WorksheetsTimber and Timberwork Quiz
Total questions: 11
Worksheet time: 6mins
Which layer in the tree is responsible for transporting sugars synthesized in the leaves downwards?
Cambium
Sapwood
Bast layer
Radial rays
Fibre Saturation Point is when the wood lose the water held within the cell cavities without shrinkage
False
True
The main constituents of timber are
cellulose, hemicellulose and glucose
cellulose, hemicellulose and lignin
Microfibrils, cellulose and resin
Lignin and glucose
What is the primary characteristic of hardwoods in temperate climates?
They have needle-shaped leaves.
They are evergreen.
They are deciduous, losing their leaves in autumn.
They grow predominantly in tropical climates.
What percentage of timber used in the UK construction industry is accounted for by softwood?
50%
60%
80%
90%
Which of the following is a characteristic of softwoods?
Broad leaves
Needle-shaped leaves
Deciduous nature
Grows in tropical climates
Why are the ends of timber protected with waterproof coatings during air seasoning?
To enhance the color of the wood
To prevent rapid moisture loss and splitting
To make the wood more flexible
To increase the weight of the wood
What moisture content range is typically achieved for softwoods in the UK through air seasoning?
5% to 10%
17% to 23%
25% to 30%
30% to 35%
What is the maximum panel thickness that can be produced for CLT?
200 mm
300 mm
400 mm
500 mm
Conversion defects includes:
knots, compression and tension wood
sloping grain
wrapping, splits and checks
abnormal growth rings
Softwood have large cells or vessels for conducting food functions
true
false
