Paper, Order, or Assignment Requirements

two question sheets one is a calculation questions and the other is a research base questions, about engineering materials. all questions should be answered and complete

 

Question E.1

What is the difference between early wood and latewood? Describe each.

(5 marks)

 

Question E.2

What are the types of organisms that attack wood?

(5 marks)

 

Question E.3

Discuss the anisotropic nature of wood. How does this phenomenon affect the performance of wood?

(5 marks)

 

Question E.4

What is the fiber saturation point? What is the effect of the fiber saturation point on the shrinkage of wood in the different directions? How does shrinkage affect the properties of timber?

(5 marks)

 

Question E.5

What are the main components of wood according to its general structure?

(5 marks)

 

Question E.6

Discuss why engineered timber beams can be much longer than natural timber beams?

(5 marks)

 

 

Question E.7

Discuss the fire resistance of timber

(5 marks)

 

Question E.8

What are the factors affecting the strength of wood? How to influence?

(5 marks)

 

Question E.9

Discuss the effect of fibres orientation on the strength of natural timber. Explain how glue laminated timber may compensate the effect of fibres orientation.

(5 marks)

 

Question E.10

Sketch and discuss the typical stress–strain curve for timber. On the graph, show the modulus of elasticity.

(5 marks)

 

Question E.11

What are the main advantages of engineered wood products over natural-timber members?

(5 marks)

 

Question E.12

Enumerate and discuss different types of engineered timber.

(10 marks)

 

Question E.13

How can the change of wood moisture affect the capacities of timber?  (When there is too much water or when the water evaporates)

(5 marks)

 

Question E.14

Describe the process for making glue laminated timber.

(5 marks)

 

Question E.15

How would you protect timber against moisture?

(5 marks)

 

Question E.16

What are the two main classes of wood? What is the main use of each class? State the names of two tree species of each class.

(5 marks)

 

Question E.17

Why are fibrous materials ‘stronger’ than ‘bulk materials’.

(5 marks)