Wood Handbook: Basic Information on Wood as a Material of Construction with Data for Its Use in Design and SpecificationsU.S. Government Printing Office, 1935 - 326 páginas |
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American average bending birch boards bolt brown building coal-tar coal-tar creosote coating color column compression connectors construction cypress decay diameter dimension Douglas fir durable eastern Eastern hemlock edge face fiber stress finish flooring glue gluing grade grain green growth ring hardwoods heartwood hemlock hickory illus inches inches inches insulating joist joist and plank knots laminations length less linseed oil lumber Manufacturers Maple material modulus moisture content nails northern white paint parallel Percent Percent Percent perpendicular piece pigment piling plies plywood poles ponderosa ponderosa pine pounds proportional limit red cedar Redwood resistance safe load sapwood seasoned shear shrinkage side Sitka spruce softwoods southern yellow pine species spruce stain standard strength ratio structural surface termites tests thickness timber tion treatment trees U. S. Dept usually values veneer Western larch western red western red cedar white fir white pine width Wood Preservers zinc chloride
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Página 5 - Figure. The pattern produced in a wood surface by irregular coloration and by annual growth rings, rays, knots, and such deviations from regular grain as interlocked and wavy grain.
Página 4 - Durability. A general term for permanence or lastingness. Frequently used to refer to the degree of resistance of a species or of an individual piece of wood to attack by wood-destroying fungi under conditions that favor such attack. In this connection the term " resistance to decay
Página 5 - HARDWOODS. The botanical group of trees that are broadleaved. The term has no reference to the actual hardness of the wood. Angiosperms is the botanical name for hardwoods.
Página 6 - Millwork. — Generally all building materials made of finished wood and manufactured in millwork plants and planing mills are included under the term "millwork.
Página 265 - The specific gravity of the oil at 38° C., compared with water at 15.5° C., shall be not less than 1.03. 5. The distillate, based on water-free oil, shall be within the following limits : — Up to 210° C. not more than 5 per cent. Up to 235° C.
Página 6 - Sound Knot. — A sound knot is one which is solid across its face and which is as hard as the wood surrounding it; it may be...
Página 7 - Plywood. A piece of wood made of three or more layers of veneer joined with glue, and usually laid with the grain of adjoining plies at right angles. Almost always an odd number of plies are used to provide balanced construction.
Página 4 - The older stage of decay in which the destruction is readily recognized because the wood has become punky, soft and spongy, stringy, ringshaked, pitted, or crumbly. Decided discoloration or bleaching of the rotted wood is often apparent.
Página 12 - Gives the tree strength. F, pith is the soft tissue about which the first wood growth takes place in the newly formed twigs. G, wood rays connect the various layers from pith to bark for storage and transference of food.
Página 60 - G represents the specific gravity of oven-dry wood, based on the volume at the moisture condition indicated . * The load required to embed a 0.444-inch ball to one-half its diameter.