20.2.1 - Contact Pressure
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Practice Questions
Test your understanding with targeted questions
What is contact pressure?
💡 Hint: Think about pressure and the connection between the tire and pavement.
Why is wheel load important in pavement design?
💡 Hint: Consider the weight that the pavement must support.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main influence of contact pressure on pavement design?
💡 Hint: Consider the relationship between weight and pavement longevity.
True or False: Moving loads at higher speeds cause more pavement damage than at lower speeds.
💡 Hint: Think about stress distribution related to speed.
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Challenge Problems
Push your limits with advanced challenges
A vehicle with a single axle carrying a weight of 40 kN has a tire pressure of 200 kPa. Calculate the contact area and discuss how this could impact pavement design preferences.
💡 Hint: Use the contact pressure formula to find the area.
Consider a road designed for heavy truck traffic with regular speeds of 20 km/hr. Discuss how this design might change if the trucks were moving at just 5 km/hr.
💡 Hint: Reflect on how speed changes affect load impacts.
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