Name: 
 

Chapter 3



True/False
Indicate whether the statement is true or false.
 

 1. 

Tree growth takes place in the cambium layer.
 

 2. 

Green lumber should be used in construction.
 

 3. 

The nominal size and the actual size of surfaced lumber are not the same.
 

 4. 

Engineered lumber products consume less wood and can be made from smaller trees than traditional lumber.
 

 5. 

Glue-laminated lumber cannot be used for structural purposes.
 

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 6. 

As the tree grows outward from the pith (center), the inner cells become inactive and turn into ____.
a.
sapwood
c.
softwood
b.
heartwood
d.
redwood
 

 7. 

Hardwood comes from ____ trees that shed their leaves each year.
a.
coniferous
c.
perennial
b.
evergreen
d.
deciduous
 

 8. 

____ is the process of restacking lumber on small cross-sticks that allow air to circulate between the pieces.
a.
Aerating
c.
Layering
b.
Sticking
d.
Piling
 

 9. 

The long, narrow surface of a piece of lumber is called its ____.
a.
side
c.
edge
b.
end
d.
width
 

 10. 

A method of cutting lumber, called ____-sawing, produces pieces in which the annular rings are at or almost at right angles to the wide surface.
a.
quarter
c.
slash
b.
plain
d.
rift
 

 11. 

With computers and laser-guided equipment, the ____ determines how to cut the log with as little waste as possible in the shortest amount of time to get the desired amount and kinds of lumber.
a.
cartwright
c.
logger
b.
lumberjack
d.
sawyer
 

 12. 

Lumber, when first cut from the log, is called green lumber and is very heavy because most of its weight is ____.
a.
lignin
c.
cellulose
b.
water
d.
heartwood
 

 13. 

A ____ is bark on the edge of lumber or the surface from which the bark has fallen.
a.
warp
c.
pitch pocket
b.
knot
d.
wane
 

 14. 

The Western Wood Products Association (WWPA) and the Northeast Lumber Manufacturers Association (NELMA) grade lumber in three categories: boards (under 2 inches thick), ____ (2 to 4 inches thick), and timbers (5 inches and thicker).
a.
character
c.
dimension
b.
select
d.
clear
 

 15. 

A board foot is a measure of the ____ of lumber.
a.
surface area
c.
thickness
b.
volume
d.
length
 

 16. 

Most plywood panels are made up of sheets of veneer (thin pieces) called ____.
a.
coatings
c.
corrugations
b.
laminates
d.
plies
 

 17. 

____ letters are found in the grade stamp of veneered panels.
a.
Two
c.
Four
b.
Three
d.
Five
 

 18. 

The ____ rating in the grade stamp on APA-rated sheathing appears as two numbers separated by a slash, such as 32/16 or 48/24.
a.
performance
c.
exposure durability
b.
span
d.
strength
 

 19. 

____ is a reconstituted wood panel made of wood flakes, chips, sawdust, and planer shavings.
a.
Hardwood plywood
c.
Particle board
b.
Hardboard
d.
Softboard
 

 20. 

Traditional lumber processes typically convert ____ percent of a log to structural solid lumber.
a.
40
c.
75
b.
60
d.
90
 

 21. 

____ veneer lumber is intended for use as high-strength, load-carrying beams to support the weight of construction over window and door openings, and in floor and roof systems of residential and light commercial wood frame construction.
a.
Hardwood
c.
Oriental
b.
Laminated
d.
Fibrous
 

 22. 

____ strand lumber has been engineered to replace large dimension lumber (beams, planks, and posts).
a.
Transverse
c.
Parallel
b.
Lateral
d.
Cross
 

 23. 

Laminated strand lumber (LSL) is commonly known by its brand name ____.
a.
Parallam
c.
FlexLam
b.
Glulam
d.
TimberStrand
 

 24. 

The flanges of a wood I-beam may be made of laminated veneer lumber or specially selected ____-jointed solid wood lumber.
a.
double
c.
reciprocally
b.
finger
d.
toe
 

 25. 

____ lumber is constructed of solid lumber glued together, side against side, to make beams and joists of large dimensions that are stronger than natural wood of the same size.
a.
Glue-laminated
c.
Tempered
b.
Pressure treated
d.
Compacted
 



 
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