Deck 18: Wood

Question 1

____ is a water-based wood preservative that prevents decay from fungi and insects.

A) Bardac-treatment
B) Alkaline Copper Quat
C) Chromated Copper Arsenate
D) Copper Azole

Answer 1

D

Question 2

The design data are presented in the form of ____ for the various species groupings.

A) Grade Properties
B) Base Values
C) Grade Conditions
D) Base Grades

Answer 2

B

Question 3

Describe a fiber saturation point and how it is found.

Answer 3

In a living tree or freshly cut wood (green), moisture is present in the cell fibers as absorbed water and in the cell cavities as free water. As the wood begins to dry, the water in the cell cavities begins to disappear. Once all free water in the cell cavities is gone, the cell fibers making up the cell walls contain any remaining water. This is the fiber saturation point.

Question 4

Where is the heartwood of a tree located and what is its purpose?

Question 5

____, because it bonds fibers together in fiber bundles, gives wood compressive strength.

A) Cellulose
B) Lignin
C) Hemicellulose
D) Glucose

Question 6

Describe rough, blanked, and dressed lumber.

Question 7

Describe how wood can be attacked by fungi.

Question 8

What is Chromated Copper Arsenate and for what purposes is it approved?

Question 9

Name and briefly describe the type of sawing used for lumber in most construction.

Question 10

What are the seven Conditions of Use?

Question 11

Woods are divided into two classes: hardwoods and ____.

A) softwoods
B) mediumwoods
C) evergreens
D) deciduous

Question 12

____ is/are sold by the piece.

A) Molding and trim
B) Wood shingles
C) Metric lumber
D) Posts and pilings

Question 13

What is the modulus of elasticity?

Question 14

Moisture content of lumber air dried for construction purposes should be in the _____ percent range in the United States.

A) 12 to 15
B) 13 to 18
C) 15 to 19
D) 16 to 20

Question 15

What properties of wood does moisture affect?

Question 16

Describe the process and methods of lumber seasoning.

Question 17

____ lumber is dressed to a size larger than standard dressed sizes but smaller than the nominal size.

A) Blanked
B) Worked
C) Re-sawn
D) Ripped

Question 18

At the center of a tree is a small core called the ____.

A) heartwood
B) pith
C) bark
D) annular ring

Question 19

The Southern Pine Inspection Bureau has established fifteen categories of stress-graded lumber ____ in. or less in thickness.

A) 2
B) 3
C) 4
D) 5

Question 20

Wood that maintains a moisture content below ____ percent will be free from decay.

A) 10
B) 20
C) 30
D) 40