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Gantt Charts

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Do you understand Gantt charts? Use Figure 6-11 and test your understanding by answering the following questions.
a. When is the activity “convert data files” scheduled to begin and end?
b. When is the activity “test computer software” scheduled to begin and end?
c. How much time did it actually take the company to complete the task “Prepare the physical site location?” Was this more or less time than planned?
d. How much time did it actually take the company to complete the task “Determine the functional changes in the system?” Was this more or less time than planned?
e. Given what has happened so far, when can the activity “Acquire and install computer equipment” actually begin?
f. Given what has happened so far, when can the activity “Select and assign personnel” actually begin?

SOLUTION

a. Activity G (“convert data files”) is scheduled to begin at the beginning of week 22 and end 6 weeks later (the end of week 28).

b. Activity I (“test computer software”) is scheduled to begin at the beginning of week 28 and end 5 weeks later (the end of week 32).

c. The Gantt chart shows that the actual time to complete activity A (“prepare the physical site”) was 11 weeks. This was less than the 17 weeks originally planned for it.

d. The Gantt chart shows that the actual time to complete activity B (“determine the functional changes”) was 16 weeks. This was more than the 14 weeks originally planned for it.

e. Activity E (“acquire and install computer equipment”) can only begin after the company completes activity A. Because the company was able to complete activity A early (in 11 weeks), it can also begin activity E early i.e., at the start of week 12.

f. Activity C (“select and assign personnel”) can only begin after the company completes activity B (“determine functional changes”). According to the Gantt chart, there was a delay in completing this activity, which was completed at the end of week 14. Thus, activity C can actually begin at the start of week 15.

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