WOOD

Question 1

is that fibrous substance which composes the trunk and branches og the tree that lies between the pith

Answer 1

Wood

Question 2

is the term applies to wood when it is sawed or split into timbers, planks, and boards

Answer 2

Lumber

Question 3

unplaned or undressed lumber

Answer 3

Rough Lumber

Question 4

has at least one smooth surface

Answer 4

Surface or Dressed Lumber

Question 5

is milled to the molder to a specified edge

Answer 5

worked lumber

Question 6

intended to be cut up ihto further manufacture

Answer 6

Shop Lumber

Question 7

Less than 5 inches in thickness and including strips, boards, and framing members(studs, joints, and rafters). The grading is based on length.

Answer 7

Yard Lumber

Question 8

2 inches or 5 inhes thick (yard lumber)

Answer 8

Dimensioned Lumber

Question 9

Same to yard lumber but is over 5 inches thickness and width. The grading is based on strength.

Answer 9

Structural Lumber

Question 10

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

Answer 10

Slab

Question 11

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

Answer 11

Timber

Question 12

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

Answer 12

Plank

Question 13

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

Answer 13

Board

Question 14

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

Answer 14

Sheet

Question 15

a thick piece of lumber or log which is to be cut into veneer . It may also refer to the pile of veneer cut from one log.

Answer 15

Flitch

Question 16

Classification of Wood (6)

Answer 16

Mode of Growth
Density
Leaves
Shade or Color
Grain
Nature of the surface when sawed

Question 17

are those outward growin trees that are most preferred for lumbering

Answer 17

Exogenous

Question 18

are those inside growing trees that are not preferred for lumbering because they produce soft center core

Answer 18

Endogenous

Question 19

it is either soft or hard

Answer 19

Density

Question 20

two types of leaves

Answer 20

Needle Shape
Broad Shape

Question 21

Shade or Color (5)

Answer 21

White
Yellow
Red
Brown
Black etc.

Question 22

Types of Grain

Answer 22

Staight
Cross
Fine
Coarse

Question 23

Nature of the surface when sawed

Answer 23

Plained
Grained
Figured
Marked

Question 24

a process or operation from cutting trees, hauling, and delivery of wood to the sawmill for sawing

Answer 24

logging

Question 25

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

Answer 25

lumbering

Question 26

process of cutting logs into commercial sizes of lumber

Answer 26

sawing

Question 27

methods and manner of log sawing are

Answer 27

plain and bastard sawing quarter or rift sawing

Question 28

4 ways of quarter or rift sawing

Answer 28

radial tangential quarter tangential combined radial and tangential

Question 29

irregularities found in wood

Answer 29

defects

Question 30

classification of defects in wood

Answer 30

natural defects seasoning defects due to deterioration

Question 31

are radial cracks originating at the heart of the logs commonly found in old trees

Answer 31

heart shakes

Question 32

is the separation of the rings in a piece of wood that occurs as it dries

Answer 32

wind shakes or cup shakes

Question 33

are composed of several heart shakes which radiates from the center of the log in star-like manner

Answer 33

star shakes

Question 34

occurs at the stsrting point of a limb oŕ branch of the wood

Answer 34

knots

Question 35

4 types of natural defects

Answer 35

heart shakes wind shakes or cup shakes star shakes knots

Question 36

4 classification of knots

Answer 36

pin knota small knots medium knots large knots

Question 37

:caused by faulty techniques of seasoning :different types of permanent distortion of timber and ruptures of tissues separately or together

Answer 37

seasoning defects

Question 38

types of seasoning defects

Answer 38

warping check split wane crook

Question 39

Types of warping

Answer 39

cupping bow twist

Question 40

the distortion in convented timber caused departure from its original plane usually during seasoning period

Answer 40

warping

Question 41

:when the board bends edge to edge cross the face pf the boards will look like the letter U :common in boards that are cut close to the pith

Answer 41

cupping

Question 42

a board that bends along the grain lines

Answer 42

bow

Question 43

a board that bends in any variety of direction and cannot maintain a straight line

Answer 43

twist

Question 44

used to describe a crack that runs through a board, usually running lengthwise

Answer 44

check

Question 45

crack extends from face to face of the wood

Answer 45

split

Question 46

the presence of bark or the absence of wood on thr corners of a board

Answer 46

wane

Question 47

board that is bent end to end in the direction of the tall ends of a board as it continues down the length of the board

Answer 47

crook

Question 48

2 types of defects due to deterioration

Answer 48

dry rot wet rot

Question 49

caused by a fungi in a seasoned lumber due to the presence of moisture

Answer 49

dry rot

Question 50

takes place sometime in the growth of the tree caused by water saturation

Answer 50

wet rot

Question 51

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

Answer 51

seasoning

Question 52

2 methods of seasoning lumbers

Answer 52

natural or air seasoning artificial seasoning

Question 53

:is the method used with the timbers or lumbers stacked in the open air :considered as one of the best method seasoning timbers and lumbers, although the period involved is relatively longer

Answer 53

natural or air seasoning

Question 54

:is a process wherein the lumber is stacked in a drying kiln and then exposed to steam and hot air :wood from this process undergoes quizck drying and is classified as quite inferior in quality as compared to those lumber seasoned by air seasoning method

Answer 54

artificial seasoning

Question 55

3 artificial seasoning

Answer 55

forced air drying kiln air drying radio frequency dielectric drying

Question 56

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

Answer 56

forced air drying

Question 57

this process begins with forced air drying or fan drying. it differs from the air dryin in the sense that the process is speededby control of the temperature and humidity, as well as the circulation of air, in a special built of room and chamber

Answer 57

kiln air drying

Question 58

when the electronic disturbance occurs, the innermost molecules begin moving

Answer 58

radio frequency dielectric drying

Question 59

4 common causes of decay in wood are

Answer 59

alternate moisture and dryness fungi and molds insects and worms heat and confined air

Question 60

2 process of preserving wood are as follows

Answer 60

external internal

Question 61

the wood is coated with preservative(as paint) which penetrayes the fiber

Answer 61

external preserving

Question 62

a chemical is integrated as pressure to permeate the wood thoroughly

Answer 62

internal preserving

Question 63

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

Answer 63

pressure-treated wood