Unit 5-softwood and hardwood-carp 3
End-use
Three main softwood ___ categories are framing lumber, appearance lumber, and industrial lumber
5
Timber's are no smaller than 5" wide by __" thick
False
Yellow poplar is a softwood
Oak
____ and poplar are the most commonly used hardwood species
Timbers
____ classification of lumber is used for beams, stringers, posts and timbers
Redwood
____ is not a hardwood
Softwood
____ lumber is used for rough construction
Industrial
____ lumber products are used and graded for structural, non structural and remanufacturing purposes
Grade
____ marks are stamped in lumber to provide grading information
Appearance
_____ is the primary factor in determining most grades of hardwood lumber
True
Approximately 25% of total lumber production is hardwood
Knots
C select lumber contains small, tight ___
True
Douglas fir is mostly used for rough construction in the western part of the United States
True
FAS indicates that hardwood is first and second grade
True
Factory and shop grades are used in the manufacture of molding, shutters, windows, doors, furniture, cabinets and case goods
True
Framing lumber is primarily used for structural load bearing applications and is graded for strength
False
General purpose appearance grades include select, finish, and special western red cedar pattern grade groups
True
High quality furniture and kitchen cabinets are often constructed from hardwood
True
Lumber is referred to by the same name as the tree it is produced from
4
Lumber with a ___ common grade is the most commonly used grade for bracing members of concrete forms, economical fencing and crating
True
Lumber with an E grade is typically used for ripping and cross cutting to obtain smaller pieces of prime or better quality lumber
Prime
Lumber with the ____ grade includes a few minor defects or surface blemishes
True
Lumber with the superior grade is clear of most defects and imperfections
Eastern
Most hardwood trees suitable for lumber are grown in the ___ part of the United states
75
Over ___% of the wood used for construction applications is softwood
False
Select merchantable grade lumber is used for spaced sheathing, let-in bracing, fences, boxes and industrial applications
Hardwood
Softwood and ____ are the two main classes of trees
False
Softwood is normally more expensive than hardwood
True
Southern pine is the predominant rough construction wood used in the southeastern part of the United States
False
Structural light framing lumber applications include load bearing members
False
Studs are 2" x 4" or 2" x 6" pieces of lumber 12' or shorter
General purposes
The ____ appearance category includes the common boards, alternate boards and special western red cedar pattern grade groups
NHLA
The ____ is the main industry wide organization that developed and maintains the grades and applications for hardwood lumber in the United States and Canada
Grade
The ____ of lumber is based on strength, stiffness and appearance
False
The highest grades of appearance lumber are stamped with a grade mark
False
The national hardwood lumber association establishes the principle trade classifications and lumber sizes for yard, structural and factory and shop use
B and BTR
The select grade group includes the following grades ____
True
The special western red cedar pattern grade group is associated only with the highest cedar grades
