Unit 5: Engineered Wood Products
Panel face orientation indicator
A BLANK identifies the strongest direction (axis) of a panel.
Plywood
A widely used structural wood panel is BLANK.
90
Adjacent layers of plywood panel are placed at a(n) BLANK degree angle to another.
Beams, headers, and rafters
Laminated veneer lumber is used for BLANK.
Cross-laminated
Layers placed with grain at right angles.
Mill number
Location where panel was manufactured.
Back
The outside layers of a panel are known as the face veneer and BLANK veneer.
False
The plies of interior panels are bonded together with moisture-resistant or water-proof glue.
True
The print reading abbreviation for board is BD.
Plies
Thin layers of wood that form plywood are known as BLANK.
Peeler log
Used to make veneer
WH
Water Heater
Wood I-joists
Web between top and bottom flanges.
Glulam
Wood laminations bonded with adhesive.
False
Interior panels may be used for exterior sheathing purposes.
Exterior
The APA recommends BLANK panels for continuous weather or moisture exposure.
APA
BLANK Rated Sheathing is used where the highest strength and stiffness are required.
Glulam timbers
BLANK are typically manufactured in lengths up to 20'.
HDO plywood
BLANK concrete forms can be reused 20 to 50 times provided they are properly maintained.
APA Rated Strud-1 FLR
BLANK is a combination subfloor/underlayment panel used under a carpet and pad.
Particle board
BLANK is available in thickness from 1/2" to 1 3/4".
Engineered Lumber
BLANK is manufactured using solid wood members or veneers, wood strands and fibers, or a combination of solid wood members and wood strand members.
Laminated Veneer
BLANK lumber is an engineered lumber product composed of layered veneers and waterproof adhesive.
Finger-jointed
BLANK lumber is an engineered lumber product composed of short pieces of dimension lumber jointed end-to-end.
Core
Center layer
True
Composite panels offer the advantages of structural panels with an appearance-grade finish.
Die Cutters
During manufacture of plywood, BLANK are used to remove small defects.
True
Each layer of plywood consists of one or more plies.
True
Exposure 1 panels are recommended where panels will have short periods of exposure to moisture during construction.
False
Fiberglass-reinforced plastic plywood has glass fiber mats used was the center plies in plywood.
Hardboard
Four grades of BLANK are standard, tempered, service, and service tempered.
False
Hardboard panels are generally 42" wide.
True
Medium density fiberboard is nonstructural reconstituted panel.
Douglas fir
Most structural plywood is manufactured from BLANK.
False
Nonstructural wood panels are used for sheathing only.
Sill plate
OSB rim boards fill the space between a BLANK and the bottom plate of a wall.
True
Oriented strand board panels may be used for sheathing.
5
Oriented strand board panels normally have three to BLANK layers.
Face and back veneer
Outer layers of a panel
Plyform
Panel used for concrete forms.
Oriented Strand Board (OSB)
Panels are less expensive than plywood panels.
Long wood strands
Parallel and oriented strand lumber consist of BLANK oriented along the length of the lumber and bonded together using an adhesive.
False
Parallel strand lumber is made from flaked wood strands that have a high length-to-thickness ratio.
True
Particleboard is commonly used for floor underlayment.
Grades
Plyform panel BLANK include Class I and Class II.
True
Plyform panels have an overlay which provides additional surface protection.
True
Plywood always has an odd number of layers.
Ply
Single veneer sheet
Trademark
Stamped on face and one edge of panel.
Panels
Standard sizes of plywood BLANK are 4' x 8', 4' x 10', and 5' x 12'.
False
Structural plywood panels are manufactured from hardwood.
