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Materials IN 2121 - Midterm > Wood > Flashcards

Wood Flashcards

1
Q

Fibrous substance which composes the trunk and branches of a tree that lies between the pitch and the bark. The lignified water conduction, strengthening, and storage tissues of branches, stem, and roots of trees. Known as Xylem.

A

Wood

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2
Q

Examples of wood that are of strong materials

A

oak, kamagong, dau

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3
Q

Examples of wood that are durable

A

teak, mahogany, oak

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4
Q

Examples of wood that are light

A

pine, balsa

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5
Q

Used as shuttering material to form the mold into which concrete is poured during reinforced concrete construction

A

Wood

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6
Q

approximate year indicators when Oak was most used in furniture

A

1600-1750

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7
Q

approximate year indicators when Mahogany was most used in furniture

A

1675-1730

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8
Q

approximate year indicators when Satinwood was most used in furniture

A

1835-present

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9
Q

approximate year indicators when Rosewood was most used in furniture

A

1780-1800

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10
Q

Comes from conifers (evergreen) which have needles instead of leaves

A

Softwood

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11
Q

Come from broad-leafed or deciduous trees/ Most Philippine timber are of this kind.

A

Hardwood

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12
Q

softer, younger , outer portion of a tree that lies between the cambium and the heartwood. Permeable, less durable, and lighter in color.

A

Sap wood

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13
Q

older, harder, central portion of a tree. Usually contains deposits of various materials that frequently gives its darker color than sap. Its denser, less permeable, and more durable.

A

Heart wood

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14
Q

Present in a growing tree like grain irregularity, shakes, and knots. Some are present when the wood is produced and others develop or become more severe as the wood ages.

A

Natural Defects

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15
Q

Caused by careless handling, incorrect conversion, and seasoning techniques/inadequate protection of timber.

A

Artificial Defects

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16
Q

Cause by the attack of fungi

A

Decay

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17
Q

cracks or lengthwise separation across the annual rings of growth caused by irregular shrinkage during drying

A

Checks

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18
Q

Cracks between and parallel to the annual rings of growth

A

Shakes

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19
Q

Irregular growths in the body of a tree which interrupt the smooth curve of the grain.

A

Knots

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20
Q

these are well defined openings between annual rings containing solid or liquid pitch.

A

Pitchpocket

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21
Q

the lack of wood on the edge or corner of a piece.

A

Wane

22
Q

variations with the plane surface of the piece caused by unusual shrinkage of the board.

A

Warping

23
Q

a bend where the long edge curves inward or outward.

A

Crook

24
Q

where the curves inward or outward along its length.

A

bow

25
Q

curves inward or outward along its width.

A

Cup

26
Q

refers to the lumber cut tangent to the rings at an angle of 0 to 45 degrees

A

Plain Sawn

27
Q

radial wood cut to the rings with an angle of 45 to 90 degrees angle.

A

Quarter Sawn

28
Q

refers to the woodcut at a 30 to 60 degrees angle to the center of the timber.

A

Rift sawn

29
Q

processed wood for furniture making, home construction, and the like. Manufactured by re-sawing, passing through a planing machine.

A

Lumber

30
Q

refers to unprocessed wood such as un-harvested trees still with their bark. Suitable for building material.

A

Timber

31
Q

that is sawn, edged, and trimmed but not surfaced. Cut out of logs into different shapes and sizes.

A

Rough Lumber

32
Q

surfaced with planing machine to attain smooth surface and uniform size.

A

Dressed Lumber

33
Q

means “surfaced two sides” dressed lumber smooth on two sides.

A

s2s

34
Q

surfaced on four sides

A

s4s

35
Q

the process of removing the moisture content from green wood so as to make it useful for construction and other uses

A

Seasoning

36
Q

defined as the weight of the water in damp material

A

Moisture content

37
Q

considered as one of the best methods adopted in seasoning of lumber although the period involved is relatively longer than the artificial seasoning.

A

Natural or air drying

38
Q

when the lumber is stacked inside the drying kiln and then subjected to steam to hot air under pressure.

A

artificial seasoning

39
Q

the lumber is dried in a specifically-built room or chamber wherein temperature and humidity as well as the circulation of hot air is controlled.

A

kiln drying

40
Q

used to forestall attack of decay, fungi, harmful insects, and marine borers.

A

wood preservatives

41
Q

creosote, pentachlorophenol, copper naphthenate, oxine copper and IPBC

A

oil-type wood preservatives

42
Q

providing protection against wood decaying fungi, blue stain, insects, and humidity. it penetrates deep into wood without building a barrier.

A

Water borne wood preservative

43
Q

a unit of volume for timber equal to 144 cubic inches, notionally twelve inches by twelve inches by on inch. Where the formula is thickness x W x L

A

Board foot

44
Q

it is unknown in the language of lumber in terms of length

A

Odd numbers

45
Q

a piece of wood for resawing into smaller pieces.

A

Flitch

46
Q

Countries national symbols; its sturdiness is likened to the Filipinos’ unwavering spirit. Makes a durable base for furniture pieces, and etc.

A

Narra

47
Q

hardest types of wood known as “iron wood” also known for its dark color.

A

Kamagong

48
Q

tree used for construction purposes like flooring and paneling. “Withstand the effects of weathering and insects”

A

Philippine teak

49
Q

the practice of using any component removed from a building that is scheduled for or is undergoing demolition or renovation for the purpose of reinstallation in or on building.

A

Architectural salvage

50
Q

the process of converting waste materials into new materials and objects. To treat or process so as to make suitable for reuse.

A

recycling

51
Q

copy of another work of art. it could be a copy of painting, drawing, or of an original piece. there is no creative process involved.

A

Reproduction

Materials IN 2121 - Midterm (5 decks)

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