a space.
Page 3-3 - According to specification it may be solid or glued up; rough or surfaced; semifabricated or completely fabricated. hardwoods — generally one of the botanical groups of trees that have broad leaves in contrast to the conifers or softwoods. The term has no reference to the actual hardness of the wood. heartwood...
Page 3-5 - The small, soft core occurring in the structural center of a tree trunk, branch, twig, or log. Pith fleck. — A narrow streak, resembling pith on the surface of a piece; usually brownish, up to several inches in length; resulting from burrowing of larvae in the growing tissues of the tree.