Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
62 Cards in this Set
- Front
- Back
|
What is the actual measurement of a nominal 2" ´ 4"? |
1-1/2" (38 mm) ´ 3-1/2" (89 mm) |
|
|
Which one of the following groups of wood species best resists decay? |
redwood, cedar, cypress, and teak |
|
|
Wood is composed of numerous cells |
True |
|
|
What is the construction material most often associated with carpentry? |
wood |
|
|
Which of the following categories would include beams and girders? |
timbers |
|
|
How should lumber be stored at a jobsite? |
covered, but with an air space at the top and bottom for air circulation |
|
|
Wood _________________ in strength as moisture content _________________ |
Increases, Decreases |
|
|
Which of the following is the method of cutting logs into lumber so that the annular rings are almost at right angles to the wide surface? |
quarter-sawing |
|
|
What does a cross-section of branches in a tree trunk create? |
knots |
|
|
The water in the cell cavities is the first to be removed from the wood. What is this water called? |
free water |
|
|
What type of tree does softwood come from? |
cone-bearing trees |
|
|
Where is lumber straightened, smoothed, and uniformly sized? |
at a planer mill |
|
|
In which season is tree growth faster? |
spring |
|
|
What is the very centre of a tree’s cross-section called? |
pith |
|
|
FAS indicates that hardwood is first and second grade |
True |
|
|
At the mill, they water down the logs in order to keep the bees from making thier nests in amongst the logs |
False |
|
|
Which of the following can help prevent checks in lumber? |
sealing the ends of lumber with paint or wax |
|
|
What does green lumber contain large amounts of? |
water |
|
|
How long will the air-seasoning process of lumber likely take? |
six months to two years |
|
|
What is lumber three inches (75 mm) thick called? |
dimension lumber |
|
|
Which of the following hardwood types is most often used for tool handles? |
hickory |
|
|
Which of the following pairs of hardwood species are most often used for floors? |
oak and maple |
|
|
What is lumber called when it is first cut from the log, and contains a large amount of water? |
green lumber |
|
|
At approximately what percent moisture content does wood reach its fibre-saturation point? |
30 percent |
|
|
Which type of wood is both aromatic and moth repelling? |
cedar |
|
|
When we speak of the amount of water in lumber, what do the initials “MC” represent? |
moisture content |
|
|
Lumber should have a moisture content _______________ with the air that will surround it after it is installed |
Equal |
|
|
What is another name for quarter-sawn lumber? |
edge-grain lumber |
|
|
What is the best way to learn the characteristics of different species of wood? |
working with them |
|
|
Which of the following moisture contents is best suited for trim and cabinet woodwork? |
8 to 10 percent |
|
|
An annual ring represents one decade of cellular growth |
False |
|
|
What is the standard thickness of a board? |
under two inches (50 mm) thick |
|
|
What is decay caused by? |
fungi |
|
|
When wood is considered not feasible for reuse, it is readily absorbed back into the earth |
True |
|
|
What is bark on the edge of lumber called? |
wane |
|
|
Which characteristics best describe coniferous trees? |
cone-bearing softwoods |
|
|
What point has lumber reached when it has dried to the moisture content of the surrounding air? |
equilibrium moisture content point |
|
|
What percentage of moisture content must wood have before it will start decaying? |
19 percent |
|
|
What are the distinct rings formed by the growth of a tree called? |
annular rings |
|
|
Which of the following is a consistent characteristic of green lumber? |
it is heavier than dry lumber |
|
|
Which of the following lumber drying processes is most expensive? |
kiln-drying |
|
|
Two boards measuring 2” x 2” x 6’ contain 12 board feet |
False |
|
|
What is the term used to describe a fault in lumber that detracts from its appearance, function, or strength? |
defect |
|
|
Which of the following wood species is most suited for exterior trim and decking? |
redwood |
|
|
Which of the following is known as the process of stacking lumber with cross sticks between the layers to allow air flow between the pieces? |
stickering |
|
|
Which of the following wood species is used for siding? |
cedar |
|
|
What are crooks, bows, cups, and twists? |
warps |
|
|
The portion of the log that does not become lumber is known as residue |
True |
|
|
_________________________ is the growing portion of a tree |
Cambium layer |
|
|
Which part of a log is usually lighter coloured? |
sapwood |
|
|
Wood shrinks more __________________ the grain than _________________ the grain |
Across, Along |
|
|
Which of the following shows hardwood graded from best to worst? |
FAS, select, No. 1 common |
|
|
What is lumber that is surfaced on four sides called? |
S4S lumber |
|
|
What happens to wood as it dries? |
it shrinks |
|
|
Which of the following is a commonly-used and abundant softwood? |
fir |
|
|
Which of the following has the greatest insulating value? |
12 inches (300 mm) of brick |
|
|
If a log is too big for the de-barker chainsaws are used to first trim the log to an acceptable size |
True |
|
|
What is the preferred moisture content of lumber used for framing? |
15 percent |
|
|
With proper care, how long will wood last? |
indefinitely |
|
|
Softwood lumber is generally air-dried |
True |
|
|
Which formula is used to find board feet? |
number of pieces ´ thickness (in inches) ´ width (in inches) ´ length (in feet) ÷ 12 |
|
|
What is the recommended moisture content for exterior finish lumber? |
12 percent |
