Question 2.111

81. To build a new addition on a house, the following tasks must be completed:

  1. Lay foundation.
  2. Erect sidewalls.
  3. Erect roof.
  4. Install plumbing.
  5. Install electric wiring.
  6. Lay tile flooring.
  7. Obtain building permits.
  8. Put in door connecting new room to existing house.
  9. Install track lighting on ceiling.
  10. Install wall air-conditioner.

Construct reasonable time estimates for these tasks and a reasonable order-requirement digraph. What is the fastest time in which these tasks can be completed?

81.

Answers will vary.