-
wood is stronger...
in compression rather than tension
-
framing lumber season at...
19% or less
-
fiber saturation point
about 30%
-
board foot
nominal 1"x12" board one foot in length
-
development of fungus
- 1)mild temperatures
- 2)moisture
- 3)air
-
wood
hard fibrous substance lying beneath the bark of trees
-
lumber
wood that has been sawn into construction members
-
timber
lumber than is 5" or larger in its least dimension
-
knot
branch embedded in a tree and cut through in manufacture
-
peck
pitted area sometimes found in cedar and cypress
-
pitch pocket
opening between growth rings containing resin
-
shake
lengthwise grain separation between or through growth rings
-
check
lengthwise grain separation caused by seasoning
-
split
lengthwise separation of wood extending from one face to another
-
wane
lack of wood on the edge or corner
-
warp
shrinkage distortion of a plane surface; includes bow, crook, cup and twist
-
-
-
crossbands
additional sheets located between and placed perpendicular to the core and outside plies
-
hardboard
made from wood fibers than have been highly compressed under heat and pressure into dense, durable boards
-
fiberboard
- manufactured from waste paper, wood pulp, and fibers
- used for acoustical tile, sheathing, and interior wall finishes
- standard size of 4x8, thickness 1/2" to 1"
-
flakeboard
- composed of large wood flakes bonded together with synthetic resins under pressure
- lightweight
- easily damaged
- used for insulating backoup material or as an acoustical material on upper walls and ceilings
-
particleboard
- dry-formed of wood particles bonded together with synthetic resin
- used for core stock for plastic laminate or hardwood veneers and used in the manufacture of furniture, cabinets, countertops, wall paneling, and doors of all types
-
beadboard
- insulating board consisting of a core of small, expanded polystyrene beads with heavy paper laminated to both sides
- use insulating material, such as perimeter insulation on foundation walls
-
plastic laminates
consist of a base of phenolic-resin impregnated kraft paper over which a patterned sheet is applied
-
glue laminated lumber
- glulam
- laminations 1-1/2" (but 3/4" is used for curved radius)
- up to 75" in depth
|
|