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Read the tutorial information below about calculating estimates for project activity times. This tutorial is intended for you to learn how project activity times are calculated for development of the project plan/schedule and critical path.
A project consists of a series of activities in which some activities need to be completed before others can begin, and some can be completed concurrently. Every project is different. Projects range from small to very large, involving thousands of activities. Regardless of a project’s size or complexity, the project manager must control the activities, schedule, and budget. The program evaluation and review technique (PERT) and critical path method (CPM) are the two most commonly used methods to develop a project plan and identify the critical path. Both are quantitative approaches with many similarities, but both depend on accurate activity time estimates. We will begin at the point where the project manager and project team has identified the project team has identified the project major activities and predecessor activities. The next step is to assign a time to each activity. The table below can be used to do this. The result is the ‘expected’ activity times for planning and control purposes.

Part 1 – Complete the following exercise by filling in the table below for the estimated activity times.

Project Management Software Tool
Part 2 – You will be required to demonstrate the operation of the ProjectLibre software and analyze the uses and value of such tools to project management.
Install and create a new project in ProjectLibre by following these instructions:
Visit https://sourceforge.net/projects/projectlibre/ where you will select “Download.” After five seconds, the installer should begin downloading. Open the downloaded installer (Downloads folder), accept the terms in the license agreement, and select “Install.” When the installer finishes, select “Finish.” Find the installed application on your computer (program files), and accept the terms and conditions. You will need to provide an email address. From here, you can use the following videos (or any others you find) to learn how to create a new project: The video “Introduction to ProjectLibre” https://youtu.be/LSELiQqJETA provides appropriate procedures to complete this assignment. https://youtu.be/bSX1VSdnFv4

Project Description – An airline maintenance organization is tasked to complete a special project. An airworthiness directive was issued by the FAA requiring certain aircraft to be inspected for possible fuel line chafing in the main fuel cell. The company has one such aircraft in operation. The company asks you to take charge of a project and complete the required inspection in 20 days or less. The aircraft cannot remain out of service for more than this time. The project will utilize a seven-day workweek. A team meeting comprised of those who will be needed to complete the project was conducted. The team defined the project activities needed and developed estimated activity times as shown below:

Use this data to populate the ProjectLibre software basic project plan. It will not be necessary to consider resource assignments. Once your plan is developed, use the menu at the top of the screen and review all the different types of reports and information this tool can provide.
Provide an overview of your project plan, together with a screenshot or copy of your software-generated plan. Analyze the ProjectLibre output and include the following:

  1. Define the project critical path. Which activities does the critical path include? (The critical path is identified by the red bars.)
  2. Will this project finish on time (20 days) according to the plan?
  3. In which ways would the project manager use the project plan/schedule and critical path to manage the project?
  4. How would the project be affected if the activity time estimates were too optimistic or too pessimistic?
  5. How valuable do you think a software-developed project plan like this is to project managers?

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