PDM - Precedence Diagram Method
- 1. PRECEDENCE DIAGRAM METHOD - PDM PHAN CAO TAI Joint Master Program National Taiwan University National University of Civil Engineering
- 2. What is PDM?
- 3. A SCHEDULE MODEL What is PDM ? TECHNIQUE
- 4. What is PDM ? ACTIVITY ACTIVITY i j ADM PDM Logical relationship Logical relationship
- 5. Why?
- 6. Why Do We Need To Learn PDM? 1. Available on almost all commercial microcomputer-base on PMS. 2. Around 30% of contracting organization in Europe are using PDM 3. This technique is more versatile as compared to the other network planning.
- 7. Why Do We Need To Learn PDM? 4. Availability of lag has made this technique more adaptable to the planner’s needs. 5. This tool can guide managers in making critical decisions such as to deploy resources based on priority. 6. Can assist the client in determining the duration for extension of time.
- 9. ADVANTAGES & DISADVANTAGES Activity A Activity B Activity C Activity D Activity E
- 10. Logical Relationship FS • Finish to Start SS • Start to Start FF • Finish to Finish SF • Start to Finish
- 11. Logical Relationship Activity A Activity B Finish to Start F S
- 12. Logical Relationship Activity A Start to Start SS Activity B
- 13. Logical Relationship Activity A Fnish to Fnish FF Activity B
- 14. Logical Relationship Activity A Activity B Start to Finish SF
- 15. LS – Lastest Start Time EF - Earliest Finish Time ES - Earliest Start Time CF – Critical Path TF – Total Float LF – Lastest Finish Time Precedence Diagram’s Notation
- 16. Total Float (TF) is the amount of time an activity can be delayed without delaying project end date. Precedence Diagram’s Notation
- 17. How to calculate Float? Float = LS – ES or LF - EF Precedence Diagram’s Notation Activity A ES EF LS LF FORWARD PASS BACKWARD PASS
- 18. Critical Path (CF) is the longest duration path in a network diagram. And is the shortest time to complete project It helps to determine the focus for project management efforts. CF activities have Zero Float Precedence Diagram’s Notation