Practice Retention and Penetration Checks - 2.11.1 | 32. Testing of Timber | Civil Engineering Materials, Testing & Evaluation - Vol 2
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2.11.1 - Retention and Penetration Checks

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does retention measure in timber preservation?

💡 Hint: Think about how much treatment is 'left' in the wood.

Question 2

Easy

Why is penetration depth important?

💡 Hint: How deep is the treatment into the wood?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is 'retention' in timber preservation?

  • A) Depth of preservative
  • B) Amount of preservative in wood
  • C) Type of preservative

💡 Hint: Think about what retention signifies in preservation.

Question 2

True or False: Penetration indicates how deeply the preservative has treated the wood.

  • True
  • False

💡 Hint: Consider the meaning of penetration in context.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

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.

Question 2

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?

Challenge and get performance evaluation