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Wood - Characteristic of Commercial Wood


Quiz Questions

1.All wood is composed of cellulose, lignin, hemicelluloses, and minor amounts (5% to 10%) of extraneous materials contained in a cellular structure.
True
False
2. To use wood to its best advantage and most effectively in engineering applications, specific characteristics or physical properties must be considered.
True
False
3.The inherent factors that keep wood in the forefront of raw materials are many and varied, but a chief attribute is its availability in many species, sizes, shapes, and conditions to suit almost every demand.
True
False
4.Dry wood has bad insulating properties against heat, sound, and electricity. It tends to absorb and dissipate vibrations under some conditions of use, and yet it is an incomparable material for such musical instruments as the violin.
True
False
5.Trees are divided into two broad classes, usually referred to as hardwoods and softwoods. These names can be confusing since some softwoods are actually harder than some hard- woods, and conversely some hardwoods are softer than some softwoods.
True
False
6.What does table 1-1 illustrate about?
(Refer Pg 1-2)

Major resources of U.S. softwoods according to region
Average toughness values
Average coefficients of variation for some mechanical properties
None of the above
7.The most vigorously growing wood-based industries are those that convert wood to thin slices (veneer), particles (chips, flakes), or fiber pulps and reassemble the elements to produce various types of engineered panels such as plywood, particleboard, strandboard, veneer lumber, paper, paperboard, and fiberboard products.
True
False
8.American white ash is used principally for non-striking tool handles, oars, baseball bats, and other sporting and athletic goods.

True
False
9.Principal uses for the black ash group are decorative veneer, cabinets, millwork, furniture, cooperage, and crates.
True
False
10.Beech is used mainly in venetian blinds, sashes and doorframes, moulding, apiary supplies, woodenware, and boxes.
True
False
11.Black cherry is used principally for furniture, fine veneer panels, and architectural woodwork. Other uses include burial caskets, woodenware, novelties, patterns, and paneling.
True
False
12.Buckeye is suitable for pulping for paper; in lumber form, it has been used principally for furniture, boxes and crates, food containers, woodenware, novelties, and planning mill products.
True
False
13.The wood of honey locust (Gleditsia triacanthos) has many desirable qualities, such as attractive figure and color, hardness, and strength, but it is little used because of its scarcity.
True
False
14.The Red Oak is used principally for lumber, veneer, plywood, slack cooperage, railroad crossties, fuel, pulpwood, boxes and crates, furniture, interior moulding, and millwork.
True
False
15.What does figure 1-1 illustrate about?
(Refer Pg 1-15)

Cypress-tupelo swamp near New Orleans, LA
Wood is favored for waterfront structures
Ponderosa pine (Pinus ponderosa) growing in an open or park-like habitat
None of the above
16.Most redwood lumber is used for building. It is remanufactured extensively into siding, sashes, doors, blinds, millwork, casket stock, and containers.
True
False
17.Albarco is primarily used for general construction and carpentry wood, but it can also be used for furniture components, shipbuilding, flooring, veneer for plywood, and turnery.
True
False
18.Hura is used principally where strength and resistance to wear are required. Uses include ship and dock building, lock gates, wharves, piers, jetties, vats, piling, planking, industrial flooring, bridges, and some specialty items (fishing rods and billiard cue butts).
True
False
19.What does ASTM stand for?
American Standard for Testing and Materials
American Society for Testing and Materials
American Standard for Transportation and Materials
None of the above
20.Peroba is suited for general construction work and is favored for fine furniture and cabinetwork and decorative veneers. Other uses include flooring, interior woodwork, sashes and doors, and turnery.
True
False