Worksheet 4 – 13002 (v3) Demonstrate knowledge of timber used in construction

Student name:

Name the timber that the following borer attack.

Common borer.

Two-toothed longhorn borer.

Pinhole borer.

Identify two factors that can prevent fungal growth in timber.

1. 2.

Identify two factors that will prevent wood boring insect attack in timber.

1. 2.

What would indicate the following conditions have affected timber?

Ultraviolet light.

Mechanical abrasion.

Moisture fluctuation.

Chemical damage.

Storage and stacking damage.

Bacteria.

What effect can insect attack have on timber?

Which one of the following is an example of deterioration of timber due to insect damage?

Picture A	Picture B	Picture C

Answer:

What effect can dry and wet rot have on timber?

In the pictures below, what damage is caused by dry rot and what is caused by wet rot?

WORKSHEET 4	Assessor Initials:	Date: