Problems

22-1 Describe the five types of buffers used by the Critical Chain methodology, and the unique purpose of each one.

22-2 How should a resource manager decide which task a resource should work on, when there is a conflict?

22-3 In what ways does a Critical Chain plan address Deming's concerns about common cause variation?

22-4 Is a Critical Chain schedule more useful to people planning and managing tasks, or to people actually performing the tasks? Explain.

22-5 Describe the primary role of the "drum" manager.

22-6 Describe four ways that Critical Chain is different from (extends) the Critical Path approach (as Critical Path is traditionally applied)?

22-7 How could a buffer report alert a manager to a schedule problem?

22-8 The following are different measurements used by organizations for project managers and team members. Which two represent a Critical Chain philosophy?

a. Accuracy of task time estimates b. Do your work as fast as possible and pass it on to the next resource as early as possible.

c. Finish your task by the due date d. Finish the project on time or early

22-9 From an executive perspective, which of the following are the major benefits of a Critical Chain approach?

a. Improved cash flow b. Less time to review major projects, with better reporting c. More projects completed each year using the same resources d. Better performance to milestones

22-10 Two project managers are looking for the same resource to perform work on their projects. In one project, the work is on a task on a feeding path, in which the feeding buffer is 95 percent consumed. In the other project, the work is on the Critical Chain, in which the Critical Chain is 50 percent complete and the project buffer is 0 percent consumed. Which task should the resource be assigned to first? Why?

22-11 Critical Chain is a methodology to help managers plan projects and manage their execution to deliver the projects on time, on budget, and within scope. In each case below, given the two choices, identify which choice best fits with a Critical Chain approach.

a. Plan has 10,000 tasks or plan has 300 tasks.

b. Resources are identified by individual name or resources are identified by pool name.

c. In a multiproject environment, there is one master scheduler or each project manager determines when his project will start.

d. Team members know the estimated effort for a task or team members do not know the estimated effort for a task.

22-12 Why must executives buy into the multiproject Critical Chain approach?

22-13 There are three major software products that support Critical Chain. One product is an "add-on" to Microsoft Project. Describe one major advantage of being linked to Microsoft Project and one major disadvantage.

22-14 One of the software products that supports Critical Chain is based on the Oracle database. Describe one major advantage of having a project management product use the Oracle database and one major disadvantage.

22-15 One of the software products that supports Critical Chain has its own proprietary database. Describe one major advantage of having a project management product use its own database and one major disadvantage.

22-16 Why does the Critical Chain methodology claim that individual tasks cannot be protected by inflated estimates or due dates? How does buffering a project and feeding paths provide greater predictability in a project outcome?

22-17 If you were a project manager in your first Critical Chain project, how would you convince team members to pass their work on early to the next resource?

22-18 As a resource manager, what information do you need from your resources daily or weekly in order to keep the Critical Chain database up to date?

22-19 In the multiproject environment, the drum becomes the anchor according to which new projects are released into the system. From the case studies, is the drum typically a resource used close to the beginning of a project or closer to the end of a project? Why?

22-20 For each buffer category below, indicate how many buffers you would expect to find in any single project?

a. Project buffer b. Feeding buffer c. Resource buffer d. Strategic resource buffer e. Drum buffer

Project Management Made Easy

Project Management Made Easy

What you need to know about… Project Management Made Easy! Project management consists of more than just a large building project and can encompass small projects as well. No matter what the size of your project, you need to have some sort of project management. How you manage your project has everything to do with its outcome.

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