7.1.c. Shrinkage and Swelling Tests

Try these first

1. 1.

   What happens to wood when it absorbs moisture?

   Hint

   Think about water and sponges.

2. 2.

   What happens to wood when it dries out?

   Hint

   Consider drying laundry.

3. 3.

   What is the process called when wood expands due to moisture absorption?

   • Erosion
   • Condensation
   • Swelling

   Hint

   Think about how a sponge acts when wet.

4. 4.

   True or False: Shrinkage occurs when wood dries out.

   • True
   • False

   Hint

   This is the opposite of what happens when wood is wet.

5. 5.

   You are an engineer tasked with specifying wood for a humid environment. Discuss the properties you would look for based on shrinkage and swelling tests.

   Hint

   Remember: Compare how different wood types react to moisture changes.

6. 6.

   Design a construction strategy that accommodates potential wood shrinkage in a dry climate.

   Hint

   Think about how to allow movement without causing stress.