Wood

Question 1

tough fibrous cellular substances that makes up most of the stems and branches pf trees beneath the bark

Answer 1

Wood

Question 2

from conifer trees that have needles instead of leaves

Answer 2

Softwood

Question 3

From broad-leaved or deciduous trees

Answer 3

Hardwood

Question 4

the softer, younger outer part of a tree

Answer 4

Sapwood

Question 5

the older, harder central portion of a tree

Answer 5

Heartwood

Question 6

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

Answer 6

Checks

Question 7

cracks bet and parallel to the annual rings

Answer 7

Shakes

Question 8

irregular growths w/ interrupt the smooth curve of the grain

Answer 8

Knot

Question 9

well defined openings bet annual rings containing solid or liquid pitch

Answer 9

Pitchpockets

Question 10

lack of wood on the edge or corner of a piece

Answer 10

Wane

Question 11

caused by the attack of fungi

Answer 11

Decay

Question 12

any variation w/ the plane surface caused by unequal shrinkage of the board

Answer 12

Warping

Question 13

lumber cut tangent to the annual rings

0 - 45 degrees

Answer 13

Plain Sawing

Question 14

wood cut radially to the annual rigns of growth parallel to the rays

45 - 90 degress

Answer 14

Quarter Sawing

Question 15

wood is cut at a 30 - 60 degree angle to the center of the timber

Answer 15

Rift Sawing

Question 16

lumber less than 2” thk and less than 8” wide

Answer 16

Strips

Question 17

wood suitable as a building material

Answer 17

Timber

Question 18

a manufactured timber product

Answer 18

Lumber

Question 19

lumber that is surfaced w/ a planing machine to attain a smooth surface

Answer 19

Dressed Lumber

Question 20

lumber that is saw, trimmed, and edged but not surfaced

Answer 20

Rough Lumber

Question 21

lumber seasoned in a kiln under controlled conditions

Answer 21

Kiln Dried

Question 22

wide pieces of lumber 2” - 5” thk

Answer 22

Planks

Question 23

pieces more than 2” and less than 5” in any dimension

for strength rather than appearance

Answer 23

Dimension Lumber

Question 24

pieces 5” or more on the smallest dimension

Answer 24

Timber

Question 25

pieces less than 2” thk and at least 8” wide

graded for appearance rather than strength

Answer 25

Board Lumber

Question 26

size of lumber when it is cut from the log

Answer 26

Nominal Size

Question 27

lumber is sold in lengths from _ up to _ in increments of _

Answer 27

6’ - 20’

2’

Question 28

makes wood liable to the attack of insects and fungi and unfit for use

Answer 28

Moisture

Question 29

what happens when the moisture content percentages are below the fiber saturation point?

Answer 29

Shrinkage of wood

Question 30

process of removing moisture from green wood

Answer 30

Seasoning

Question 31

drying of the wood continues until the vapor pressure in the air just balances the vapor pressure on the wood surface

Answer 31

Equilibrium Moisture Content