Intro to Project Management: Project Resource Management - Organizational Chart, Resource Breakdown Structure RBS Responsibility Assignment Matrix RAM RACI

What This Is

An organizational chart, resource breakdown structure (RBS), and responsibility assignment matrix (RAM or RACI) are essential tools for project managers to ensure effective resource allocation, clear roles and responsibilities, and successful project delivery. Imagine you're leading a project to launch a new software product. You need to identify the right team members, assign tasks, and track progress. An organizational chart helps you visualize the team structure, while an RBS breaks down the project into manageable tasks and resources. A RAM/RACI matrix ensures that each task has a clear owner and that stakeholders are informed about their roles.

Key Terms & Formulas

• Organizational Chart: A visual representation of the project team's structure, showing roles, responsibilities, and reporting relationships.
• Resource Breakdown Structure (RBS): A hierarchical decomposition of the project into tasks, activities, and resources, helping to identify and allocate resources effectively.
• Responsibility Assignment Matrix (RAM or RACI): A matrix that assigns roles and responsibilities to team members and stakeholders for each task, ensuring clear ownership and communication.
• RACI Matrix: Roles (R), Accountable (A), Consulted (C), and Informed (I) – a way to categorize stakeholders' involvement in each task.
• EV = % complete × BAC (Earned Value = percent complete times Budget at Completion) – a formula to calculate earned value and track project progress.
• CPI = EV ÷ AC (Cost Performance Index = Earned Value ÷ Actual Cost) – a formula to measure project efficiency and cost performance.
• SPI = EV ÷ PV (Schedule Performance Index = Earned Value ÷ Planned Value) – a formula to measure project schedule performance and efficiency.
• BAC =? (PV × % complete) (Budget at Completion = sum of Planned Value times percent complete) – a formula to calculate the budget at completion.
• RAM =? (PV × % complete) (Responsibility Assignment Matrix = sum of Planned Value times percent complete) – a formula to calculate the responsibility assignment matrix.

Step-by-Step / Process Flow

1. Create an Organizational Chart: Identify the project team members, their roles, and reporting relationships. Use a hierarchical structure to show the team's structure.
2. Develop a Resource Breakdown Structure (RBS): Break down the project into tasks, activities, and resources. Use a hierarchical decomposition to identify and allocate resources effectively.
3. Assign Roles and Responsibilities: Use a Responsibility Assignment Matrix (RAM or RACI) to assign roles and responsibilities to team members and stakeholders for each task.
4. Track Progress: Use earned value (EV), cost performance index (CPI), and schedule performance index (SPI) to track project progress and performance.
5. Monitor and Control: Regularly review the organizational chart, RBS, and RAM/RACI matrix to ensure that the project is on track and make adjustments as needed.

Common Mistakes

• Mistake: Not creating an organizational chart or RBS, leading to unclear roles and responsibilities.
• Correction: Create an organizational chart and RBS early in the project to ensure clear roles and responsibilities.
• Mistake: Not regularly reviewing and updating the RAM/RACI matrix, leading to confusion and miscommunication.
• Correction: Regularly review and update the RAM/RACI matrix to ensure that roles and responsibilities are clear and up-to-date.
• Mistake: Not tracking progress using earned value, CPI, and SPI, leading to poor project performance.
• Correction: Regularly track progress using earned value, CPI, and SPI to ensure that the project is on track.

Exam Tips

• Tip: Be able to explain the difference between a Responsibility Assignment Matrix (RAM) and a RACI matrix.
• Tip: Understand the formulas for earned value, CPI, and SPI, and be able to apply them to project scenarios.
• Tip: Be able to describe the importance of creating an organizational chart and RBS in project management.

Quick Practice Questions

1. If the CPI is 0.8, is the project under or over budget? Answer: Under budget. Explanation: A CPI of 0.8 indicates that the project is performing better than expected, resulting in a lower actual cost.
2. If the EV is $100,000 and the BAC is $200,000, what is the percent complete? Answer: 50%. Explanation: Using the formula EV = % complete × BAC, we can calculate the percent complete as EV ÷ BAC = $100,000 ÷ $200,000 = 0.5 or 50%.
3. If the SPI is 1.2, is the project ahead or behind schedule? Answer: Ahead of schedule. Explanation: A SPI of 1.2 indicates that the project is performing better than expected, resulting in a shorter actual duration.

Last-Minute Cram Sheet

• Organizational Chart: A visual representation of the project team's structure.
• Resource Breakdown Structure (RBS): A hierarchical decomposition of the project into tasks, activities, and resources.
• Responsibility Assignment Matrix (RAM or RACI): A matrix that assigns roles and responsibilities to team members and stakeholders for each task.
• RACI Matrix: Roles (R), Accountable (A), Consulted (C), and Informed (I).
• EV = % complete × BAC (Earned Value = percent complete times Budget at Completion).
• CPI = EV ÷ AC (Cost Performance Index = Earned Value ÷ Actual Cost).
• SPI = EV ÷ PV (Schedule Performance Index = Earned Value ÷ Planned Value).
• BAC =? (PV × % complete) (Budget at Completion = sum of Planned Value times percent complete).
• RAM =? (PV × % complete) (Responsibility Assignment Matrix = sum of Planned Value times percent complete).
• A RACI matrix is not the same as a RAM – RACI is a specific type of RAM.
• Decomposition breaks down work, not activities – it creates the WBS, not the activity list.
• Earned value is not the same as actual cost – it's a measure of progress, not a measure of cost.