Forestry and Timber Quiz

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