Timbers

Question 1

Timbers

Answer 1

Planks of wood squared for use in building or carpentry

Question 2

Hardwood Qualities

Answer 2

Sustainable
Tight grain
Loose leaves
Expensive
Hard
Have fruit
Slow

Question 3

Hardwood examples

Answer 3

Oak, mahogany, ash, beech, teek

Question 4

Softwood Qualities

Answer 4

Looser grain
Cheaper
Evergreen
Have needles
Tall
Quicker growing

Question 5

Softwood examples

Answer 5

Larch spruce pine fir cedar

Question 6

Manufactured board qualities

Answer 6

Cheaper
Any size
Any thickness
Produced by gluing
Veneer laminates

Question 7

What is seasoning?

Answer 7

Storing wood to keep it in good condition
Gets rid of moisture

Question 8

Kiln seasoning

Answer 8

Seasoning in an oven

Question 9

Advantages of kiln seasoning

Answer 9

Much quicker
Could split
No bugs and fungus

Question 10

Kiln seasoning disadvantages

Answer 10

Could split more expensive

Question 11

Timber Defects

Answer 11

Splitting,
Knots,
Decay,
Woodworm

Question 12

Splitting

Answer 12

Unavoidable issue where ends split,
Preventable by painting ends of planks. Or cutting off ends to remove splits

Question 13

Knots

Answer 13

Where a branch was attached to a tree
Live knots are ok, dead knots can fall out, must be avoided

Question 14

Decay (dry rot)

Answer 14

Serious problem caused by incorrect seasoning or poor building maintenance
Happens when moisture is over 20%

Question 15

Woodworm

Answer 15

Common furniture Beetle lays eggs on timber, larvae eat wood for 1 year the emerge as adult beetles

Question 16

Stock forms of wood

Answer 16

Rough Sawn
Natural Timber
Manufactured boards
Veneers
Planed square edge
Smooth all round
Mouldings

Question 17

Performance characteristics

Answer 17

Warpage
Steam bending
Shrinkage
Grain pattern and direction
Resistance to decay
Toughness