timbers Flashcards
1
Q
stock forms
A
- rough sawn
- planed square edge (PSE)
- planed all round (PAR)
- natural wood
- manufactured board
- mouldings
2
Q
characteristics
A
- strong in direction of grain
- seasoning prevents defects
- wood dust can be hazardous
- biodegradable
- can be recycled
- expands and shrinks with changes in humidity
3
Q
processing
A
- cut from trees
- debarked
- sawn into planks
- seasoned (kiln or air)
4
Q
hardwoods
A
- from deciduous trees
5
Q
oak
A
- hardwood
- hard
- tough
- good weather resistance
- attractive grain
- contains tannic acid which corrodes steel
- furniture
- joinery
- flooring
6
Q
ash
A
- hardwood
- tough
- attractive grain
- open grain increases flexibility
- ladders
- tools
- laminating
7
Q
mahogany
A
- hardwood
- easily worked
- durable
- high quality finish
- high end furniture
- veneers on manufactured boards
8
Q
teak
A
- hardwood
- hard
- tough
- natural oils resist moisture/acids/alkalis
- outdoor furniture
- lab benches
9
Q
birch
A
- hardwood
- hard
- close grained
- resistant to warping
- furniture
- indoor panelling
- veneers
10
Q
beech
A
- hardwood
- fine finish
- tough
- durable
- hard
- steamed (white) and un-steamed (pink)
- furniture
- chopping boards
- veneers
11
Q
softwoods
A
- from coniferous trees
12
Q
pine
A
- softwood
- light
- easy to work with but can split
- cheap furniture
- construction
- decking
13
Q
spruce
A
- softwood
- straight grain
- resistant to splitting
- can decay quickly
- indoor furniture
- construction
14
Q
douglas fir
A
- softwood
- straight/slightly wavy grain
- good corrosion resistance
- construction
- joinery
15
Q
larch
A
- softwood
- durable
- hard
- tough
- grain fades to silver upon exposure outside
- good water resistance
- outdoor furniture
