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Exam 10: Project Scheduling: Lagging, Crashing, and Activity Networks

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Question 1

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Sketch the network described in the table in AOA format.

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Question 2

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A project has the activity duration and cost information indicated in the table where all times are in weeks. What is the total cost for completing this project in 50 days?

A) $253,000
B) $237,000
C) $216,000
D) $207,000

E) B) and C)
F) C) and D)

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Question 3

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The critical path may not contain a dummy activity.

Use the Gantt chart and the activity list to determine when resource 5 is free.

Crashing costs for a project are governed by the function: where t represents the number of days crashed (see graph). The project manager wants to crash the project, and is willing to pay up to $1,000 per day saved. How many days can be saved before the per-day cost is too high?

Use the Gantt chart and the activity list to determine which resource is free for use in another project before the others.

A project has the activity duration and cost information indicated in the table where all times are in weeks. There is a penalty of $5,000 per week for every week the project extends beyond 45 weeks. What is the lowest total cost for completing this project?

What is the minimum cost completion time for this project if the activities have normal and crash costs as indicated and there is a $1,000 fixed cost for each day on site plus a $500 penalty for each activity that is crashed? The crash costs represent the cost of a fully expedited activity. For example, reducing activity Y from 13 days to 12 days costs an extra $100 on top of the $500 expediting cost for a total cost of $2,600. Reducing Y from 13 days to 10 days costs an extra $300 on top of the $500 expediting cost, for a total activity cost of $2,800.

The three principal methods for accelerating project activities are to change the __________, __________, and __________ of the project resources.

Dummy activities have a duration equal to the:

Quite often the marginal gains in employee productivity decrease dramatically with the increased use of overtime.

The most common type of logical sequencing between tasks is referred to as the:

The AOA network described by this table needs:

Activity X has the start to finish relationship shown with activity Y and both have early start and finish times as shown. Which statement is best?

Use the Gantt chart and activity list to determine when resource 3 is free.

In analyzing crash options for project activities, each activity has a slope that is calculated as the __________ divided by the __________.

AOA is a more useful technique than AON if the project is complex and has many significant milestones.

AOA networks have an advantage over AON networks:

The most common method for shortening activity durations involves the decision to:

Consider the project described by the table where all durations are in days and the costs in dollars. What is the minimum cost of completing this project in 150 days?