Chapter 13.1
Surfaced when its moisture content was equal or greater than 19%
The term S-DRY implies that the lumber has been:
surfaced on two sides
The term s2s implies that the lumber has been
Two different parts of the same tree.
The terns sapwood and heartwood refer to?
cellulose
The walls of wood cells consist primarily of?
11%
The weight of a piece of lumber is 2 lbs. The weight of the same piece after it is fully fried is 1.8 lbs. What was the original moisture content in the wood?
Utility
Which of the following grades can only be used as blocking?
Construction
Which of the following grades will not apply to a 2x8 lumber?
No.4
Which of the following is NOT a lumber grade?
4x8
Which of the following lumber cross sections is that of a dimension?
Cedar
Which of the following species of wood is naturally decay resistant?
Oak
Which of the following species of wood is not a softwood?
Redwood
Which of the following species of wood is nota hardwood?
Radial-swan
Which of the following terms means the same as quarter-swan?
Lumber and Solid sawn lumber
Which of the following two terms are used synonymously?
in the U.S., Canada, Mexico and several other countries.
Wood certified by the Forest Stewardship Council (FSC) is available
Stronger along the grain than across the grain.
Wood is?
Growth rings.
if we cut a cross section through a tree trunk, we will see a number of rings. The most appropriate term for these rings is?
Approximately the same as in the initial stud length of 10ft.
A 10ft. long stud was installed in position when the woods moisture content became 8%. The new stud length will be ?
False
A lumber grade stamp must include information on the cross-sectional dimensions of lumber.
True
A lumber grade stamp must include the mill identification number.
actual cross-sectional dimensions.
A piece of lumber has been specified as 2 inches x 4inches in cross section. This refers to:
20,000bd ft.
A retailer of building materials purchased 1,000 pieces of 2x12 lumber, each 10ft long. How many board feet did the retailer purchase?
galvanized sheet steel
A termite shield is generally made of
False
Flat-sawn lumber is dimensionally more stable than quarter-sawn lumber.
True
From the user's view point, the difference between MC 15 and KD 15 is gnarly ignored.
greater than or equal to 20%
Fungal decay in wood occurs when the moisture content in wood is?
True
Hardwoods are generally used for fine-quality flooring, furniture, and wall paneling?
vertical direction
In a 2x6 stud, the wood grain is parallel to the:
Fasle
In calculating the board foot measure, we must use the acutal dimensions.
Western and southern regions of the united states.
In the U.S., most structural lumber is grown in the
only visual inspection
Lumber used for structural framing members, such as studs, floor joists and rafters is grades using?
from softwood species
Lumber used for structural framing of buildings in North America is generally derived:
against both fungi and termites
Preservative- treated lumber is effective
California
Redwood is grown mainly in:
True
Spruce is a softwood species
Flat-sawn
Structural lumber is typically?
None of the above
The actual dimensions of 2x12 lumber are:
3 1/2 inches by 7 1/4 inches
The actual dimensions of 4x8 lumber are:
35 pcf.
The approximate density of lumber is?
durability of lumber.
The basis for distinguishing lumber as board, dimension lumber, and timber is the?
Hollow, long tubular cells.
The cellular structure of wood consists mainly of:
Botanical characteristics
The difference between soft woods and hardwoods is based on the?
Dry
The moisture content in a piece of lumber has been measured to 15%. According to the wood industry, this piece of lumber will be classified as?
