Amber Book Wood Flashcards
What does a split ring connector connect and how does it work?
connects timbers, bolt is distributed over a larger area bc the ring is between the timbers
What are timber rivets?
small but numerous bolts to make one large connection?
What is a stressed skin panel?
a strong panel with sheathing on both sides
What is a mortise and tenon?
slot joints for timber connection
What span of cavities requires a firestop?
greater than 10 feet. In balloon framing
Where is a double top plate?
above the cripple studs
What are the uses for wood blocking?
short pieces of lumber that fills between studs, act as firestops, spacing between studs, stiffens, reinforces and helps to support loads
Where is a lookout located?
the overhangin gpart of the roof perpendicular to the trusses
Where is a rimboard located?
it sits on top of header of the floor below or foundation and seals the open ends of the joists.
Where is an ice guard located?
under the shingles to prevent damage to the structure.
What are the two options to insulate a crawlspace?
- ventilate crawlspace and insulate under the floor. 2. Insulate walls and not floors and dont ventilate airspace.
What is the minimum vent area?
1/150 of the attic footprint. OR if vapor barrier, 1/300 of area
Which woods are rot resistant?
redwood, chestnut, cedar, cypress
What is the difference between summer and spring wood?
summer grows slower but stronger. spring grows faster but weaker
What are the applications of hardwood?
floors, furniture, trims
What are the applications of softwood?
structural lumber
Name the hardwoods.
hickory, maple, birch, beech, oak, ash, cherry, walnut, butternut, aspen, basswood, balsa
Name the softwoods.
spruce, pine, larch, cedar, hemlock, redwood, fir
What does S-Dry mean?
19% moisture content
What is the difference between plainsawn and quarter sawn lumber?
plainsawn is parallel to grain and all the wood is used. quartersawn is more dimensionally stable and more expensive
What is a percentage of moisture for wood exposed to the outside? inside?
12% and 8%
What is the order of shrinkage direction largest to smallest? longitudinal, radial, tangential
- tangential, 2. radial, 3. longitudinal
What are 3 types of wood grade?
no. 1, utility light framing, stud grade
What are 3 types of wood veneer in order of best to least quality?
quarter sliced, plain sliced, rotary sliced
What type of manufactured wood is best for decking and railing?
wood plastic composite
What type of manufactured wood is best for overlapping dimensions adhered?
glulam
What type of manufactured wood is best for large panels, floor, roof and walls?
cross laminated timber
What type of manufactured wood is made from osb?
wood i-joists
What type of manufactured wood is the strongest?
parallel strand board
What type of manufactured wood is least strong and least expensive?
LSL and OSL
What type of manufactured wood is more flexible than solid wood (needs close supports)?
wood plastic composite
What is the nominal dimension for 5/4”, 2”, 5”, 6”, 8”?
1”, 1.5”, 4.5”, 5.5”, 7.25”
Which is the strongest and stiffest wood board?
OSB
Which has the smallest grains of wood board?
fiberboard
Which wood boards are best for interior?
particle and fiberboard
Which wood board is best for subfloors and exterior?
OSB
Which wood board is the smoothest?
fiberboard
What does a span rating of 32/16 mean?
roof/floor spacing. 32” OC for roof, 16” for floor
Which rated plywood is better for weathering, exposure 1 or exterior?
exterior is better than exposure 1. 95% of plywood is exposure 1
Which tree types are termite resistant?
eastern red cedar and redwood
Which tree types are decay resistant?
black locust, red mulberry, osage orange, pacific yew
What is the code for treated wood joists?
cannot be less than 18” above grade
What is the code for treated wood beams or girders?
cannot be less than 12” above grade
What is the code for treated wood framing or sheathing
cannot be leses than 8” from soil
What is the code for plates, sill or sleepers?
if in direct contact with masonry or concrete, it must be indirect contact w/ earth
What are 3 types of nail weather coatings?
bright(no weather coating), hot galvanized nails, hot dipped galvanized nails (high weather resistance)
What is the minimum clearance between finish grade and wood construction?
6”
What 4 things determine the strength of a post and beam connection?
- species and grade of lumber
- thickness of wood members
- angle of the resisting force relative to the grain of the wood
- the size and number of bolts/timber connectors used
What type of wood is normally used for shingles and shakes?
red cedar
What type of wood treatment is best for painted below ground applications with steel fasteners?
carbon based PTI and micronized copper
What wood treatment is most toxic?
creosote and chromated copper arsenate
What wood treatment is limited to above ground applications
disodium octoborate tetrahydrate (DOT) and sodium borate (SBX)
What wood treatment is most corrosive to some metal fastners?
copper based - CCA, ACQ and CBA
What wood treatment cannot be painted?
oil based - creosote, pentacholorophenol
What wood treatment is used for telephone poles?
pentochlorophenol
