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Wood Construction Technology > Lumber > Flashcards

Lumber Flashcards

1
Q

Is that fibrous substance which composes the trunk and branches of the tree that lies between the pith and the bark

A

wood

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2
Q

is the term applied to wood when it’s sad or split into timbers, planks, and boards

A

lumber

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3
Q

lumber is classified by its degree of manufacture

A
  1. rough lumber
  2. surface or dress lumber
  3. work lumber
  4. shop lumber
  5. yard lumber
  6. dimensioned lumber
  7. structural lumber
  8. slab
  9. timber
  10. plank
  11. board
  12. sheet
  13. flitch
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4
Q

is as it comes from the saw it is the term applied to unplanned or undressed lumber

A

rough lumber

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5
Q

has at least one smooth side as it comes from the planer

A

smooth lumber

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6
Q

is mild to the molder to a specified edge

A

worked lumber

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7
Q

is less than 5 inches thickness and includes strips, boards, and framing members

A

yard lumber

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8
Q

is a yard lumber which is 2 inch or 5 inch in thick

A

dimensioned lumber

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9
Q

is similar to yard lumber but is over 5 in in thickness and in width

A

structural lumber

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10
Q

a piece of lumber cut tangent to the annual rings, running the full length of the lag and containing one flat surface

A

slab

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11
Q

a piece of lumber more than 5 inches in its smallest dimension

A

timber

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12
Q

a white piece of lumber ranging from 1 1/2 inches to 5 inches in thickness

A

plank

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13
Q

a piece of lumber less than 1 1/2 inches thick and 4 in or more in width

A

Board

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14
Q

a term applied to a piece of veneer, plywood, or other manufactured board

A

sheet

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15
Q

a thick piece of lumber or log which is to be cut into veneer

A

flitch

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16
Q

classification of food

A
  1. mode of growth
  2. density
  3. leaves
  4. shade or color
  5. grain
  6. nature of the surface when sawed
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17
Q

two types of mode of growth

A
  1. exogenous
  2. endogenous
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18
Q

density of a wood is either

A
  1. soft
  2. hard
19
Q

the leaves of the tree is either

A
  1. needle shape
  2. broad shape
20
Q

shade or color of wood

A
  1. white
  2. yellow
  3. red
  4. brown
  5. black
21
Q

grain of wood

A
  1. straight
  2. cross
  3. fine
  4. coarse
22
Q

nature of the wood when sawed

A
  1. plain
  2. grained
  3. figured or mark
23
Q

methods of sawing log

A
  1. lagging
  2. lumbering
  3. sawing
24
Q

is the process or operation from cutting trees, hauling, and delivering of food to the saw meal for sawing

A

logging

25
Q

is the term applied to the operations performed in preparing the wood for commercial purposes

A

lumbering

26
Q

is the process of cutting logs into commercial sizes of lumber

A

sawing

27
Q

methods and manner of log sawing are:

A
  1. plane or bastard sawing
  2. quarter or rift sawing (radial, tangential, quarter tangential, combined radial and tangential)
28
Q

are irregularities found in wood

A

defects in wood

29
Q

classification of defects in wood

A
  1. natural defects
  2. seasoning defects
  3. due to deterioration
30
Q

types of natural defects

A
  1. heart shake
  2. wind shakes or cup shakes
  3. star shakes
  4. knots
31
Q

this is caused by faultly techniques of seasoning

A

seasoning defects

32
Q

types of seasoning defects

A
  1. warping (cupping, bow, twist)
  2. check
  3. split
  4. wane
  5. crook
33
Q

due to deterioration

A
  1. dry rot
    2.:wet rot
34
Q

is the controlled process of reducing moisture content of the timber or lumber so that it is suitable for the environment and intended use

A

seasoning

35
Q

methods of seasoning lumbers are

A
  1. natural or air seasoning
  2. artificial seasoning
36
Q

is the method used with the timbers or numbers stuck in the open air

A

natural or air seasoning

37
Q

is a process where in lumber is stuck in a drying kilm and then exposed to steam and hot air

A

artificial seasoning

38
Q

artificial seasoning methods employed are:

A
  1. forced air drying
  2. kiln air drying
  3. radio frequency dielectric drying
39
Q

is the process of accelerating seasoning or achieving faster and more uniform pre-drying prior to kiln drying

A

forced air drying

40
Q

it differs from air drying in the sense that the process is speeding by control of the temperature and humidity as well as the circulation of air in a special built room or chamber

A

kiln air drying

41
Q

when the electronic disturbance occur the innermost molecules begin moving

A

radio frequency dielectric drying

42
Q

two processes of preserving wood

A
  1. external
  2. internal
43
Q

is to compel additive synthetics profound into the cell construction of the wood

A

pressure-treated wood

Wood Construction Technology (4 decks)

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