Practice Safety Margins from Guidelines - 1.4 | 4. Understanding u and X | Construction Engineering & Management - Vol 3
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Knowledge

1.4 - Safety Margins from Guidelines

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does the term 'u' represent in crane stability?

💡 Hint: Think about the tipping point of the crane.

Question 2

Easy

What is the purpose of outriggers on a crane?

💡 Hint: Consider how cranes stabilize themselves when lifting heavy loads.

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 'X' represent in crane calculations?

  • The load line distance
  • The distance between the load line and the tipping axis
  • The distance from the center of the boom

💡 Hint: It's related to how the crane balances loads.

Question 2

True or False: The power crane shovel association recommends that crawler cranes should not exceed 75% of tipping load.

  • True
  • False

💡 Hint: Think about how safety guidelines help prevent accidents.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A crawler crane rated to lift 200 tons is to operate at a radius of 30m with a fulcrum distance of 10m. Calculate 'X' and determine the working load if the safety margin recommended is 75%.

💡 Hint: Apply the formulas we discussed earlier.

Question 2

Analyze how operating a truck-mounted crane without outriggers on uneven terrain can lead to an accident, detailing the conditions leading to a tipping incident.

💡 Hint: Consider what happens to stability when the supporting surface is compromised.

Challenge and get performance evaluation