4.1.b. Shakes

Try these first

1. 1.

   What are shakes in wood?

   Hint

   Think about how wood might crack.

2. 2.

   Name one type of shake.

   Hint

   Recall the different types we discussed.

3. 3.

   What is a shake in wood?

   Hint

   Think how wood might develop cracks.

4. 4.

   True or False: Heart shakes extend outward from the pith.

   Hint

   Remember the definition of heart shakes.

5. 5.

   Analyze a section of wood with both heart shake and ring shake. Discuss the implications of using such wood in a structural application.

   Hint

   Consider the structural functionalities and the visible implications of defects.

6. 6.

   If a timber supplier presents you with two identical beams, one with a significant star shake and the other with minor heart shakes, which would you select for a high-stress application, and why?

   Hint

   Evaluate the severity of each defect and its effect on strength.