Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
41 Cards in this Set
- Front
- Back
Classification of wood |
Softwood Hardwood |
|
Comes from the conifiers which have needles instead of leaves. |
Softwood |
|
Hardness Flexibility Strength Dutability |
Properties of wood |
|
Comes from the broad leaved or decidious trees |
Hardwood |
|
Methods of sawing wood |
Plain sawing Quater sawing Rift sawing |
|
Refer to lumber cut tangent ring or growth or in commercial 0-45deg. |
Plainsawing |
|
Refers to wood cut radialy to the anual ring or growth or in commercial practice 45-90 deg. |
Quartersawing |
|
Structure of wood |
Sapwood Heartwood |
|
Classification of lumber |
Strip lumber Dimension lumber Board lumber Timber |
|
A lumber less than 2" in thick,less 8" in wide. |
Strip lumber |
|
A lumber more than 5" in any dimension. |
Timber |
|
A lumber less than 2" in thick atleast 8" in wide. |
Board lumber |
|
A lumber more than 2 in thick less than 5 in any dimension. |
Dimension lumber |
|
Process of removing moisture from green wood. |
Seasoning |
|
3 types of seasoning |
Air-drying Kiln drying Pressure treated lumber |
|
Oil-type wood preservatives Water-borne preservatives |
Types of wood preservatives |
|
A type of seasoning,When lumber is subjected to pressure,and injected with chemicals or salt to ensure it from rots. |
Pressure treated lumber |
|
Black or brownish oil, made from distilling coal tar. Highly toxity to wood destroying organism. -Insoluble to water. |
Coal tar creosotes |
|
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 |
|
Products made from a mixture of wood and other materials.,usually 1220mm x 2440mm. |
Wood composite/building board. |
|
A fiber cement reinforced concrete board. Made from 72% portland cement,20%mineralise cellulose fiber,8%calcium carbonate. |
Fiber Cement board.(ficem) |
|
The most common wood composite, it is made by thin plies or veneer of wood that have glued together. |
Plywood |
|
Standard size of plywood |
3x9 and 4x8 |
|
Thickness of plywood |
1/8" 3/16 ,1/4", 3/8" ,1/2" ,3/4" ,1 |
|
Allowable thickness of plywood for double wall partition |
3/16" (4.5mm) and 1/4"(6mm) |
|
Allowable thickness of plywood for drawers and shelves. |
3/8" (10mm) and 1/2" (12mm) |
|
Standard thickness of plywood for subfloors |
1"(25mm) |
|
Types of plywood |
Ordinary plywood Form plywood Marine plywood Fancy plywood |
|
A type of plywood resistant to water. |
Marine plywood |
|
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 |
|
3 types/grades of hardboard |
Standard hardboard Low densety hardboard Temperred hardboard |
|
Brand name of hardboard |
Lawanit Lawanex Masonite |
|
A large class of building board made from wood and particles and a binder/glued. Often face a veneer. Ideal for interior works. |
Chipboard |
|
Panel size of chipboard |
2x4 4x4 4x8 and 6mm-25mm thick. |
|
-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.
|
Medium density fiberboard |
|
Size of MDF |
4 x 8 |
|
Thickness of MDF |
3/16" 1/4" 1/3" 3/4" |
|
Brand named of fiberboard |
CELOTEX CANEX HOMASOTE PHILTEX BONOTEX |
|
Non-combustible building board,with a gypsum core enclosed in tough and smooth paper. Used extensively for drywall construction. |
Gypsum board |
|
Brand of gypsum board |
BORAL ELEPHANT |
|
Made of small wood chips and base materials including cotton,stalk,ricestraw,bagasse, convention wood chips and sawdust. |
Particleboard |