WOOD

Question 1

joists in wood-framed building (5)

Answer 1

• nominal width 2in
• nominal depths 6-14in
• joist may have nominal width of 3-4in for heavy loads
• double joists must be provided under partitions parallel to joists
• spaced at 12in or 16in on center

Question 2

wood split

Answer 2

separation that extends complete through a piece of lumber - would most affect the wood joist’s ability to resist horizontal shear

Question 3

wood I-joists

Answer 3

engineered product to be used in place of traditional wood joists for spans from 16-20ft - typically has OSB web

Question 4

glue-laminated members

Answer 4

Joining of smaller strips of wood together with glue - can be laminated into shapes not found in nature - smaller in size than solid timbers of equal load carrying capacity

Question 5

saddle hangers

Answer 5

pieces of preformed metal that help minimize the space required for wood framing by allowing the joists to be installed with their top edges flush with the top edges of the beams

Question 6

flitch beam

Answer 6

combines wood and steel into one member with load-carrying capacity

Question 7

moisture content

Answer 7

weight of water in wood as a fraction of the wight of oven-dry wood - less moisture content = higher structural quality

Question 8

platform vs balloon framing

Answer 8

platform framing uses separate studs for each floor of the building with the top plates, floor jooists, and floor framing

balloon framing uses continuous wall studs from foundation to second floor ceiling

Question 9

plywood

Answer 9

sheets of thin veneer glued together

Question 10

sheathing

Answer 10

thin panel material attached to framing - lateral support, increase rigidity, and provide base for finishes

Question 11

particleboard

Answer 11

composed of small wood particles, fibers or chips mixed together - preferred for backing and framing of finish carpentry

Question 12

oriented strand board (osb)

Answer 12

engineered panel product manufactured from precision-cut wood - arranged in layers - not expensive, not strong

Question 13

medium-density fiberboard (mdf)

Answer 13

panel product made from wood particles reduced to fibers - most dimensionally stable - smooth, uniform, dense surface

Question 14

firestops

Answer 14

barriers installed in concealed spaces of combustible construction to prevent the spread of fire caused by drafts

Question 15

structural insulated panels (sip)

Answer 15

composite building unit consisting of two oter skins bonded to an inner core of rigid insulation material

Question 16

cross-laminated timer (clt)

Answer 16

wood product manufactured by layering dimension lumber at right angles to form a thick structural panel - odd number of layers- resist axial, bending,a nd racking loads - made into large panels for floors, roofs, walls

Question 17

plain sawing

Answer 17

most efficient use of the log - least expensive - various orientations to the grain of the tree

Question 18

quarter sawing

Answer 18

cutting log into quarters and then sawing perpendicular to a diameter line - more uniformly vertical grain - boards tiwst and cup less, shrink less in width, hold paint better, have fewer defects

Question 19

rift sawing

Answer 19

consistent vertical grain - saw cuts from the quartered log are made radially to the center of tree - more waste = more expensive

Question 20

veneer cuts

Answer 20

rotary (least expensive), plain slicing, quarter slicing, half round, rift

Question 21

cabinet door front construction (4)

Answer 21

flush, flush overlay, reveal overlay, lipped overlay

Question 22

scribe piece

Answer 22

oversized piece of plastic laminate or wood that can be trimmed in the field to follow the irregularities of the wall

Question 23

venner matching (3)

Answer 23

bookmatching, slip matching, random matching

Question 24

panel matching venners

Answer 24

warehause match, sequence match,blueprint match

Question 25

direction wood will shrink most

Answer 25

tangentially

Question 26

parallel strand lumber (psl)

Answer 26

strongest manufactured wood product

Question 27

wood panel is rated as fraction

Answer 27

top number is roof rafter spacing and bottow number is floor joist spacing

Question 28

flat head nails

Answer 28

common nails, sinker nail, box nail, roofing nail

Question 29

types of nailed connections

Answer 29

face nail (strongest- perpendicular to grain), end nail (weakest-parallel to grain), toe nail

Question 30

stressed-skin

Answer 30

3 layers (sheathing, studs, sheathing) - studs take up compression loads, sheathing takes up tension loads

Question 31

ways to fram a corner in stud framing

Answer 31

corner framing, california corner, interior corner, double stud

Question 32

stringers

Answer 32

support stairs

Question 33

Four types of seasoning distortions in dimension lumber

Answer 33

Crook
Bow
Cup
Twist