1 / 15

Project Management

Project Management. Dr. Everette S. Gardner, Jr. PERT / CPM advantages. 1. Disciplined planning 2. Realistic objectives 3. Unambiguous communication 4. Allows management by exception of critical tasks. Drawing networks. Activities on nodes (AoN) A B Activities on arrows (AoA)

marly
Download Presentation

Project Management

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Project Management Dr. Everette S. Gardner, Jr.

  2. PERT / CPM advantages 1. Disciplined planning 2. Realistic objectives 3. Unambiguous communication 4. Allows management by exception of critical tasks Project Management

  3. Drawing networks • Activities on nodes (AoN) A B • Activities on arrows (AoA) A B • Dummy activities – In AoA, any 2 events in network can be directly connected to only one activity. Wrong: Right: x w x 12 11 w 12 11 y y Dummy 13 Project Management

  4. Drawing networks (cont.) A x 98 • Many computer programs require one initial event and one terminal event • What’s wrong with this? 1 0 100 y B 2 99 Dummy start Dummy stop 10 J L 12 11 K Project Management

  5. Drawing exercise 1 Activity Predecessors A - B A C A D B,C E C F D G E,F Draw this format in AoN format. Repeat in AoA format. Project Management

  6. Drawing exercise 2 Activity Predecessors A - B - C A,B D A,B E C F C,D G F Project Management

  7. Scheduling calculations: 1. Forward pass – Start each activity as early as possible. ES = Max. EF of immediate predecessors EF = ES + Task time 2. Backward pass – Work backward from the project completion time in step 1, starting each activity as late as possible. LS = LF – Task time LF = Min. LS of immediate successors 3. Compute slack times. Slack = LS – ES or LF – EF Project Management

  8. Black Lagoon project Work breakdown table: Preceding Succeeding tasks tasks DescriptionTask #DaysABAB Edit script 1 2 3 4 Casting 2 1 5 6 Special effects 3 2 1 5 Build sets 4 2 1 6 Horror scenes 5 3 3 4 7 8 Other scenes 6 1 2 4 8 Previews 7 1 5 Edit film 8 2 5 6 Project Management

  9. Black Lagoon project (cont.) Precedence diagram: #3 (2 days) Special effects #5 (3 days) Horror scenes #7 (1 Day) Previews #1 (2 days) Edit script #4 (2 days) Build sets #8 (2 days) Edit film #6 (1 day) Other scenes #2 (1 day) Casting Project Management

  10. Time-cost tradeoffs • Activity direct costs Crash – Activity fully expedited Normal – No expediting Direct cost Time Project Management

  11. Time-cost tradeoffs (cont.) • Project direct costs All activities crashed All activities normal Direct cost Time Project Management

  12. Time-cost tradeoffs (cont.) • Project total costs Total cost Indirect cost (overhead) Total cost Direct cost Time Project Management

  13. Network crashing problem Duration 9 4 1 Consider the following AoA network: ** Activity 3-5 cannot be expedited The duration of each task is shown above the arrows. The cost slope for each task is shown below the arrows. The initial critical path is 0-1-2-4-5 @ 22 days. The initial cost is $3,050. Cost slope 30 7 4 150 70 0 6 5 5 50 90 8 3 80 ** 4 2 3 200 Project Management

  14. Network crashing problem (cont.) Cost and time data are: NormalCrash ActivityTimeCostTimeCostCost Slope 0-1 4 days $210 3 days $280 70 0-2 8 400 6 560 80 1-2 6 500 4 600 50 1-4 9 540 7 600 30 2-3 4 500 1 1,100 200 2-4 5 150 4 240 90 3-5 3 150 3 150 ** 4-5 7 600 6 750 150 3,050 4,280 ** Activity 3-5 cannot be expedited Project Management

  15. Network crashing problem (cont.) Develop schedules ranging from 22 to 17 days for this project. Record the critical paths and total costs below: Schedule Critical Total Duration Path(s) Cost 22 0-1-2-4-5 $3,100 21 20 19 18 17 Project Management

More Related