DIV 06 - Woods and Plastics

Tanguile

- moderately hard reddish wood, tanguile is one of the seven local woods often referred to as Philippine Mahogany. This abundant wood type boasts of fine ribbon or straight grain. It's relatively soft and easy to work on, but resilient enough for outdoor construction.\\ Ideal for: interior finishes, cabinets, boat building

Types of Wood Mouldings

1. Crown 2. Bed 3. Cove 4. Quarter-round 5. Half-round 6. Nose and cove 7. Stop 8. Astragal 9. Screen molding 10. Panel strip 11. Picture moulding

1. Oil-type wood preservatives 2. Water-borne wood preservatives

2 General Groups of Wood Preservatives

1. Covering the wood with a compound or material 2. Impregnating the wood with a chemical

2 methods of treating wood to increase its Fire-resistance

Fibercement boards

72% Portland Cement 20% mineralized cellulose fibers derived from recycled materials, and 8% calcium carbonate.

Plastics

A product of synthetic origin which is capable of being shaped at some stage of its manufacture It is made from a number of common substances such as coal, salt, natural gas, cotton, wood and water, from which relatively simple chemicals known as monomers are built up into chain-like molecules of high molecular weight called polymers. VERSATILE

¾ x 9½

Actual size of 1 x 10 board lumber

¾ x 11½

Actual size of 1 x 12 board lumber

¾ x 3½

Actual size of 1 x 4 board lumber

¾ x 5½

Actual size of 1 x 6 board lumber

¾ x 7½

Actual size of 1 x 8 board lumber

1½ x 8½

Actual size of 2 x 10 dimension lumber

1½ x 11½

Actual size of 2 x 12 dimension lumber

1½ x 3½

Actual size of 2 x 4 dimension lumber

1½ x 5½

Actual size of 2 x 6 dimension lumber

1½ x 7½

Actual size of 2 x 8 dimension lumber

Chromated Copper Arsenate (CCA) Ammoniacal Copper Arsenate (ACA)

Are dissolved in water for pressure treating, producing a product that is clean and odorless. Both preservatives bond with the wood after pressure treating in a chemical process known as fixation, producing treated wood that is highly leach-resistant and safe to use in applications with regular human contact . Provides good protection against decay and insects; can painted on; has no objectionable odor. Wood can be used in contact with the ground but generally recommended for contact with water.

1. Plain 2. Textured 3. Perforated

Available Surface Finish of Hardboard

1. Normal density (soft & flaky) 2. High-density (for worktops & fire doors) 3. Medium density

Available densities of chipboard

1. Celotex 2. Canex 3. Homasote 4. Philtex 5. Bonotex

Brand names of Fiberboards

1. Boral 2. Elephant

Brand names of Gypsum boards

1. Softwoods 2. Hardwoods

CLASSIFICATION OF TREES:

Hardwoods

CLASSIFICATION OF TREES: Generally broad DECIDUOUS trees; used to describe wood from angiosperm trees; eg: Ash, beach, maple, cherry, etc.

Softwoods

CLASSIFICATION OF TREES: Generally needle leaved CONIFEROUS trees that bear their seeds in cones; eg: Pine, birch, cypress.

Annual Ring

CONCENTRIC LAYER of wood produced during a single year's growth of a temperate tree, also called GROWTH RING.

1. Monobasic ammonium phosphate 2. Dibasic ammonium phosphate 3. Ammonium sulfate 4. Borax, boric acid 5. zinc chloride

Chemicals commonly used for impregnation of wood for fire resistance

3' x 6' (900mm x 1800mm) 4' x 8' (1220mm x 2440mm) *most*

Common dimensions of plywood

Millwork

Consists of finished lumber which is further cut and processed at a lumber mill. Includes doors, windows, mouldings, trim and other ornamental forms of wood.

4'x8' (1220mm x 2440mm)

Dimension of Fiberboards

Green Wood

FRESHLY CUT wood from logs.

Degrade

Loss in quality during seasoning of lumber through unequal shrinkage which causes checks and loosening of knots, warping.

6' to 20'

Lumber is sold in lengths from _____________ in increments of 2'

20%

Molds, stains and decay in wood are caused by fungi. Their growth depends on mild temperatures and dampness. Usually wood maintained at ________ M.C. or less is safe from fungus damage.

1. Coal-tar creosotes 2. Creosotes derived from wood, oil, and water gas 3. Creosotes solutions 4. Pentachlorophenol

Oil-type Wood Preservatives

Masonite

Other term for hardboard Cannot be used outside because it absorbs water. has a smooth surface on one side and a screened surface on the other

1. Lucite 2. Plexiglass

Popular brands of Acrylic

1. Wolmanized lumber and plywood 2. Tanalized lumber and plywood 3. Permanized lumber and plywood 4. Boliden lumber and plywood

Pressure Treated Lumber and Plywood

1. Hardness 2. Flexibility 3. Strength 4. Durability

Properties of Wood

Core

Refers to the center plies of plywood

Face and back

Refers to the outside plies of plywood

Thermosetting plastics

Sometimes called thermocuring plastics, set into shape permanently when heat and pressure are applied during the forming stage; 3-dimensional molecular structure

2' x 4' (600mm x 1220mm) 4' x 4' (1220mm x 1220mm) 4' x 8' (1220mm x 2440mm)

Standard Dimension of Fiberboards

4' x 8' (1220mm x 2440mm)

Standard Dimension of Hardboard

1/4" (6mm) to 1" (25mm)

Standard Thickness of Fiberboards

1/8" (3mm) 3/16" (4.5mm) 1/4" (6mm)

Standard Thickness of Hardboard

3/16" (4.5mm) - double-wall partitions ¼" (6.0mm) - double-wall partitions 3/8" (10.0mm) - drawers and shelves ½" (12.0mm) - drawers and shelves ¾" (19.0mm) - drawers, shelves, cabinet and closet doors 1" (25.0mm) - cabinet and closet doors, and sub-floors

Standard thicknesses of plywood

S2S

Surfaced 2 sides

S4S

Surfaced 4 sides

Wood

The hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem.

Nominal size

The size of lumber when it is cut from the log. After cutting, the lumber is dried and then planed on all four sides to achieve smoothness. The finished size (actual) is therefore smaller.

Lumber

The timber product manufactured, used for construction.

½ " to 2" (12 to 50mm)

Thicknesses of Acoustic Fiberboards may vary from: _____________________ in ½" (12mm) increments

3/16" (4.5mm) ¼" (6mm) ½" (12mm) ¾ " (19 mm)

Thicknesses of MDF

Gypsum boards

This is a non-combustible building board with a gypsum core enclosed in tough, smooth paper. It is designed to be used without addition of plaster for walls, ceilings or partitions. It is extensively used in "dry-wall" construction, where plaster is eliminated

Yakal

This resinous wood with yellow to golden-red tones is another local mahogany type. A high-grade timber, can tolerate harsh hot and cold weathers. Ideal for: furniture, surface finishes, small weapons, and outdoor constructions

Narra

This very popular tropical wood has tones that range from yellow to red. The grain (texture and alignment of wood fiber) is often interlocked and wavy, which creates interesting flame and ribbon figures when quartersawn or flat sawn, which makes it a beautiful finishing material. Texture can be anywhere from average-fine to average-coarse. The wood itself is lustrous and has an attractive odor. Classified as endangered and vulnerable here, and in Malaysia. Ideal for: furnishings, floor planks, wall panels

1. Wall board 2. Backing board 3. Core board 4. Type X Gypsum board 5. Water-resistant backing gypsum board 6. Gypsum sheathing 7. Gypsum formboard

Types of Gypsum Board

1. Square edge 2. Tapered edge

Types of Gypsum Board Edges

Square Edge (S.E.)

Types of gypsum board edge used for coverstrip jointing; visible butt - jointed panelling with clamp fixing and free suspension.

Tapered Edge (T.E.)

Types of gypsum board edge used for smooth seamless jointing; jointless wall and ceiling panelling

1. Chromated Zinc Chloride (CZC) 2. Chromated Copper Arsenate (CCA) 3. Ammoniacal Copper Arsenate (ACA)

Water-borne wood preservatives

Timber

Wood suitable for use as a building material

1. Lawanit (standard & tempered) 2. Lawanex (panel) 3. Masonite (all types)

[Brand Names of Hardboard]

Hardwoods

[CLASSIFICATION OF TREES] PROPERTIES: Density: high Weight: heavier Conversion: difficult Strength: along & across the grains Cost: High Water resistant: nearly impervious - Good for framing system - Good for interior finishes & for furniture - Resist fire better

Softwoods

[CLASSIFICATION OF TREES] PROPERTIES: Density: low Weight: lighter Conversion: easy Strength: along the grains Cost: Low Water resistant: No - Good for acoustic & thermal insulation - Good for interior finishes & for furniture - Flexible & Strong

1. Thermoplastics 2. Thermosetting plastics

[Classes: Synthetic Resin]

Thermoplastics

[Classes: Synthetic Resin] Soften when heated and harden when cooled regardless of the number of times the process is repeated.

1. Strips 2. Board lumber 3. Dimension lumber 4. Timbers

[Classifications of Lumber]

Dimension lumber

[Classifications of Lumber] Thick: 2"-5" Wide: any dimension

Timbers

[Classifications of Lumber] Thick: 5" or more Wide: any dimension

Board lumber

[Classifications of Lumber] Thick: less then 2" Wide: 8" or more

Strips

[Classifications of Lumber] Thick: less then 2" Wide: less than 8"

1. Decay (n) 2. Checks (n) 3. Shakes (n) 4. Knots (n) 5. Machine burn (c) 6. Wane (c) 7. Warping (s)

[Common Defects of Wood] DUE TO: (n) - natural (c) - conversion (s) - seasoning

Warping

[Common Defects of Wood] Any variation with the plane surface of the piece caused by unequal shrinkage of the board.

Checks

[Common Defects of Wood] Cracks or lengthwise separation across the annual rings of growth caused by irregular shrinkage during drying.

Decay

[Common Defects of Wood] Defect of wood caused by the attack of fungi

1. Crook 2. Bow 3. Cup 4. Twist

[Common Defects of Wood] Forms of Warping

Wet Rot

[Common Defects of Wood] Reduces the timber due to alternate wet and dry conditions

Dry Rot

[Common Defects of Wood] Rotted wood; usually the result of alternate soaking and drying over a long period of time

Shakes

[Common Defects of Wood] These are cracks between and parallel to the annual rings of the growth

Knots

[Common Defects of Wood] These are irregular growths in the body of a tree which interrupt the smooth curve of the grain.

Wane

[Common Defects of Wood] This is the lack of wood on the edge or corner of a piece.

Machine Burn

[Common Defects of Wood] a DARKENING of the wood due to overheating.

Pitchpockets

[Common Defects of Wood] well-defined OPENINGS between annual rings.

Bow

[Defects of Wood: Warping] a distortion of the board in which the face is convex or concave longitudinal.

Twist

[Defects of Wood: Warping] a distortion of the board in which one corner is raised.

Crook

[Defects of Wood: Warping] a distortion of the board in which the edge is convex or concave longitudinal.

Cup

[Defects of Wood: Warping] a distortion of the board in which the face is convex or concave across the board.

1. Narra bookmatch 2. Kalantas Rotary cut 3. Tanguile Ribbon-grain 4. Lauan Rotary cut 5. Dao bookmatch 6. Rosewood 7. Tanguile

[Examples of Fancy Plywood]

1. Subterranean Termites 2. Non-Subterranean Termites 3. Carpenter Ants & Powder-Pest Beetles

[Insects that Attack Wood]

1. Acrylic 2. Cellulosics 3. Polyethylene (PE) 4. Polystyrene 5. Polyvinyl Chloride (PVC) 6. Polycarbonates 7. Polypropylene 8. Nylons 9. Fluoroplastics 10. Acrylonitrile butadiene styrene (ABS)

[Kinds of Thermoplastics]

Polyvinyl Chloride (PVC)

[Kinds of Thermoplastics] A largely amorphous, rigid, tough, solvent-resistant, flame-resistant thermoplastic. Use: for resilient floor tile, films, pipes, and for paint lacquers, adhesives and safety glass.

Fluoroplastics

[Kinds of Thermoplastics] Class of paraffinic polymers that have some or all of the hydrogen replaced by fluorine. Characterized by excellent chemical resistance, excellent heat resistance, good electrical properties, and excellent wear resistance; resist abrasion.

Polyethylene (PE)

[Kinds of Thermoplastics] Flexible, tough and slightly resilient thermoplastic used in construction as pond or lagoon lining, and water-vapor barriers and dampproofing. Also used for flexible piping - HDPE - LDPE

Polystyrene

[Kinds of Thermoplastics] In spite of its sensitivity to solvent action, its is one of most important thermoplastics because of its excellent transparency and rigidity and its easy moldability. Use: found in colorful, but brittle wall tiles. It is one of several plastics used in lighting fixture diffusers. In foam form, it has become an important thermal insulator. Also found in paint for concrete.

Nylons

[Kinds of Thermoplastics] It is desired for the following properties: exceptionally strong, elastic, abrasion resistant, easy to wash, resistant to damage from oil and many chemicals, can be precolored or dyed in wide range of colors, and resilient .

Acrylic (Thermoplastic)

[Kinds of Thermoplastics] Material combines the transparency of glass (but not scratch-proof quality) with plastics' shatterproof quality. Use: skylights, skydomes, safety glass, paints, adhesives, finish hardware, & lighting fixtures

Cellulosics

[Kinds of Thermoplastics] Primarily cellulose acetate or butyrate Use: principally for paints and lacquers, and transparent sheeting.

Acrylonitrile butadiene styrene (ABS)

[Kinds of Thermoplastics] Styrenic resin with improved toughness and heat resistance. -exhibits high gloss, low shrinkage, and good dimensional stability, is widely used in injection molding of appliances, furniture, and automotive parts. . Use: include panels for large appliances and thermoformed items such as hot tubs and recreational vehicle parts .

Polypropylene (PP)

[Kinds of Thermoplastics] Tough plastic with good resistance to heat and chemical action.

Polycarbonates (PC)

[Kinds of Thermoplastics] a white, substantially amorphous, very tough and strong material with good heat resistance up to 150 deg C and excellent dimensional stability. It is injection-molded to produce plates, rods, gears, and other shaped parts that advantageously replace die-cast metal parts. Use: cockpit windows and canopies, skylights

1. Melamine and urea 2. Epoxy 3. Alkyds 4. Phenolics 5. Polyester 6. Urethanes 7. Silicones

[Kinds of Thermosetting Plastics]

Alkyds

[Kinds of Thermosetting Plastics] Appear chiefly as molded electrical parts, and as the vehicle in paints, lacquers, and enamels .

Melamine and Urea

[Kinds of Thermosetting Plastics] Hard, durable and dimensionally stable, these similar plastics are resistant to chemicals, electric potential, and heat. Melamine is well known for its use in molded dishes, while urea is useful for incandescent light diffusion and for baked enamels

Silicones

[Kinds of Thermosetting Plastics] Used for clear, water-repellant paints for concrete and masonry surfaces above grade .

Phenolics

[Kinds of Thermosetting Plastics] Used for paints, baked enamels, adhesives, impregnating resins for paper and wood, and finish hardware.

Epoxy

[Kinds of Thermosetting Plastics] Used in buildings for its remarkable adhesive qualities. It may also be used for special paints that are chemically resistant and for special caulking compounds.

Urethanes

[Kinds of Thermosetting Plastics] Used in paint coatings, and as foams, are self-adhesive.

Polyester

[Kinds of Thermosetting Plastics] the plastic most commonly used in large glass-fiber reinforced translucent panels that are strong, rigid, and impact-resistant. Also used for impregnating paper and wood, as laminating material, and for contact adhesive.

Oven Dry

[Lumber: Dryness] 0% board moisture content

Equilibrium Moisture Content

[Lumber: Dryness] 12 to 16% moisture content in the Philippines

Surfaced Dry

[Lumber: Dryness] Of or pertaining to dressed lumber having at a moisture content of 19% or less at the time of manufacture.

Fiber Saturation Point

[Lumber: Dryness] drying process, the point at which cell cavities are void of water, moisture content 25% to 32% further drying results in shrinkage and generally greater strength, stiffness and density of wood

Seasoned

[Lumber] Appropriate amount of moisture removed to make it usable for construction.

Rough Lumber

[Lumber] Sawn, edged and trimmed, but not surfaced.

Dressed Lumber

[Lumber] Surfaced with a planing machine to attain a smooth surface and uniform size

1. Pressure treatment 2. Hot and cold bath method 3. Dipping or immersing the wood in a hot preservative for a short time 4. Brushing

[Methods of Applying Preservatives to Lumber]

Pressure treatment

[Methods of Applying Preservatives to Lumber] A method of applying preservatives to lumber which consists of placing the wood in cylinders into which the preservative is pumped under pressure

Hot and Cold Bath Method

[Methods of Applying Preservatives to Lumber] Consists of first placing the wood in a bath of hot preservative for an hour or more. It is then withdrawn and quickly placed in a bath of cold preservative. This is generally used for creosote preservative

1. Plainsawing 2. Quartersawing 3. Rift Sawing

[Methods of Sawing Wood]

Plainsawing

[Methods of Sawing Wood] Lumber cut TANGENT to annual rings. Preferable when a pleasing pattern is required, as in wall paneling

Rift Sawing

[Methods of Sawing Wood] Saw cuts from a quartered log are always made radially to the center of the tree; radial annual rings - 45 to 75 deg. Wasteful but uniform

Quartersawing

[Methods of Sawing Wood] Wood cut RADIALLY to annual rings at an angle of 45 and 90 deg. It has less shrinkage than plainsawn lumber, important where joints must be kept tight.

Pentachlorophenol

[Oil Type Preservatives] A colorless, crystalline, synthetic compound used in insecticides, fungicides, weed killers, and wood preservatives.

Coal-tar creosotes

[Oil Type Preservatives] Black or brownish oil made from distilling coal tar. Advantages are: highly toxicity to wood-destroying organisms; insolubility in water; ease of application. Disadvantages are its strong, unpleasant odor, cannot be painted, easily ignited when first applied .

Molave

[Philippine Wood - Common] - One of the hardest local woods, - fine texture that makes it smooth to the touch. It's available in pale yellow to pinkish-brownish tone with a lighter sapwood (outer region), and mostly straight grain. It has no distinct odor. Ideal for: window frames, shipbuilding, structural posts, railroad tracks, and other outdoor applications

Kamagong

[Philippine Wood - Common] - Philippine Ebony - wood unique to the country. With a black heartwood (inner region) and gray sapwood, this produces really dramatic, dark timber hence the name. Ideal for: Small, decorative pieces and combat tools like arnis sticks and eskrima

1. Apitong 2. Palosapis 3. Tanguile

[Philippine Wood - Group III] - medium density hardwoods - same nail holding power and strength as Group II but have less tendency to split and shatter

1. Guijo 2. Kalamansanai 3. Manggachapui 4. Narig

[Philippine Wood - Group II] - harder soft woods - greater nail holding power than Group ! - greater strength & shock resisting - more inclined to split

1. Almon 2. White Lauan

[Philippine Wood - Group IV] - true hardwoods - greatest shock resistance and nail-holding power - extremely strong but susceptible to splitting - heaviest and most difficult to work

1. Akle 2. Aranga 3. Bansalagin 4. Dao 5. Ipil 6. Narra 7. Supa 8. Yakal 9. Tindalo

[Philippine Wood - Group I] - softer woods - relatively free from splitting when being nailed -moderate nail-holding power - moderate strength as a beam, - moderate shock resisting capacity

Plastic Film sheets

[Plastic: Product] As water barrier or damp proofing material, it is generally made of polyethylene and polyvinyl

Plastic sheets

[Plastic: Product] Can be used to replace glass in any type of windows or doors, skylights, shower enclosures, or in any area where a translucent, transparent or opaque material in a wide variety of colors are needed in the interior.

Corrugated Plastic Sheet

[Plastic: Product] Make a good roofing material

Lamination

[Plastic: Product] The process applied to paper or fabric impregnated with thermosetting resins. Cotton cloth and paper are used as filler materials, usually in sheet forms, that are bonded together by heat and pressure to form an integral body.

Plastic foam

[Plastic: Product] Used as flotation material, thermal insulators, and shock-resistant mountings. Offers possibilities for lightweight materials of high strength

Plastic sheets

[Plastic: Product] Usually made of acrylate, polyester, or polystyrene plastics, either plain or reinforced with glass-fiber, are available in flat or corrugated sheets and various deformed shapes.

Hardness

[Properties of Wood] - measured by the compression which a piece of timber undergoes when a weight is applied to it

Flexibility

[Properties of Wood] - the amount of piece will bend before breaking Softwoods are generally brittle while most hardwoods are flexible.

Air dried lumber

[Seasoning of Lumber] Seasoned by drying in the air.

Kiln dried lumber

[Seasoning of Lumber] Seasoned in a kiln under controlled conditions of heat, air circulation and humidity. Advantages over Air drying: - reduction in weight - reduction in drying time - killing of fungi & insects - setting the resins - less degrade

Heartwood

[Structure of Wood] - older, harder central portion - darker color than sapwood. - denser, less permeable and more durable - composed of inactive cells and serves only as a mechanical support

Sapwood

[Structure of Wood] - softer, younger outer portion - more permeable, less durable - - usually lighter in color - contains living cells and takes an active part in the life process of a tree

Medium Density Fiberboard (MDF)

[Type of Fiberboard] Made from wood fibers glued under heat and pressure. -It is dense, flat, stiff, has no knots and is easily machined. Its fine particles provide a material without a recognizable "grain". -contains no internal voids, and will produce better edges providing that it is correctly machined.

Acoustic fiber board

[Type of Fiberboard] Manufactured from wood, straw, bagasse pulp pressed into boards with or without holes or slots.

Type X Gypsum Board

[Types of Gypsum Board] Fire Rated

Gypsum Sheathing

[Types of Gypsum Board] Fire protection and bracing of exterior frame walls. It must be protected from the weather by an exterior facing.

Core board

[Types of Gypsum Board] Studless

Wall board

[Types of Gypsum Board] Surface layer for interior walls

Gypsum Formboard

[Types of Gypsum Board] Used as a permanent form in the casting of gypsum concrete roof decks.

Backing board

[Types of Gypsum Board] Used as base layer in multi-ply construction

Water-Resistant Backing Gypsum Board

[Types of Gypsum Board] Water-resistant gypsum core and water-repellant face paper. It maybe used as base for walls of bathrooms, showers, and other areas exposed to wetting.

1. Standard 2. Panel 3. Tempered

[Types of Hardboard]

Panel hardboard

[Types of Hardboard] denser than the standard but not as dense as tempered

Tempered hardboard

[Types of Hardboard] densest, made by impregnated standard board with a tempering compound

Standard hardboard

[Types of Hardboard] interior use only, no moisture allowed

1. Cellulose 2. Synthetic resin 3. Plastics derived from proteins and natural resins

[Types of Plastics]

1. Ordinary plywood 2. Form plywood (formworks) 3. Marine Plywood 4. Fancy Plywood

[Types of Plywood]

Marine plywood

[Types of Plywood] Waterproofed plywood

Particle board

[Types: Wood Composites] Conventional wood chips and sawdust that have been pressed and glued together.

Fiberboard

[Types: Wood Composites] From vegetable fibers such as corn or sugarcane stalks pressed into sheets. It is not very strong, but has good insulating properties therefore it is usually used for ceiling only.

Hardboard

[Types: Wood Composites] Made from processed WOOD CHIPS or fibers subjected to HIGH PRESSURE. A cheaper option than plywood where strength is not required.

Chipboard

[Types: Wood Composites] This type of board is cheap but not very strong and is produced by compressing wood particles together with glue. It is usually used with a hardwood or veneer surface and is used in table tops or cheap furniture.

Plywood

[Types: Wood Composites] most common wood composite it is made of several thin plies, or veneers, of wood that have been glued together. Each ply or veneer is glued so that its grain is at right angles to the grain of the previous ply.

Cresote

[Use: Wood Preservative] Its application include Railway ties, mine timbers, poles, foundation piles, marine piles and bulkheads

Pentachlorophenol

[Use: Wood Preservative] Its application include Utility poles, cross arms, bridge timbers and ties

CCA

[Use: Wood Preservative] Its application includes guide rail posts, utility poles, bridge timbers, piles, structural glued-laminated timbers, landscape timbers, posts, boardwalks, permanent wood foundations and residential construction, decking and fencing

ACA

[Use: Wood Preservative] Its application includes Piles, utility poles, marine timbers, construction lumber

Chromated Zinc Chloride (CZC)

[Water Borne Type Preservatives] Gives protection against decay, insects and fire; can be painted on; has no objectionable odor. Disadvantages are: wood cannot be used in contact with the ground or water

1. Plywood 2. Hardboard 3. Chipboard 4. Fiberboard 5. Gypsum board 6. Fiber cement board 7. Particleboard

[Wood Composites]

Board Foot

a unit of measurement for lumber = thk (in) x width (in) x length (ft) 12

Plastics

synthetic polymers that can be molded or shaped

Wood Composites

wood + other materials - usually 1220mm (4') x 2440mm (8')