Chapter 7 Flashcards
What is the relationship of nominal size to actual dimension in solid lumber
Nominal is larger than actual
At what interval must the brick veneer be tied to the wood frame walls
16 inches (400 mm)
Which of the following can parallel strand lumber be used for
heavily loaded columns
Below what temperature does pyrolysis begin
392 degrees F ( 200 degrees C)
What is the direction of the grain of adjacent veneers in plywood?
At right angles to each other
What is installed on the outside of the studs to provide structural stability and an underlay for the siding
sheathing
Which provides the exterior cladding of a wood fame building
Siding
Which makes use of a short circular piece of steel within and between two adjacent wood members to transfer the load between the members
split ring truss
Which of the following causes of deterioration is unique to wood
Insects
How far apart are the post usually spaced in post and beam framing
4 to 12 feet (1.3 m to 4 m)
Which cannot be used to join laminated members when tensile forces will be transmitted along the length of the beam
Butt joint
Which of the following is not a disadvantage to the use of wood in building construction
wood shrinks uniformly
What determines the extent to which the presence of foam insulation in a wood frame wall will increase fire spread within the wall?
Existence of an air space
What is generally the maximum number of stories of a wood structure
three
What does the construction of a platform frame building begin with
Wood sill being attached to the foundation
On the basis of strength to unit weight, which material is wood’s tensile strength comparable to
Steel
In which area is ignition resistant construction beginning to take place
Urban-wildland interface
What fire resistance rating must be achieved for a wood frame building to be classified as Type V-A
1 hour
What is the minimum size of the columns in heavy timber framing
8 x 8 inches (200 mm x 200 mm)
What is the total amount of thermal energy that could be released if the fuel were completely burned
Heat of combustion
Which is the most common type of wood framing
Light wood framing
Fire within what type of insulation material will progress in a slow smoldering manner
Granulated rock wool
Which type of phenomenon is the combustion of wood
Surface alone
How many different directions is it possible for fire to spread where truss joists are used in floor construction
Four
In balloon frame construction where do the exterior wall studs run
Foundation to the roof
Which of the following is used when energy efficiency is desired
Composite panel
What is the minimum nominal thickness of a timber
5 inches (125 mm)
Which interior finish material is most commonly used when a degree of fire resistance is required
Gypsum board
What is the maximum moisture content of structural lumber
19 percent
What would the fire retardant treated plywood of the 1980 react with under conditions of elevated temperature which resulted in the wood becoming brittle
Moisture in the air
What are the initial products of pyrolysis
Water and carbon dioxide
Which type of connection is most likely to be seen in heavy timber construction
Bolts
What size area are attic spaces usually required to be subdivided into in combustible construction
3,00 square feet (278.7 sq.m)
What happens to the fire retardant wood when it is exposed to heat?
Chars
Which material can be used to make the flanges of an I beam
Solid wood lumber
What is eliminated with post and beam framing?
Combustible voids
What nominal size members are used to make up light frame trusses
2 inch (50 mm)
Which of the following is typically used for short span beams and columns
Laminated strand lumber
When did ballon framing begin to lose favor in the construction industry
1920’s
Which is used in the flooring of manufactured and mobile homes
Waferboard
What are the flat strips of wood used to make laminated wood joined together with?
Glue
How many layers of strand like wood particles are glued together to make oriented strand board
Three to five
What is the main advantage of thermoplastic composite lumber
resistance to weathering
