Precedence Diagram - PowerPoint PPT Presentation

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Precedence Diagram

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  1. Precedence Diagram DR. Nabil Dmaidi

  2. Precedence Diagram Advantages of using Precedence Diagram: 1. No dummy activities are required. 2. A single number can be assigned to identify each activity. 3. Analytical solution is simpler. DR. Nabil Dmaidi

  3. Redundant Linkages 20 A 30 B 30 C (a) Incorrect Representation 20 A 30 B 40 C (b) Correct Representation DR. Nabil Dmaidi

  4. Closing the network to giveSingle Beginning and Ending Nodes A D B C E (a) Incorrect Representation A D Starting Dummy Finish Dummy B C E (b) Correct Representation DR. Nabil Dmaidi

  5. Retaining Wall Precedence Diagram 20 Footing 2 Wall 2 10 Footing 1 40 Wall 2 Wall 1 30 Wall 1 Footing 2 Footing 1 DR. Nabil Dmaidi

  6. Precedence Diagram -Sequence Stepped and Numbered 10 A 25 E 5 Start 35 Finish 15 D 20 C 30 F 4 1 2 3 DR. Nabil Dmaidi

  7. Constructing the Precedence Diagram 1. Create Activity list and eliminate redundancies. 2. Construct precedence diagram • Activities with no dependency arranged at the left • Create dummy start if you have more than one start “Contract Award” 3. Arrange activities in a sequential order DR. Nabil Dmaidi