Wood Basics
Which type of tree is considered a softwood
Pine
A 2 × 4 refers to
Nominal size
Preservative-treated lumber is designed mainly to resist:
Moisture-related decay.
Concrete is primarily made from:
Cement, aggregates, and water
Steel framing members are commonly installed
12", 16" or 24" OC like wooden studs
What layer of a tree is responsible for growth?
Cambium
What is the actual size of a typical 2 × 4?
1½" × 3½
KDAT stands for:
Kiln Dried After Treatment
What process gives concrete its strength?
Hydration
When calculating studs, how many studs are added for a 90° corner?
3 Studs
What is the primary function of bark?
Reduce water loss
Which agency establishes lumber grading standards?
ALSC
What is the standard size of a wood structural panel?
4' × 8'
Concrete that has hardened but not reached full strength is called:
Green concrete
Trim and molding are typically sold by the:
Lineal foot
Which statement about heartwood is true?
It is more durable than sapwood
Which grade generally has the fewest defects?
Select Structural
OSB is made of:
Wood strands bonded with resin
What percentage of concrete volume is usually aggregates?
60% to 80%
To estimate wall sheathing panels from wall length, divide the wall length by:
Divide by 4.
Quarter-sawn lumber is less likely to:
Shrink and warp
What does S4S mean?
Surfaced on four sides
hich engineered product is commonly used for floor beams, roof beams, and headers?
LVL
Efflorescence appears as:
White powdery deposits
Concrete volume is most commonly ordered in:
Cubic yards
n edge-grained lumber, annual rings form an angle
. Greater than 45
A beam measuring 6" × 10" would most likely be classified as:
Beam and Stringer
Which engineered wood product can span long distances and is commonly used as floor joists
Wood I-Joists
Which material uses more water than mortar and is intended as a filler?
What is grout
When estimating rectangular concrete volumes, the final step is to divide by:
divide by 27