Question 1
a. Explain the following properties of timber:
- grain;
- density;
- working of wood;
- equilibrium moisture content.
b.
(i) List two methods of conversion.
(ii) State two reasons why timbers are converted.
(iii) List two artificial defects in timber.
Observation
Question 1(a)(i) required the students to explain the term equilibrium moisture content. The expected response is:
It is a period during the seasoning process in wood when the moisture or sap present in the wood is at equilibrium or same level with the relative humidity of the environment where the wood is located.