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Precedence Diagram. 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. Redundant Linkages. 20 A. 30 B. 30 C. ( a) Incorrect Representation.

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## Precedence Diagram

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

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