Practice Modulus of sub-grade reaction - 29.1.1 | 8. Rigid pavement design | Transportation Engineering - Vol 2
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29.1.1 - Modulus of sub-grade reaction

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the modulus of sub-grade reaction?

💡 Hint: Think about how soil reacts to weight.

Question 2

Easy

At what deflection value is the modulus of sub-grade reaction typically calculated?

💡 Hint: It's a small value that represents slight bending.

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 does the modulus of sub-grade reaction measure?

  • The thickness of the slab
  • The pressure per deflection
  • The total weight of the pavement

💡 Hint: Focus on what K represents in rigid pavement analysis.

Question 2

True or False: A higher modulus of sub-grade reaction allows for a thinner pavement.

  • True
  • False

💡 Hint: Consider the relationship between support and thickness.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

In a pavement project, a soil survey indicates a sub-grade with a modulus of 50 kg/cm³. If a standard load of 10,000 kg is applied at a deflection of 0.2 cm, calculate the pressure applied and discuss the implications on pavement design.

💡 Hint: Break down the formula.

Question 2

Analyze a situation where increasing the modulus from 30 kg/cm³ to 60 kg/cm³ allows for a thinner slab. If the original design was 20 cm thick, how much could this thickness be reduced while maintaining structural integrity?

💡 Hint: Think about the balance of support and deflection limits.

Challenge and get performance evaluation