6.1. Defender and Challenger Terminology

Try these first

1. 1.

   Define the term 'defender'.

   Hint

   Think about the equipment that is in use right now.

2. 2.

   What does 'challenger' refer to?

   Hint

   Consider an alternative to the existing equipment.

3. 3.

   What is the 'defender' in construction management?

   • The current equipment
   • The new equipment
   • The rental equipment

   Hint

   Think about the equipment you have in your project right now.

4. 4.

   True or False: Economic useful life is the time period when equipment incurs the highest operating costs.

   • True
   • False

   Hint

   Consider what it means to have lower costs.

5. 5.

   Your company owns an excavator that is incurring high downtime costs. Discuss how you would assess whether to replace it or keep it working longer.

   Hint

   Weigh the costs of continuing to operate against the benefits of upgrading.

6. 6.

   Evaluate a scenario where the defender has become obsolete due to technological advancements, yet still functions adequately. Should a replacement be prioritized?

   Hint

   Consider the long-term impacts on your project's efficiency and cost-effectiveness.