Exercises are self-motivated activities to keep fit. Here at the CPM tutor, exercises are provided to assist you to practice what you have learned in previous sections of the tutorial. The exercises in Chapter 7 are provided to assist you to assess your understanding of sequence and duration as described by arrow diagrams, precedence diagrams, and fenced-bar charts.

exercise 3 - roadwork

Using the set of tasks, their sequence and duration, shown below, build an arrow diagram, a precedence diagram, and a fenced-bar chart.

Activity Prior Activity Duration (work days)
Start Job none 1
Survey Mile Start Job 1
Clear and Grub Survey Mile 2
Excavate Clear and Grub 1
Lay Pipe Excavate 3
Weld Pipe Lay Pipe 2
Test Pipe Weld Pipe 1
Backfill Test Pipe 1

Extra Credit

How would you modify this schedule if you were doing the same work for 15 miles?

What if the terrain in each reach was slightly different?