Douglas fir

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Douglas fir:

see pinepine,
common name for members of the Pinaceae, a family of resinous woody trees with needlelike, usually evergreen leaves. The Pinaceae reproduce by means of cones (see cone) rather than flowers and many have winged seeds, suitable for wind distribution.
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Douglas fir

A strong, medium-density, medium-textured softwood; widely used for plywood and lumber in construction.

ebony

Wood of a number of tropical species, usually distinguished by its dark color, durability, and hardness; used for carving and ornamental cabinetwork.

elm

A tough, strong, moderately high-density hardwood of brown color; often has a twisted interlocked grain; used for decorative veneer, piles, and planks.A softwood of the temperate climates including Douglas fir, white fir, silver fir, and balsam fir; used for framing and interior trim.

folded plate

A thin skin of plywood reinforced by purlins to form tructures of great strength.

glue-laminated arch

An arch made from layers of wood that are joined with adhesives. The glued joints transmit the shear stresses, so the structure acts as one piece capable for use in structural arches and long-span beams.

gum

A moderately high-density hardwood, whitish to gray-green in color and of uniform texture; used for low-grade veneer, plywood, and rough cabinet work.

hardboard

A dense smooth-surfaced composition board composed of highly compressed fibers; one such type is called Masonite®.

hardwood

Timber from all trees except the conifers, which are called softwood.

heartwood

The center portion of a tree trunk that is no longer growing or carrying the sap; often harder and denser.

hemlock

Wood of a coniferous tree; moisture-resistant, soft, coarse, and uneven-textured; it splinters easily and is inferior for construction use.

hickory

A tough, hard, strong wood; has high shock resistance and high bending strength.

laminated timber

Timber beam or arch manufactured from four or more layers of wood, usually about 1 inch thick, bonded together with waterproof adhesive.

larch

A fine-textured, strong, hard, straight-grained wood of a coniferous tree; heavier than most softwoods.

lath

Narrow strips of wood that serve as a base for plaster, usually nailed to studs in walls or rafters in ceilings.

limba

A straight-grained, fine-textured wood used for interior paneling.

locust

Wood of the locust tree; coarse-grained, strong, hard, decay-resistant, and durable.

mahogany

A straight-grained wood of intermediate density, pinkish to red-brown in color; used primarily for interior cabinetwork and decorative paneling.

maple

A hard, tough, moderately high-density wood, light to dark brown in color, with a uniform texture; used for flooring and wood trim.

Douglas Fir

 

(Pseudotsuga menziesii’, better known by the incorrect name P. taxifolia), an evergreen coniferous tree of the family Pinaceae, named for the Scottish botanist D. Douglas (1798-1834). The trees grow 50-75 (100) m tall and 1.2 to 2 (4) m in diameter. The crown is cone-shaped. The needles are flat and stand out in all directions. The female cones are 7 to 10 cm long with rounded seed scales; the covering scales are narrow with a bifurcated tip and a well-developed central vein that extends in an awl-like fashion above the lobes. The tree suffers (and sometimes dies) from spring and autumn frosts and prolonged drought, but it is relatively tolerant of various types of soil. The Douglas fir begins to bear cones after ten to 25 years and can live up to 500 years. It grows wild along the Pacific coast of North America. In the USSR it is found in gardens and parks of the Caucasus and in the southern Ukraine. The wood is used in buildings, ships, furniture, and railroad cars. The bark contains tannins.

S. K. CHEREPANOV

Douglas fir, Oregon pine, red fir, yellow fir

A strong, medium-density, medium- to coarse-textured softwood; widely used for plywood and as lumber and timber in construction work.
References in periodicals archive ?
5 metres tall Douglas fir at Lake Efyrnwy was named the tallest tree in Wales and equal tallest in the UK.
The 212ft Douglas fir was one of several at the Hermitage in Dunkeld given a trim and cleaned up to mark the event.
Let's face it, you can't make a cell phone tower look like a Douglas fir," said Howard Bonnett, a retired botanist.
Douglas fir, British Columbia pine, Columbia pine, Oregon pine, Douglas spruce, yellow spruce, red spruce, Douglastree
IT TOOK them 18 hours to travel 70 miles, but two giant Douglas fir trees finally completed their unhurried journey to the Royal Welsh showground.
Douglas firs tend to move in around oak trees, and the oaks can't tolerate the shade that the firs create and so "quickly go into decline," Steel said.
Mazen and Ziad, 4, were also determined to get the tree to hang their favorite Christmas gloves and balls, and continued the hunt through the noble and Douglas fir pines, finding the ``perfect one'' in every other tree.
The grey of the stucco render blends with the bark of the Douglas firs and the slim timber frames of the doors and windows are stained a rich rust to mimic the trunks of waxy leafed arbutus trees on the north side of the site.
With a bit of luck, they established an even more precise connection by comparing rings in Douglas firs found in Lake Washington with rings in a Douglas fir found in the tsunami deposit discovered by Atwater.
The wood came from trees that were among the 28 Douglas firs cut because they were threatening to crowd out a 5-acre area of oak trees in the southwest corner of the park, Alfriend said.
Because of their height and width, Douglas firs yield record amounts of usable board feet of lumber: One Douglas fir is documented as supplying more than 70,000 feet of top grade lumber.
Rite Aid is one of the largest retailers of live Christmas trees on the West Coast offering Douglas Firs, Grand Firs and Noble Firs ranging from $18 to $50.