2.11.1 - Retention and Penetration Checks
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Practice Questions
Test your understanding with targeted questions
What does retention measure in timber preservation?
💡 Hint: Think about how much treatment is 'left' in the wood.
Why is penetration depth important?
💡 Hint: How deep is the treatment into the wood?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is 'retention' in timber preservation?
💡 Hint: Think about what retention signifies in preservation.
True or False: Penetration indicates how deeply the preservative has treated the wood.
💡 Hint: Consider the meaning of penetration in context.
1 more question available
Challenge Problems
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A new batch of timber has a total weight of 80 kg and retains 10 kg of preservatives. How would you calculate the retention, and why is this important for the longevity of the wood?
💡 Hint: Think about the proportion in relation to the weight.
A timber piece shows that the preservative only penetrated 5 cm deep after testing. If the expected depth was at least 10 cm, discuss the implications for the wood’s durability.
💡 Hint: What happens if the treatment does not go deep enough?
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