PERFORMANCE CHARACTERITICS OF MATERIALS

Question 1

what to consider when picking materials

Answer 1

proposed manufacturing method

material cost

impact on the environment

working properties of the material

Question 2

what are stock forms

Answer 2

the standard sizes for different materials which are recognized internationally

Question 3

what makes woods strong

Answer 3

parallel strands of cellulose fibers held together by a lignin binder. These long chains of fibers make the wood exceptionally strong they resist stress and spread the load over the length of the board.

Question 4

types of wood seasoning

Answer 4

air seasoning and kiln seasoning

Question 4

air seasoning

Answer 4

• inexpensive
• outdoor wooden products

Question 4

describe how air seasoning works

Answer 4

wood planks are put in a shelter to protect them from rain and other forms of precipitation. this process is done using air so that the wood planks adjust to environmental conditions and not have defects as they are being exposed to the same moisture content