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41 Cards in this Set
- Front
- Back
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Classification of wood |
Softwood Hardwood |
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Comes from the conifiers which have needles instead of leaves. |
Softwood |
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Hardness Flexibility Strength Dutability |
Properties of wood |
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Comes from the broad leaved or decidious trees |
Hardwood |
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Methods of sawing wood |
Plain sawing Quater sawing Rift sawing |
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Refer to lumber cut tangent ring or growth or in commercial 0-45deg. |
Plainsawing |
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Refers to wood cut radialy to the anual ring or growth or in commercial practice 45-90 deg. |
Quartersawing |
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Structure of wood |
Sapwood Heartwood |
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Classification of lumber |
Strip lumber Dimension lumber Board lumber Timber |
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A lumber less than 2" in thick,less 8" in wide. |
Strip lumber |
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A lumber more than 5" in any dimension. |
Timber |
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A lumber less than 2" in thick atleast 8" in wide. |
Board lumber |
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A lumber more than 2 in thick less than 5 in any dimension. |
Dimension lumber |
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Process of removing moisture from green wood. |
Seasoning |
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3 types of seasoning |
Air-drying Kiln drying Pressure treated lumber |
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Oil-type wood preservatives Water-borne preservatives |
Types of wood preservatives |
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A type of seasoning,When lumber is subjected to pressure,and injected with chemicals or salt to ensure it from rots. |
Pressure treated lumber |
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Black or brownish oil, made from distilling coal tar. Highly toxity to wood destroying organism. -Insoluble to water. |
Coal tar creosotes |
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A type of wood preservative. A mixture of petroleum oil and 5% pentachloropenol. -high protection againts decay,fungi and termites. Can be painted,odorless |
Pentachloropenol |
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Products made from a mixture of wood and other materials.,usually 1220mm x 2440mm. |
Wood composite/building board. |
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A fiber cement reinforced concrete board. Made from 72% portland cement,20%mineralise cellulose fiber,8%calcium carbonate. |
Fiber Cement board.(ficem) |
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The most common wood composite, it is made by thin plies or veneer of wood that have glued together. |
Plywood |
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Standard size of plywood |
3x9 and 4x8 |
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Thickness of plywood |
1/8" 3/16 ,1/4", 3/8" ,1/2" ,3/4" ,1 |
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Allowable thickness of plywood for double wall partition |
3/16" (4.5mm) and 1/4"(6mm) |
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Allowable thickness of plywood for drawers and shelves. |
3/8" (10mm) and 1/2" (12mm) |
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Standard thickness of plywood for subfloors |
1"(25mm) |
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Types of plywood |
Ordinary plywood Form plywood Marine plywood Fancy plywood |
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A type of plywood resistant to water. |
Marine plywood |
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A paneling materials made from processed wood chips. Smooth and very rigid panel, Cannot be used for exterior because its absorb water. Also known as "masonite". |
Hardboard |
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3 types/grades of hardboard |
Standard hardboard Low densety hardboard Temperred hardboard |
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Brand name of hardboard |
Lawanit Lawanex Masonite |
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A large class of building board made from wood and particles and a binder/glued. Often face a veneer. Ideal for interior works. |
Chipboard |
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Panel size of chipboard |
2x4 4x4 4x8 and 6mm-25mm thick. |
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-A finishing materials made from vegetables fiber such as corn,sugarcane stalk press into sheet. -Not very strong but good for insulation -Contains no internal voids. -Usually use for ceiling.
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Medium density fiberboard |
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Size of MDF |
4 x 8 |
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Thickness of MDF |
3/16" 1/4" 1/3" 3/4" |
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Brand named of fiberboard |
CELOTEX CANEX HOMASOTE PHILTEX BONOTEX |
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Non-combustible building board,with a gypsum core enclosed in tough and smooth paper. Used extensively for drywall construction. |
Gypsum board |
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Brand of gypsum board |
BORAL ELEPHANT |
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Made of small wood chips and base materials including cotton,stalk,ricestraw,bagasse, convention wood chips and sawdust. |
Particleboard |
