Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DT > Timbers > Flashcards

Timbers Flashcards

1
Q

What is Forestry Management

A

Sustainable cycle of planting, cultivation and harvesting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is Timber Conversion

A

When Felled trees are cut into manageable lengths and converted into boards or planks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the Two main timber finishes

A

PAR (Plained All Round) and Rough Sawn

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is Green timber

A

Newly felled and unseasoned timber with a moisture quantity of 50%+. Very hard to work with as outdoor applications should have 20% or less and indoor 10% or less. Moisture must be removed to gain strength and reduce dimensional movement.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name two Ways to reduce moisture content

A

Season the wood by air drying or kiln drying (Kiln drying less prone to faults)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Name all the Faults

A

These occur as timbers dry:
Bowing
Splitting
Crooking
Cupping
Twisting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What Is Sustainable Timber

A

Timber supplies approved by the Forest Stewardship Council that regulates that timber supplies are sustainably managed and harvested

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are Manufactured Boards

A

They come in large sheets, often made from recycled or waste wood and adhesives. They are often made using lamination or compression techniques and covered with veneers of high quality timber.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is Lamination

A

The technique of layering materials using heat, pressure and adhesives. Strips of timber are glued together and placed over a jig. Clamps or a vacuum press are used to exert pressure while the adhesive dries.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is Compression

A

Compression uses adhesives, heat and pressure to combine shreds, chips or pulp to produce a larger board. These boards are often covered with a melamine or chemical laminate.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is Rotational Veneer

A

Veneer can be made by rotating a tree trunk to create a long ribbon of thin veneer, cut to length

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the advantages of Rotational Veneer

A

Available in long sheets with few faults or defects, aesthetic flows such as knots can be easily eliminated, made of recycled products, vast range of surface finishes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are the disadvantages of Rotational Veneer

A

Adhesives used can be hazardous if inhaled, edges are hard to finish and the boards are prone to absorbing moisture

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Name the Common Stock Forms

A

Plank, Boards, Mouldings, Dowels and Sheets

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is a moulding

A

timber components with a shaped profile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is a Countersunk Screw

A

A screw that gives a better hold and a neater finish. Also allows a plug or cap to be used to cover the screws head to create a clean and unbroken appearance.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are Knock-Down Fittings

A

Often used for self assembly furniture. Block with hole in attached by nails.

18
Q

What is wasting and abrading

A

The process of removing layers of wood e.g. sanding to get a better finish

19
Q

What is wood turning

A

When a Lathe is used to turn wood on a plate or between two points while it is shaped by tools

20
Q

How is wood bent

A

It is steamed to make it more malleable and then the softened timber is forced around a jig using a strap and left to dry.

21
Q

Advantages of Engineered or Manufactured Wood

A

Can be mixed with glues to give greater strength and stability making it better for construction and domestic uses. Also reuses waste wood products

22
Q

Why is flat pack furniture good

A

less expensive, arrives boxed making it easier to store and transport, easy to assemble. Less aesthetic though

23
Q

What are the Advantages of Commercial Manufacturing

A

CNC machinery ensures mass produced timber components are equal sized parts. Helps minimize waste materials. Screw Holes, slots and patterns can be cut in one process. Machines work quickly and efficiently.

24
Q

What are the Advantages of Commercial Turning

A

CNC wood lathes can create identical cylindrical components once programmed

25
Q

What are the Impacts of Automation and Mechanisation?

A

Improvements in manufacturing methods and the increase in the quality controls consistency and accuracy means products can be easier mass produced

26
Q

What are the ways wood can be protected or visually enhanced using treatments?

A

Preservative
Wax
Oil
Paint
Stain
Varnish

27
Q

What does treating timber do and how can this process be enhanced?

A

Helps extend life of the wood dramatically and a hydraulic press can be used to force treatment deeper into the timber

28
Q

What are the advantages and disadvantages of commercial finishing

A

Modern finishes can extend the life of timbers and can be sprayed on by hand or machine. However they have poor environmental impacts and may damage the environment.

29
Q

What are hardwoods?

A

Woods usually obtained from deciduous trees - stronger and hard wearing but take long time to grow

30
Q

What are softwoods?

A

Woods usually taken from coniferous trees - cheaper and easier to shape and take a shorter time to grow

31
Q

What are manufactured boards

A

Made from the pulped waste sections of trees stuck together with adhesive and able to come in specified sheet forms

32
Q

What are the properties of Ash?

A

Hardwood - tough and flexible -shock resistant - finishes well- used in sports equipment, hand tools and ladders

33
Q

What are the properties of Beech?

A

Hardwood - Strong - dense, close grain - prone to warping and splitting - used in furniture, toys and bench tops

34
Q

What are the properties of Mahogany?

A

Hardwood - Strong and durable - easy to work with and finishes well -used in high end furniture

35
Q

What are the properties of Oak?

A

Hardwood - Strong and Lightweight - used in flooring, furniture and timber framed buildings

36
Q

What are the properties of Balsa?

A

Hardwood - Strong and durable - very lightweight - if too thin can break easily - used in models and floats/rafts

37
Q

What are the properties of MDF?

A

Medium Density Fibreboard - rigid and stable and easy to shape/use - used in flat pack furniture, kitchens and toys

38
Q

What are the properties of Plywood?

A

Laminated board that is very stable - used in furniture, shelving and fencing

39
Q

What are the properties of Chipboard?

A

Not as strong as MDF or Plywood - very cheap and made from recycled materials - used in flooring, low end furniture, kitchen units and cupboards

40
Q

What are the properties of Larch?

A

Softwood - Tough and durable - good water resistance - used in fencing, cladding, decking and outdoor furniture

41
Q

What are the properties of Pine?

A

Softwood - Lightweight - easy to work with - can be very knotty - used in furniture, construction and window frames

42
Q

What are the properties of Spruce

A

Softwood - Lightweight and easy to work with - used in furniture, musical instruments and construction

DT (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions